CN115528922B - Three-phase resonant converter - Google Patents

Three-phase resonant converter Download PDF

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Publication number
CN115528922B
CN115528922B CN202211506676.9A CN202211506676A CN115528922B CN 115528922 B CN115528922 B CN 115528922B CN 202211506676 A CN202211506676 A CN 202211506676A CN 115528922 B CN115528922 B CN 115528922B
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switch
capacitor
unit
diode
tube
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CN115528922A (en
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乐卫平
刘涛
乐子毅
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Shenzhen CSL Vacuum Science and Technology Co Ltd
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Shenzhen CSL Vacuum Science and Technology Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/4815—Resonant converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The invention relates to a three-phase resonant converter, wherein a first switch group is connected with a second switch group, and the second switch group is connected with a third switch group; when the third switch group is conducted, the first switch group and the second switch group form a first three-phase rectification circuit; when the first switch group is conducted, the second switch group and the third switch group form a three-phase inverter circuit; the resonant network comprises a primary unit and a secondary unit; the primary unit comprises a primary winding, a first capacitor and a second capacitor; the secondary unit comprises a secondary winding, a third capacitor and a fourth capacitor; the three primary units are connected in sequence, the three secondary units are connected in sequence, and the first end of each primary unit is connected with the third switch group. The resonance network has symmetry, and can avoid the second switch tube and the third switch tube to bear larger voltage when the inversion works, thereby reducing the stress of the switch tubes of the second switch group and the third switch group.

Description

Three-phase resonant converter
Technical Field
The invention relates to the technical field of converters, in particular to a three-phase resonant converter.
Background
The resonant converter is a DC-DC converter developed by utilizing a soft switching technology, and the switching tube can be switched on and off under zero voltage by establishing a resonant circuit, so that the resonant converter has the advantages of good isolation performance, low loss, multi-output DC power supply and the like. In a traditional resonant converter, devices in an inverter circuit cannot operate evenly, and voltage stress of a certain device of the inverter circuit is possibly large.
Disclosure of Invention
An object of the present invention is to provide a three-phase resonant converter, thereby overcoming, at least to some extent, one or more of the problems due to the limitations and disadvantages of the related art.
In a first aspect, a three-phase resonant converter is provided, comprising a first switch group, a second switch group, a third switch group and a resonant network;
the first switch group is connected with the second switch group, and the second switch group is connected with the third switch group; when the third switch group is conducted, the first switch group and the second switch group form a first three-phase rectification circuit; when the first switch group is conducted, the second switch group and the third switch group form a three-phase inverter circuit;
the resonant network comprises a primary unit and a secondary unit;
the primary unit comprises a primary winding, a first capacitor and a second capacitor, wherein a first end of the primary winding is connected with a first end of the first capacitor, a second end of the first capacitor is connected with a first end of the second capacitor, and a second end of the second capacitor is connected with a second end of the primary winding; the first end of the primary winding is the first end of the primary unit, and the first end of the second capacitor is the second end of the primary unit;
the secondary unit comprises a secondary winding, a third capacitor and a fourth capacitor, wherein the first end of the secondary winding is connected with the first end of the third capacitor, the second end of the third capacitor is connected with the first end of the fourth capacitor, and the second end of the fourth capacitor is connected with the second end of the secondary winding; the first end of the secondary winding is the first end of the secondary unit, and the first end of the fourth capacitor is the second end of the secondary unit;
the number of the primary units is three, namely a first primary unit, a second primary unit and a third primary unit; the number of the secondary units is three, and the secondary units are respectively a first secondary unit, a second secondary unit and a third secondary unit;
the second end of the first primary unit is connected with the first end of the second primary unit, the second end of the second primary unit is connected with the first end of the third primary unit, and the second end of the third primary unit is connected with the first end of the first primary unit;
the second end of the first secondary unit is connected with the first end of the second secondary unit, the second end of the second secondary unit is connected with the first end of the third secondary unit, and the second end of the third secondary unit is connected with the first end of the first secondary unit;
the first terminal of each primary unit is connected to the third switch group.
Optionally, the first switch group includes three first switch tubes, and first ends of the three first switch tubes are connected; second ends of the three first switching tubes are respectively connected with an A phase, a B phase and a C phase of the three-phase power supply;
the second switch group comprises three second switch tubes, and the first end of each second switch tube is connected with the second end of one first switch tube;
the third switch group comprises three third switch tubes, and the second end of each third switch tube is connected with the second end of one second switch tube; the first ends of the three third switching tubes are connected.
Optionally, the first end of the third switch tube is connected to the first end of the first capacitor, and the second end of the third switch tube is connected to the second end of the third capacitor.
Optionally, the inductor further comprises a first inductor, a second inductor, a third inductor and a fourth inductor;
the first end of the first inductor is connected with the first end of the first primary unit, and the second end of the first inductor is connected with the first end of the second primary unit; the first end of the second inductor is connected with the first end of the second primary unit, and the second end of the second inductor is connected with the first end of the third primary unit; the first end of the third inductor is connected with the first end of the first secondary unit, the second end of the third inductor is connected with the first end of the second secondary unit, the first end of the fourth inductor is connected with the first end of the second secondary unit, and the second end of the fourth inductor is connected with the first end of the third secondary unit.
Optionally, the power supply further comprises a second rectifying circuit, wherein the second rectifying circuit comprises a first diode, a second diode, a third diode, a fourth diode, a fifth diode and a sixth diode;
the anode of the first diode is connected with the cathode of the second diode, the anode of the third diode is connected with the cathode of the fourth diode, and the anode of the fifth diode is connected with the cathode of the sixth diode; the cathode of the first diode, the cathode of the third diode and the cathode of the fifth diode are connected;
the anode of the second diode, the anode of the fourth diode and the anode of the sixth diode are connected;
the anode of the first diode is connected with the first end of the first secondary unit; the anode of the third diode is connected with the first end of the second secondary unit; an anode of the fifth diode is connected to the first terminal of the third secondary unit.
Optionally, the first switch tube is an MOS tube, the first end of the first switch tube is a drain of the MOS tube, the second end of the first switch tube is a source of the MOS tube, and the third end of the first switch tube is a gate of the MOS tube;
the second switch tube is an MOS tube, the first end of the second switch tube is a drain electrode of the MOS tube, the second end of the second switch tube is a source electrode of the MOS tube, and the third end of the second switch tube is a grid electrode of the MOS tube;
the third switching tube is an MOS tube, the first end of the third switching tube is a drain electrode of the MOS tube, the second end of the third switching tube is a source electrode of the MOS tube, and the third end of the third switching tube is a grid electrode of the MOS tube.
Optionally, the method further includes:
the main control unit is used for detecting one or more combinations of the voltage, the current, the voltage phase and the frequency of the output end of the three-phase resonant converter and outputting a control signal according to the detected combination of one or more of the voltage, the current, the voltage phase and the frequency;
the driving unit is used for outputting a first modulation control signal, a second modulation control signal and a third modulation control signal according to the control signal; the first modulation control signal is transmitted to the third end of the first switch tube and controls the on-off of the first switch tube; the second modulation control signal is transmitted to the third end of the second switching tube and controls the on-off of the second switching tube; the third modulation control signal is transmitted to the third end of the third switching tube and controls the on-off of the third switching tube.
Has the advantages that: the three-phase resonant converter provided by the invention has the advantages that the resonant network has symmetry, when the second switch group and the third switch group at the front end of the resonant network form an inverter circuit, three second switch tubes of the second switch group and three third switch tubes of the third switch group can run more evenly, the switch tubes of the second switch group and the third switch group are prevented from bearing larger voltage, and the stress of the switch tubes of the second switch group and the third switch group is reduced. Meanwhile, the voltage stress of the diode in the second rectifying circuit connected to the rear end of the resonant network is also reduced.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
Fig. 1 is a schematic structural diagram of a three-phase resonant converter provided in this embodiment.
Fig. 2 is an equivalent circuit diagram of the three-phase resonant converter provided in this embodiment performing rectification operation.
Fig. 3 is an equivalent circuit diagram of the three-phase resonant converter provided in this embodiment performing an inversion operation.
Reference numerals:
1. a first switch group; 2. a second switch group; 3. a third switch group; 4. a resonant network; 5. second rectification circuit
D1, a first diode; d2, a second diode; d3, a third diode; d4, a fourth diode; d5, a fifth diode; d6, a sixth diode;
s1a, a first switch tube I; s1b, a first switching tube II; s1c, a first switch tube III;
s2a, a second switch tube I; s2b, a second switching tube II; s2c, a second switch tube III;
s3a, a third switching tube I; s3b, a third switching tube II; s3c, a third switch tube III;
l11, a primary winding I; l12, a primary winding II; l13, a primary winding III; l21, a secondary winding I; l22, a secondary winding II; l23, a secondary winding III;
c1a and a first capacitor I; c1b and a first capacitor II; C1C and a first capacitor III;
c2a and a second capacitor I; c2b and a second capacitor II; C2C and a second capacitor III;
c3a and a third capacitor I; c3b and a third capacitor II; C3C and a third capacitor III;
c4a and a fourth capacitor I; c4b and a fourth capacitor II; C4C and a fourth capacitor III;
c5, a fifth capacitor; c6, a sixth capacitor;
l1, a first inductor; l2 and a second inductor; l3, a third inductor; l4, a fourth inductor; l5, fifth inductance
F1, a first fuse; f2, a second fuse;
r1 and a first resistor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1, a three-phase resonant converter is provided, which includes a first switch group 1, a second switch group 2, a third switch group 3, a resonant network 4, a second rectification circuit 5, a main control unit and a driving unit;
the first switch group 1 is connected with the second switch group 2, and the second switch group 2 is connected with the third switch group 3; when the third switch group 3 is conducted, the first switch group 1 and the second switch group 2 form a first three-phase rectification circuit; when the first switch group 1 is conducted, the second switch group 2 and the third switch group 3 form a three-phase inverter circuit; specifically, the method comprises the following steps:
the first switch group 1 comprises three first switch tubes, and the first ends of the three first switch tubes are connected; second ends of the three first switching tubes are respectively connected with an A phase, a B phase and a C phase of the three-phase power supply;
the second switch group 2 comprises three second switch tubes, and the first end of each second switch tube is connected with the second end of one first switch tube;
the third switch group 3 comprises three third switch tubes, and the second end of each third switch tube is connected with the second end of one second switch tube; the first ends of the three third switching tubes are connected.
When all three third switching tubes of the third switching group 3 are conducted, the first switching group 1 and the second switching group 2 form a first three-phase rectification circuit; when all three first switch tubes of the first switch group 1 are conducted, the second switch group 2 and the third switch group 3 form a three-phase inverter circuit.
The resonant network 4 comprises a primary unit and a secondary unit;
the primary unit comprises a primary winding, a first capacitor and a second capacitor, wherein a first end of the primary winding is connected with a first end of the first capacitor, a second end of the first capacitor is connected with a first end of the second capacitor, and a second end of the second capacitor is connected with a second end of the primary winding; the first end of the primary winding is the first end of the primary unit, and the first end of the second capacitor is the second end of the primary unit;
the secondary unit comprises a secondary winding, a third capacitor and a fourth capacitor, wherein the first end of the secondary winding is connected with the first end of the third capacitor, the second end of the third capacitor is connected with the first end of the fourth capacitor, and the second end of the fourth capacitor is connected with the second end of the secondary winding; the first end of the secondary winding is the first end of the secondary unit, and the first end of the fourth capacitor is the second end of the secondary unit;
the number of the primary units is three, namely a first primary unit, a second primary unit and a third primary unit; the number of the secondary units is three, and the secondary units are respectively a first secondary unit, a second secondary unit and a third secondary unit;
the second end of the first primary unit is connected with the first end of the second primary unit, the second end of the second primary unit is connected with the first end of the third primary unit, and the second end of the third primary unit is connected with the first end of the first primary unit;
the second end of the first secondary unit is connected with the first end of the second secondary unit, the second end of the second secondary unit is connected with the first end of the third secondary unit, and the second end of the third secondary unit is connected with the first end of the first secondary unit;
the first terminal of each primary unit is connected to the third switch group 3.
The first end of the sixth capacitor C6 is connected with the first end of the third switching tube, and the second end of the sixth capacitor C6 is connected with the first end of the first switching tube.
The inductor also comprises a first inductor L1, a second inductor L2, a third inductor L3 and a fourth inductor L4;
a first end of the first inductor L1 is connected with a first end of the first primary unit, and a second end of the first inductor L1 is connected with a first end of the second primary unit; a first end of the second inductor L2 is connected with a first end of the second primary unit, and a second end of the second inductor L2 is connected with a first end of the third primary unit; the first end of the third inductor L3 is connected with the first end of the first secondary unit, the second end of the third inductor L3 is connected with the first end of the second secondary unit, the first end of the fourth inductor L4 is connected with the first end of the second secondary unit, and the second end of the fourth inductor L4 is connected with the first end of the third secondary unit.
The second rectifying circuit 5 comprises a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5 and a sixth diode D6;
the anode of the first diode D1 is connected with the cathode of the second diode D2, the anode of the third diode D3 is connected with the cathode of the fourth diode D4, and the anode of the fifth diode D5 is connected with the cathode of the sixth diode D6;
the cathode of the first diode D1, the cathode of the third diode D3 and the cathode of the fifth diode D5 are connected, and the cathode of the fifth diode D5 is the first end of the first rectifying circuit;
the anode of the second diode D2, the anode of the fourth diode D4 and the anode of the sixth diode D6 are connected, and the anode of the sixth diode D6 is the second end of the first rectifying circuit;
the anode of the first diode D1 is connected with the first end of the first secondary unit; the anode of the third diode D3 is connected to the first end of the second secondary unit; an anode of the fifth diode D5 is connected to the first terminal of the third secondary unit.
The first switch tube is an MOS tube, the first end of the first switch tube is a drain electrode of the MOS tube, the second end of the first switch tube is a source electrode of the MOS tube, and the third end of the first switch tube is a grid electrode of the MOS tube;
the second switch tube is an MOS tube, the first end of the second switch tube is a drain electrode of the MOS tube, the second end of the second switch tube is a source electrode of the MOS tube, and the third end of the second switch tube is a grid electrode of the MOS tube;
the third switching tube is an MOS tube, the first end of the third switching tube is a drain electrode of the MOS tube, the second end of the third switching tube is a source electrode of the MOS tube, and the third end of the third switching tube is a grid electrode of the MOS tube.
The main control unit is used for detecting the voltage, the current and the phase and the frequency of the voltage at the output end of the three-phase resonant converter and outputting a control signal according to the detected voltage, current and voltage.
The driving unit is used for outputting a first modulation control signal, a second modulation control signal and a third modulation control signal according to the control signal; the first modulation control signal is transmitted to the third end of the first switch tube and controls the on-off of the first switch tube; the second modulation control signal is transmitted to the third end of the second switch tube and controls the on-off of the second switch tube; the third modulation control signal is transmitted to the third end of the third switching tube and controls the on-off of the third switching tube.
Example 2
A three-phase resonant converter comprises a first switch group 1, a second switch group 2, a third switch group 3, a resonant network 4, a second rectifying circuit 5, a main control unit and a driving unit;
the first switch group 1 comprises three first switch tubes, the types of the first switch tubes are MOS tubes, the first ends of the first switch tubes are drain electrodes of the MOS tubes, the second ends of the first switch tubes are source electrodes of the MOS tubes, and the third ends of the first switch tubes are grid electrodes of the MOS tubes; the three first switching tubes are respectively a first switching tube I S1a, a first switching tube II S1b and a first switching tube III S1c, and the first end of the first switching tube I S1a, the first end of the first switching tube II S1b and the first end of the first switching tube III S1c are connected with each other; the second end of the first switch tube IIS 1a is connected with the U of the three-phase power supply, the second end of the first switch tube IIS 1b is connected with the V of the three-phase power supply, and the second end of the first switch tube IIIS 1c is connected with the W of the three-phase power supply.
The second switch group 2 comprises three second switch tubes, the types of the second switch tubes are MOS tubes, the first ends of the second switch tubes are drain electrodes of the MOS tubes, the second ends of the second switch tubes are source electrodes of the MOS tubes, and the third ends of the second switch tubes are grid electrodes of the MOS tubes; the three second switching tubes are respectively a second switching tube IS 2a, a second switching tube IIS 2b and a second switching tube IIIS 2c; the first end of the second switch tube IS 2a is connected with the second end of the first switch tube IS 1a, the first end of the second switch tube II S2b is connected with the second end of the first switch tube II S1b, and the first end of the second switch tube III S2c is connected with the second end of the first switch tube III S1 c.
The third switch group 3 comprises three third switch tubes, the types of the third switch tubes are MOS tubes, the first ends of the third switch tubes are drains of the MOS tubes, the second ends of the third switch tubes are sources of the MOS tubes, and the third ends of the third switch tubes are grids of the MOS tubes; the three third switching tubes are respectively a third switching tube I S3a, a third switching tube II S3b and a third switching tube III S3c; the first end of a third switching tube I S3a, the first end of a third switching tube II S3b and the first end of a third switching tube III S3c are connected; the second end of the third switching tube IIS 3a is connected with the second end of the second switching tube IIS 2a, the second end of the third switching tube IIS 3b is connected with the second end of the second switching tube IIS 2b, and the second end of the third switching tube IIIS 3c is connected with the second end of the second switching tube IIIS 2 c.
When three third switching tubes of the third switching group 3 are all conducted, the first switching group 1 and the second switching group 2 form a first three-phase rectification circuit; when all three first switch tubes of the first switch group 1 are conducted, the second switch group 2 and the third switch group 3 form a three-phase inverter circuit; the second switch group 2 is a shared switch group, so that the number of switch devices in the three-phase resonant converter can be reduced, and the function of PFC (power factor correction) can be realized; the switching tubes of the first switch group 1, the second switch group 2 and the third switch group 3 are all controllable rectifying devices, so that the influence of harmonic waves of a three-phase power supply is effectively reduced, and the influence of harmonic waves at the input side of the three-phase resonant converter is reduced;
the three-phase resonant converter further comprises a sixth capacitor C6, a first fuse F1 and a second fuse F2; the first end of the first fuse F1 is connected with the first end of the first switching tube IS 1a, the second end of the first fuse F1 is connected with the second end of the sixth capacitor C6, the first end of the sixth capacitor C6 is connected with the first end of the second fuse F2, and the first end of the second fuse F2 is connected with the first end of the third switching tube IS 3 a; the first fuse F1 and the second fuse F2 are used for protecting a circuit of the three-phase resonant converter and improving the operation stability of the three-phase resonant converter; and a sixth capacitor C6 is arranged, and when all three first switching tubes of the first switching group 1 are switched on, the normal operation of inversion operation is ensured.
The resonant network 4 comprises three primary units and three secondary units; the three primary units have the same structure and are respectively a first primary unit, a second primary unit and a third primary unit; the three secondary units have the same structure and are respectively a first secondary unit, a second secondary unit and a third secondary unit.
The first primary unit comprises a primary winding IL 11, a first capacitor IC 1a and a second capacitor IC 2a, wherein a first end of the primary winding IL 11 is connected with a first end of the first capacitor IC 1a, a second end of the first capacitor IC 1a is connected with a first end of the second capacitor IC 2a, and a second end of the second capacitor IC 2a is connected with a second end of the primary winding IL 11; the first end of the primary winding il 11 is the first end of the first primary unit, and the first end of the second capacitor ic 2a is the second end of the first primary unit.
The second primary unit comprises a primary winding IIL 12, a first capacitor IIC 1b and a second capacitor IIC 2b, wherein the first end of the primary winding IIL 12 is connected with the first end of the first capacitor IIC 1b, the second end of the first capacitor IIC 1b is connected with the first end of the second capacitor IIC 2b, and the second end of the second capacitor IIC 2b is connected with the second end of the primary winding IIL 12; the first end of the primary winding IIL 12 is a first end of the second primary unit, and the first end of the second capacitor IIC 2b is a second end of the second primary unit; the first end of the second primary unit is connected to the second end of the first primary unit.
The third primary unit comprises a primary winding IIIL 13, a first capacitor IIIC 1C and a second capacitor IIIC 2C, wherein a first end of the primary winding IIIL 13 is connected with a first end of the first capacitor IIIC 1C, a second end of the first capacitor IIIC 1C is connected with a first end of the second capacitor IIIC 2C, and a second end of the second capacitor IIIC 2C is connected with a second end of the primary winding IIIL 13; the first end of the primary winding III L13 is the first end of the third primary unit, and the first end of the second capacitor III C2C is the second end of the third primary unit; the first end of the third primary unit is connected to the second end of the second primary unit and the second end of the third primary unit is connected to the first end of the first primary unit.
The first secondary unit comprises a secondary winding IL 21, a third capacitor IC 3a and a fourth capacitor IC 4a; a first end of the secondary winding IL 21 is connected with a first end of a third capacitor IC 3a, a second end of the third capacitor IC 3a is connected with a first end of a fourth capacitor IC 4a, and a second end of the fourth capacitor IC 4aC4a is connected with a second end of the secondary winding IL 21L 21; the first end of the secondary winding il 21 is the first end of the first secondary unit, the first end of the fourth capacitor ic 4a is the second end of the first secondary unit, and the secondary winding il 21 is coupled to the primary winding il 11.
The second secondary unit comprises a secondary winding IIL 22, a third capacitor IIC 3b and a fourth capacitor IIC 4b; a first end of the secondary winding IIL 22 is connected with a first end of a third capacitor IIC 3b, a second end of the third capacitor IIC 3b is connected with a first end of a fourth capacitor IIC 4b, and a second end of the fourth capacitor IIC 4b is connected with a second end of the secondary winding IIL 22; the first end of the secondary winding IIL 22 is the first end of the second secondary unit, and the first end of the fourth capacitor IIC 4b is the second end of the second secondary unit; the first end of the second secondary unit is connected with the second end of the first secondary unit; the secondary winding il 22 is coupled to the primary winding il 12.
The third secondary unit comprises a secondary winding IIIL 23, a third capacitor IIIC 3C and a fourth capacitor IIIC 4C; the first end of the secondary winding III L23 is connected with the first end of a third capacitor IIIC 3C, the second end of the third capacitor IIIC 3C is connected with the first end of a fourth capacitor IIIC 4C, and the second end of the fourth capacitor IIIC 4C is connected with the second end of the secondary winding III L23; a first end of the secondary winding III L23 is a first end of the third secondary unit, and a first end of the fourth capacitor IIIC 4C is a second end of the third secondary unit; the first end of the third secondary unit is connected with the second end of the second secondary unit, and the second end of the third secondary unit is connected with the first end of the first secondary unit; the secondary winding ill L23 is coupled to the primary winding ill L13.
The resonant network 4 is a bidirectional LCC-L resonant circuit, and the circuit structure of the resonant network has perfect symmetry, so that when inversion transmission is carried out, the switching devices of the inverter circuit can operate averagely, and the voltage stress of the switching tubes in the inverter circuit is reduced.
In order to prevent the first capacitor of the resonant network 4 from being short-circuited when all three third switching tubes of the third switching group 3 are turned on, a first inductor L1 and a second inductor L2 are further provided, a first end of the first inductor L1 is connected with a first end of the first primary unit, a second end of the first inductor L1 is connected with a first end of the second primary unit, a first end of the second inductor L2 is connected with a first end of the second primary unit, and a second end of the second inductor L2 is connected with a first end of the third primary unit; in order to ensure the symmetry of the resonant network 4, a third inductor L3 and a fourth inductor L4 are further provided, a first end of the third inductor L3 is connected to the first end of the first secondary winding, a second end of the third inductor L3 is connected to the first end of the second secondary winding, a first end of the fourth inductor L4 is connected to the first end of the second secondary unit, and a second end of the fourth inductor L4 is connected to the first end of the third secondary unit.
The second rectifying circuit 5 comprises a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5 and a sixth diode D6;
the anode of the first diode D1 is connected with the cathode of the second diode D2, the anode of the third diode D3 is connected with the cathode of the fourth diode D4, and the anode of the fifth diode D5 is connected with the cathode of the sixth diode D6; the cathode of the first diode D1, the cathode of the third diode D3 and the cathode of the fifth diode D5 are connected, and the cathode of the fifth diode D5 is the first end of the first rectifying circuit; the anode of the second diode D2, the anode of the fourth diode D4 and the anode of the sixth diode D6 are connected, and the anode of the sixth diode D6 is the second end of the first rectifying circuit. The anode of the first diode D1 is connected with the first end of the first secondary unit; the anode of the third diode D3 is connected to the first end of the second secondary unit; an anode of the fifth diode D5 is connected to the first terminal of the third secondary unit.
The three-phase resonant converter further comprises a fifth inductor L5, a fifth capacitor C5 and a first resistor R1; a first end of the fifth inductor L5 is connected to a cathode of the fifth diode D5, a second end of the fifth inductor L5 is one terminal of an output end of the three-phase resonant converter, and the fifth capacitor C5 is connected in parallel to two ends of the fifth inductor L5; a first end of the first resistor R1 is connected to an anode of the sixth diode D6, a second end of the first resistor R1 is another terminal of the output end of the three-phase resonant converter, that is, a second end of the fifth inductor L5 and a second end of the first resistor R1 form the output end of the three-phase resonant converter, and the output end of the three-phase resonant converter outputs direct current.
The main control unit comprises a sampling module, the sampling module is used for detecting one or more combinations of the voltage, the current, the voltage phase and the frequency of the output end of the three-phase resonant converter, and the main control unit outputs a control signal according to the one or more combinations of the voltage, the current, the voltage phase and the frequency detected by the sampling module;
the driving unit is used for outputting a first modulation control signal, a second modulation control signal and a third modulation control signal according to the control signal.
The first modulation control signal comprises a first modulation control signal I, a first modulation control signal II and a first modulation control signal III, the first modulation control signal I is transmitted to the third end of the first switch tube IIS 1a, the first modulation control signal II is transmitted to the third end of the first switch tube IIS 1b, and the first modulation control signal III is transmitted to the third end of the first switch tube IIIS 1 c;
the second modulation control signal comprises a second modulation control signal I, a second modulation control signal II and a second modulation control signal III, the second modulation control signal I is transmitted to a third end of the second switching tube IIS 2a, the second modulation control signal II is transmitted to a third end of the second switching tube IIS 2b, and the second modulation control signal III is transmitted to a third end of the second switching tube IIIS 2c;
the third modulation control signal comprises a third modulation control signal I, a third modulation control signal II and a third modulation control signal III, the third modulation control signal I is transmitted to a third end of a third switching tube IS 3a, the third modulation control signal II is transmitted to a third end of a third switching tube IIS 3b, and the third modulation control signal III is transmitted to a third end of a third switching tube IIIS 3c;
as shown in fig. 2, the third modulation control signal controls all three third switching tubes to be turned on, so as to ensure that the second ends of the three second switching tubes of the second switching group 2 are at the same potential, thereby ensuring the normal operation of the rectification; the three first switch tubes are controlled to be sequentially switched on and off through the first modulation control signal, and the three second switch tubes are controlled to be sequentially switched on and off through the second modulation control signal, so that the resonant converter performs rectification work;
as shown in fig. 3, the first modulation control signal controls the three first switching tubes to be turned on completely, so as to ensure that the first ends of the three second switching tubes of the second switching group 2 are at the same potential, so as to ensure the normal operation of the inversion operation, the second modulation control signal controls the three second switching tubes to be turned on and off in sequence, and the third modulation control signal controls the three third switching tubes to be turned on and off in sequence, so that the resonant converter performs the inversion operation.
The driving unit can adjust the work of each switch of the first rectification circuit and the inversion circuit according to the control signal, can adjust the frequency modulation of the inversion circuit on direct current, dynamically adjust required frequency and improve control precision. In the three-phase resonant converter provided in this embodiment, the symmetry of the resonant network 4 represents the repeated etching of the energy waveform or the shape-equality amplification, that is, the parameter for waveform transfer is controllable, that is, when the second switch group 2 and the third switch group 3 at the front end of the resonant network 4 form an inverter circuit, the three second switch tubes of the second switch group 2 and the three third switch tubes of the third switch group 3 can operate more evenly, so as to avoid that the voltage borne by the switch tubes of the second switch group 2 and the third switch group 3 is larger, thereby reducing the stress of the switch tubes of the second switch group 2 and the third switch group 3. At the same time, the voltage stress of the diodes in the second rectification circuit 5 connected at the rear end of the resonant network 4 is also reduced.
In this embodiment, the second switch group 2 is a common switch tube of the three-phase inverter circuit and the first three-phase rectifier circuit, and three third switch tubes of the third switch group 3 are all communicated when the resonant converter performs rectification operation, and at this time, the voltage stress of the third switch tubes is minimum, because no voltage across exists in the third switch tubes at this time; similarly, when the resonant converter performs inversion operation, all the three first switching tubes of the first switching group 1 are connected, and the voltage stress of the first switching tubes is minimum at the moment because no voltage is applied to the first switching tubes at the moment; the first switching tube and the third switching tube are alternately conducted along with the rectification and inversion work of the resonant converter, and a non-bearing voltage stress window exists, so that the voltage stress of the first switching tube and the second switching tube is small. The voltage stress of the second switch tubes can be adjusted by controlling the duty ratios of the three second switch tubes in the inversion working process, the three second switch tubes are sequentially conducted, and the three second switch tubes have time periods without bearing pressure, so that the voltage stress of the three second switch tubes can be reduced, but the three second switch tubes participate in rectification work and inversion work, and the symmetrical resonant network 4 can further reduce the voltage stress of the three second switch tubes.
In addition, the three-phase resonant converter provided by the embodiment has the advantages of easy expandability, high circuit compatibility and easy combination with an automatic circuit control means.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.

Claims (5)

1. A three-phase resonant converter is characterized by comprising a first switch group (1), a second switch group (2), a third switch group (3) and a resonant network (4);
the first switch group (1) is connected with the second switch group (2), and the second switch group (2) is connected with the third switch group (3); when the third switch group (3) is conducted, the first switch group (1) and the second switch group (2) form a first three-phase rectification circuit; when the first switch group (1) is conducted, the second switch group (2) and the third switch group (3) form a three-phase inverter circuit;
the resonant network (4) comprises a primary unit and a secondary unit;
the primary unit comprises a primary winding, a first capacitor and a second capacitor, wherein a first end of the primary winding is connected with a first end of the first capacitor, a second end of the first capacitor is connected with a first end of the second capacitor, and a second end of the second capacitor is connected with a second end of the primary winding; the first end of the primary winding is the first end of the primary unit, and the first end of the second capacitor is the second end of the primary unit;
the secondary unit comprises a secondary winding, a third capacitor and a fourth capacitor, wherein the first end of the secondary winding is connected with the first end of the third capacitor, the second end of the third capacitor is connected with the first end of the fourth capacitor, and the second end of the fourth capacitor is connected with the second end of the secondary winding; the first end of the secondary winding is the first end of the secondary unit, and the first end of the fourth capacitor is the second end of the secondary unit;
the number of the primary units is three, namely a first primary unit, a second primary unit and a third primary unit; the number of the secondary units is three, and the secondary units are respectively a first secondary unit, a second secondary unit and a third secondary unit;
the second end of the first primary unit is connected with the first end of the second primary unit, the second end of the second primary unit is connected with the first end of the third primary unit, and the second end of the third primary unit is connected with the first end of the first primary unit;
the second end of the first secondary unit is connected with the first end of the second secondary unit, the second end of the second secondary unit is connected with the first end of the third secondary unit, and the second end of the third secondary unit is connected with the first end of the first secondary unit;
the first end of each primary unit is connected with the third switch group (3);
the first switch group (1) comprises three first switch tubes, and the first ends of the three first switch tubes are connected; second ends of the three first switching tubes are respectively connected with an A phase, a B phase and a C phase of the three-phase power supply;
the second switch group (2) comprises three second switch tubes, and the first end of each second switch tube is connected with the second end of one first switch tube;
the third switch group (3) comprises three third switch tubes, and the second end of each third switch tube is connected with the second end of one second switch tube; the first ends of the three third switching tubes are connected;
the first end of the sixth capacitor (C6) is connected with the first end of the third switching tube, and the second end of the sixth capacitor (C6) is connected with the first end of the first switching tube.
2. A three-phase resonant converter according to claim 1, characterized in that it further comprises a first inductance (L1), a second inductance (L2), a third inductance (L3) and a fourth inductance (L4);
a first end of the first inductor (L1) is connected with a first end of the first primary unit, and a second end of the first inductor (L1) is connected with a first end of the second primary unit; a first end of the second inductor (L2) is connected with a first end of the second primary unit, and a second end of the second inductor (L2) is connected with a first end of the third primary unit; the first end of the third inductor (L3) is connected with the first end of the first secondary unit, the second end of the third inductor (L3) is connected with the first end of the second secondary unit, the first end of the fourth inductor (L4) is connected with the first end of the second secondary unit, and the second end of the fourth inductor (L4) is connected with the first end of the third secondary unit.
3. A three-phase resonant converter according to claim 2, characterized by further comprising a second rectifying circuit (5), the second rectifying circuit (5) comprising a first diode (D1), a second diode (D2), a third diode (D3), a fourth diode (D4), a fifth diode (D5) and a sixth diode (D6);
the anode of the first diode (D1) is connected with the cathode of the second diode (D2), the anode of the third diode (D3) is connected with the cathode of the fourth diode (D4), and the anode of the fifth diode (D5) is connected with the cathode of the sixth diode (D6); the cathode of the first diode (D1), the cathode of the third diode (D3) and the cathode of the fifth diode (D5) are connected;
the anode of the second diode (D2), the anode of the fourth diode (D4) and the anode of the sixth diode (D6) are connected;
the anode of the first diode (D1) is connected with the first end of the first secondary unit; the anode of the third diode (D3) is connected with the first end of the second secondary unit; an anode of the fifth diode (D5) is connected to the first terminal of the third secondary unit.
4. A three-phase resonant converter according to any of claims 1 to 3, wherein the first switching tube is a MOS tube, the first end of the first switching tube is a drain electrode of the MOS tube, the second end of the first switching tube is a source electrode of the MOS tube, and the third end of the first switching tube is a gate electrode of the MOS tube;
the second switch tube is an MOS tube, the first end of the second switch tube is a drain electrode of the MOS tube, the second end of the second switch tube is a source electrode of the MOS tube, and the third end of the second switch tube is a grid electrode of the MOS tube;
the third switching tube is an MOS tube, the first end of the third switching tube is a drain electrode of the MOS tube, the second end of the third switching tube is a source electrode of the MOS tube, and the third end of the third switching tube is a grid electrode of the MOS tube.
5. A three-phase resonant converter according to any of claims 1 to 3, further comprising:
the main control unit is used for detecting one or more combinations of the voltage, the current, the voltage phase and the frequency of the output end of the three-phase resonant converter and outputting a control signal according to the detected combination of one or more of the voltage, the current, the voltage phase and the frequency;
the driving unit is used for outputting a first modulation control signal, a second modulation control signal and a third modulation control signal according to the control signal; the first modulation control signal is transmitted to the third end of the first switch tube and controls the on-off of the first switch tube; the second modulation control signal is transmitted to the third end of the second switch tube and controls the on-off of the second switch tube; the third modulation control signal is transmitted to the third end of the third switching tube and controls the on-off of the third switching tube.
CN202211506676.9A 2022-11-29 2022-11-29 Three-phase resonant converter Active CN115528922B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561595A (en) * 1995-03-24 1996-10-01 Magl Power Inc. Power inverter with input line conditioning
CN103683964A (en) * 2013-12-20 2014-03-26 华为技术有限公司 Resonant bidirectional transducer, uninterruptible power supply device and control method
CN108631605A (en) * 2018-08-03 2018-10-09 三峡大学 A kind of three level isolated form DC/DC converters of adjustable large capacity height boosting of bridge arm number
CN108988676A (en) * 2018-09-19 2018-12-11 南京航空航天大学 A kind of single stage type isolation type bidirectional AC-DC converter
CN111164872A (en) * 2018-01-23 2020-05-15 华为技术有限公司 Power converter
JP2021175306A (en) * 2020-04-28 2021-11-01 Tdk株式会社 Switching power supply device and power supply system
CN114070083A (en) * 2021-10-13 2022-02-18 华为技术有限公司 DC/DC converter and output voltage control method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115189587B (en) * 2022-09-07 2022-12-13 深圳市恒运昌真空技术有限公司 Three-phase resonant rectifier and control method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5561595A (en) * 1995-03-24 1996-10-01 Magl Power Inc. Power inverter with input line conditioning
CN103683964A (en) * 2013-12-20 2014-03-26 华为技术有限公司 Resonant bidirectional transducer, uninterruptible power supply device and control method
CN111164872A (en) * 2018-01-23 2020-05-15 华为技术有限公司 Power converter
CN108631605A (en) * 2018-08-03 2018-10-09 三峡大学 A kind of three level isolated form DC/DC converters of adjustable large capacity height boosting of bridge arm number
CN108988676A (en) * 2018-09-19 2018-12-11 南京航空航天大学 A kind of single stage type isolation type bidirectional AC-DC converter
JP2021175306A (en) * 2020-04-28 2021-11-01 Tdk株式会社 Switching power supply device and power supply system
CN114070083A (en) * 2021-10-13 2022-02-18 华为技术有限公司 DC/DC converter and output voltage control method thereof

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