CN111464035A - Non-contact voltage regulating circuit and voltage regulating method of high-voltage isolation type medical power supply - Google Patents
Non-contact voltage regulating circuit and voltage regulating method of high-voltage isolation type medical power supply Download PDFInfo
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- CN111464035A CN111464035A CN202010349188.6A CN202010349188A CN111464035A CN 111464035 A CN111464035 A CN 111464035A CN 202010349188 A CN202010349188 A CN 202010349188A CN 111464035 A CN111464035 A CN 111464035A
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
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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
- 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
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to the technical field of voltage regulation, and particularly discloses a non-contact voltage regulation circuit of a high-voltage isolation type medical power supply, which comprises a direct-current side power supply, a direct-current capacitor, an LL C resonant converter, a main transformer, a secondary side rectifier bridge, a secondary side bus capacitor and a secondary side medical power supply, wherein the direct-current capacitor is connected with the direct-current side power supply in parallel, the direct-current side power supply, the direct-current capacitor and the LL C resonant converter are positioned on the primary side of the main transformer, the direct-current output negative electrode of the rectifier bridge is respectively coupled with the secondary side bus capacitor and the secondary side medical power supply, the direct-current output positive electrode of the rectifier bridge is respectively coupled with the secondary side bus capacitor and the secondary side medical power supply, and the secondary side rectifier bridge, the secondary side bus capacitor and the secondary side medical power supply are positioned on the secondary side of the main transformer.
Description
Technical Field
The invention belongs to the technical field of non-contact power supply and voltage regulation of a high-voltage isolated power supply, and particularly relates to a circuit of a high-voltage isolated power supply capable of supplying power and regulating voltage for medical use, which is limited in structure or volume.
Background
Non-isolated circuit: a circuit without a transformer.
In the field of medical power supplies, the power supply voltage may be conventional mains supply voltage, the voltage may also be low when a load is used, but the primary side and the secondary side have strong insulating capacity, and the primary side is changed into a magnetic signal from an electric signal and the secondary side is changed into an electric signal from a magnetic signal by a common transformer, so that the insulating property is ensured. In this process, however, feedback and control between the primary and secondary sides is particularly important.
Referring to fig. 1, a circuit of a medical power supply having both high-voltage isolation requirements and power supply, voltage regulation and stabilization requirements in the prior art is shown in fig. 1, and the medical power supply includes an isolated medical power supply topology and a secondary side voltage sampling element, a secondary side auxiliary power supply and a high-voltage linear optical coupler, and a primary side controller collects a secondary side voltage signal returned by the optical coupler to complete a closed loop. During voltage regulation, the control part is arranged on the primary side, and the secondary side voltage communicates the information to the primary side in an analog signal mode through the linear optocoupler. Namely, the voltage regulation is realized through a communication method.
The above prior art solutions have the following drawbacks:
1. the medical power supply can realize power supply voltage regulation and voltage stabilization, but a high-voltage linear optical coupler is required to be added outside a main transformer to realize the transmission of power supply voltage regulation signals, and the high-voltage linear optical coupler also needs high insulation. When the insulativity of the high-voltage linear optocoupler is insufficient, the power supply can damage the primary side controller by breaking down the optocoupler, and finally the whole power supply system is damaged;
2. with the rise of the voltage level, the cost of the high-voltage linear optocoupler is more and more expensive, and the temperature characteristic of the linear optocoupler is poorer, so that the finally obtained output voltage deviates from a preset value;
3. the high-voltage linear optocoupler generally increases the volume along with the increase of the voltage grade, so that the power density of the medical power supply is reduced, and the miniaturization is not facilitated;
4. the adoption of the linear optocoupler can lead the position of the original secondary side structure to be relatively fixed, and the whole power supply cannot rotate relatively and cannot be applied to equipment (such as a CT (computed tomography) machine) with an output side positioned on a rotating machine.
Disclosure of Invention
In view of the defects in the prior art, it is an object of the present invention to provide a non-contact voltage regulating circuit for a high-voltage isolated power supply.
The above object of the present invention is achieved by the following technical solutions:
a non-contact voltage regulating circuit of a high-voltage isolation type medical power supply comprises a direct-current side power supply, a direct-current capacitor, an LL C resonant converter, a main transformer, a secondary side rectifier bridge, a secondary side bus capacitor and a secondary side medical power supply, wherein the direct-current capacitor is connected with the direct-current side power supply in parallel, the direct-current side power supply, the direct-current capacitor and the LL C resonant converter are located on the primary side of the main transformer, the direct-current output negative electrode of the rectifier bridge is respectively coupled with the secondary side bus capacitor and the secondary side medical power supply, the direct-current output positive electrode of the rectifier bridge is respectively coupled with the secondary side bus capacitor and the secondary side medical power supply, and the secondary side rectifier bridge, the secondary side bus capacitor and the secondary side medical power supply are located on the secondary side of the.
The secondary medical power supply in fig. 2 is exemplified by a Buck circuit, and is exemplified by a switching tube Q3, a freewheeling diode D1, a filter inductor L, an output filter capacitor C1o, an output load R1o, a frequency-voltage converter, a secondary signal processor, and a medical power supply controller in fig. 2 by a Buck controller, so the whole circuit includes a dc-side power supply Ui, a dc capacitor Ci connected in parallel with the dc-side power supply, a LL C resonant converter topology composed of a full bridge or a half bridge, a LL C controller, a primary signal processor, a main transformer T1, a secondary rectifier bridge B1, a secondary bus capacitor C1, and a Buck circuit.
The primary side comprises a control module and a processing module, the secondary side comprises a frequency-voltage converter, a processor and a controller, the primary side control module is an LL C controller, the primary side processing module is a primary side processor, the LL C controller controls a LL C resonant converter, the primary side processor is in signal transmission with the LL C controller, the frequency-voltage converter is in signal transmission with the processor, and the processor is in signal transmission with the controller.
The secondary medical power supply is a non-isolated circuit. The non-isolated circuit is a Buck circuit.
The functions of the LL C controller and the Buck controller can be realized by the existing integrated circuit (analog chip), the existing integrated circuit can be directly used, a buffer can be added between the processor and the controller, and a power supply can be added into the controller.
Preferably, the LL C controller can be UCC25600 and UCC25630x series, and can realize the LL C frequency control function of the invention;
preferably, the Buck controller can be TPS40200 and the like, and can realize output according to the duty ratio of a given control switch tube.
Another object of the present invention is achieved by the following arrangement.
A non-contact power supply voltage regulation method of a high-voltage isolation type medical power supply comprises the following steps:
(1) a primary side input voltage adjusting signal;
(2) the primary side processor processes a voltage adjusting signal to obtain an adjusting frequency fa;
(3) the secondary side frequency-voltage converter collects working frequency fa and converts the working frequency fa into a voltage signal Va;
(4) the secondary side controller collects a voltage signal Va, corresponds to an output voltage to be regulated and transmits a voltage reference signal to the switching power supply controller;
(5) the switching power supply controller realizes voltage regulation and voltage stabilization.
When the circuit needs to supply and regulate voltage, the primary side obtains the voltage needing to be regulated and the corresponding regulating frequency f obtained by calculating the voltage through the primary side processoraThe secondary side frequency voltage converter always keeps working state, converts the working frequency of the first stage isolation circuit into corresponding voltage, and the secondary side controller continuously samples the voltage to judge whether the voltage enters the threshold range of power supply voltage regulation or notAfter the voltage is adjusted, calculating what voltage reference signal needs to be output by the voltage to be adjusted to the secondary medical power supply controller, so that the secondary medical power supply controller realizes power supply and voltage regulation; when the working frequency returns to the resonant frequency, the output voltage of the frequency-voltage converter falls outside the range of the power supply voltage regulation threshold, and the secondary side processor keeps the previous voltage reference signal output, so that the final output voltage stabilization is ensured.
The primary first-stage controller adopts a fixed-frequency control mode when power supply and voltage regulation are not needed, and works at a relatively low working frequency fwWhen the voltage needs to be adjusted, the voltage adjusting signal is input, and after the primary side signal processor receives the signal, the working frequency f needed to be adjusted is calculatedaAnd the operating frequency of the circuit is adjusted to f by the LL C controllera(ii) a The secondary side frequency voltage converter always keeps tracking the working frequency and converts the working frequency into corresponding output voltage VaThe secondary side signal processor samples the output voltage V of the frequency-voltage converteraThen, the voltage value is judged to be regulated with the unpowered power supply, namely, the voltage is regulated by fwVoltage V during normal operationwIf the situation is that power supply and voltage regulation are needed, a new voltage reference value is given to the secondary medical power supply controller, and power supply and voltage regulation and voltage stabilization are realized by the medical power supply controller. When the voltage V collected by the secondary side processoraIs approximately VwIn the process, the output voltage is not required to be adjusted, so that the reference voltage delivered to the secondary medical power supply controller is kept unchanged.
Through the technical scheme, complete isolation is realized between the original secondary side, and optical couplers or optical fibers are not needed for carrying out original secondary side signal transmission. It is realized that the control of the primary side is the control of the primary side and the control of the secondary side is the control of the secondary side.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the power supply voltage regulating circuit provided by the invention has a simple structure, can realize the transmission of power supply voltage regulating signals without any structures such as communication devices outside a main transformer, and has low requirements on input voltage ripples of a primary input power supply;
2. the voltage stability of the secondary side is ensured through the design of the two-stage circuit, and the stability of the output voltage can be realized under the condition that the input voltage of the primary side is changed;
3. because only a transformer exists between the original secondary sides, the relative rotation of the original secondary sides can be realized.
4. The device works at a resonance frequency point during normal work and has strong loading capacity;
5. only one dimension width of the transformer can be reserved between the two isolated parts, so that the power density is improved; and the two parts are isolated from each other, so that relative movement at a certain angle can be realized.
6. Saving cost, saving volume and improving power density.
Description of the drawings:
fig. 1 is a conventional high-voltage isolated medical power supply;
FIG. 2 is a detailed circuit diagram of an embodiment of the present invention;
FIG. 3 is a diagram of the effects of a circuit implementation;
FIG. 4 is a flow chart of a power supply voltage regulation method according to an embodiment of the present invention;
FIG. 5 is a frequency-voltage mapping chart according to an embodiment of the present invention;
FIG. 6 is a control block diagram of the secondary side voltage regulator circuit of FIG. 2 of the present invention.
Wherein, Ui: DC side power supply, CiA direct current capacitor, T1 a main transformer, C1 a bus capacitor, Q1 a switching tube, Q2 a switching tube, Q3 a switching tube, D1 a freewheeling diode, B1 a secondary side rectifier bridge, L1 a filter inductor, C1o an output filter capacitor, R1o an output load, fa: normal operating frequency, fw: real-time operating frequency, Va: outputting the voltage; vw: real-time voltage.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. A non-contact voltage regulation circuit of a high-voltage isolation type medical power supply comprises a primary side power supply, a primary side processor and controller, a resonant isolation converter, a secondary side processor and controller and a secondary voltage regulation circuit.
The primary side power supply is used for providing power for the main circuit and the control circuit integrally;
the primary side processor is mainly used for processing the voltage regulating signal, converting the voltage regulating signal into a control signal and transmitting the control signal to the primary side controller;
the primary side controller generates a transistor gate control signal and drives a primary side transistor of the resonant type isolation converter through the driving circuit;
the resonant isolation converter performs primary and secondary high-voltage isolation work and simultaneously serves as a frequency signal transmission medium;
the secondary side processor part comprises a frequency-voltage converter and a digital processor, the frequency-voltage converter converts a frequency signal into a voltage signal, the digital processor acquires the voltage signal through an A/D converter so as to obtain an output voltage required to be adjusted, and converts the voltage required to be output finally into a control signal of the secondary side controller and transmits the control signal to the secondary side controller;
the secondary side controller receives a control signal transmitted by the secondary side processor, and outputs required voltage by controlling the secondary side secondary voltage regulating circuit to finish primary side-to-secondary side non-optical coupling isolation voltage regulation.
Referring to fig. 2, a half-bridge LL C is selected as a resonant isolated converter and a Buck circuit is selected as a secondary voltage regulating circuit, and the invention is sequentially taken as an example to explain a non-contact voltage regulating circuit of a high-voltage isolated power supply, which comprises a direct-current side power supply (U-side power supply)i) A DC capacitor C connected in parallel with the DC side power supplyiThe power supply comprises half-bridge switching tubes Q1 and Q2, a resonant capacitor Cr, an excitation inductor L m, a resonant inductor L R and a LL C controller, a primary side signal processor, a main transformer T1, a secondary side rectifier bridge B1, a secondary side bus capacitor C1 and a secondary side medical power supply, wherein a Buck circuit is taken as an example in the figure 2, the secondary side medical power supply comprises a switching tube Q3, a freewheeling diode D1, a filter inductor L1, an output filter capacitor C1o and an output load R1o, and a frequency-voltage converter, a secondary side signal processor and a medical power supply controller are taken as examples in the figure 2.
As an embodiment of the present invention, the primary side power supply is Ui and the bus capacitor Ci connected in parallel thereto, and the primary side processor may adopt any multi-IO digital processor, receive the voltage control signal that the final secondary side needs to output through a communication protocol such as 485, and convert the voltage control signal into a corresponding frequency control signal and transmit the corresponding frequency control signal to the primary side LL C controller.
The half-bridge LL C resonant circuit consists of switching tubes Q1, Q2, a resonant capacitor Cr, a resonant inductor L r, a main transformer (comprising an ideal transformer T1 and an excitation inductor L m) and a full-bridge rectifying circuit B1 on the secondary side, the drain of the MOSFET Q1 is connected with the positive electrode of a power supply, the source of the MOSFET Q1 is connected with the drain of the MOSFET Q2, the source of the MOSFET Q2 is connected with the negative electrode of the power supply, the source of the Q1 and the drain of the Q2 are simultaneously connected with the positive electrode (ceramic capacitor and film capacitor do not have positive and negative electrodes, only the final capacitor voltage mean value is half of the input voltage if the positive and negative electrodes are selected according to the result, the negative electrode of the resonant capacitor Cr is connected with the same-name end of the main transformer (namely, the same-name end of the ideal transformer T1 and one end of the excitation inductor L m are simultaneously connected).
The AC input side of the full-bridge rectifier B1 is connected with two terminals of the secondary side of the transformer, the rectification output side is connected with a secondary side bus capacitor C1, the secondary side Buck circuit takes C1 as input C1o as output, and R1o as load, so that secondary voltage regulation and stabilization output is realized.
The 3-dimensional graph after the whole circuit is completed can be as shown in fig. 3, the original secondary side circuit is respectively positioned on the two PCB boards, and the transformer adopts a pot-shaped iron core, so that the relative rotation of the original secondary side can be realized. In fig. 3, the dashed lines indicate the relative rotation axes, the arrow directions indicate the rotation directions, and other specific components are not shown in fig. 3.
The whole control block diagram is shown in figure 4. during starting, the primary side LL C resonant circuit can be in soft starting by adopting a duty ratio regulation mode, and when the secondary side voltage does not need to be regulated, the primary side circuit is controlled by the LL C controller to work at a resonant frequency point fwWhen the power supply is needed to be regulated, the voltage gain of the LL C resonant circuit is not sensitive to the frequency change higher than the resonant frequency, and the voltage gain is set in a certain frequency range from the resonant frequency pointAfter the circuit returns to the normal working frequency, the voltage information acquired by the secondary processor is lower than the power supply voltage regulation threshold, so that the previous output voltage reference is maintained, a corresponding relation graph of the normal working frequency, the power supply voltage regulation threshold and the output voltage expected to be acquired correspondingly can be shown in fig. 5.
The medical power supply controller needs to acquire output voltage and input given voltage at the same time to complete closed loop, and a simplified control block diagram of the whole circuit can be shown in fig. 6.
Based on the embodiment, the invention has simple structure, can finish the adjustment of the secondary side voltage without a communication device, and has low requirement on the input voltage ripple of the primary side input power supply; the device works at a resonance frequency point during normal work and has strong loading capacity; the width of only one dimension of the transformer can be reserved between the two isolated parts, and the improvement of power density is facilitated.
The implementation principle of the embodiment is as follows: the primary side and the secondary side are completely isolated, optical couplers or optical fibers are not needed for carrying out primary side and secondary side signal transmission, and primary side and secondary side separate control is realized.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (7)
1. A non-contact voltage regulating circuit of a high-voltage isolation type medical power supply is characterized by comprising a direct-current side power supply, a direct-current capacitor, an LL C resonant converter, a main transformer, a secondary side rectifier bridge, a secondary side bus capacitor and a secondary side medical power supply, wherein the direct-current capacitor is connected with the direct-current side power supply in parallel, the direct-current side power supply, the direct-current capacitor and the LL C resonant converter are located on the primary side of the main transformer, the direct-current output negative electrode of the rectifier bridge is respectively coupled with the secondary side bus capacitor and the secondary side medical power supply, the direct-current output positive electrode of the rectifier bridge is respectively coupled with the secondary side bus capacitor and the secondary side medical power supply, and the secondary side rectifier bridge, the secondary side bus capacitor and the secondary side medical power supply are located on the secondary side of the main transformer.
2. The non-contact voltage regulation method of a high voltage isolated medical power supply of claim 1, wherein: the primary side further comprises a control module and a processing module, and the secondary side further comprises a frequency-voltage converter, a processor and a controller.
3. The non-contact voltage regulation method of a high voltage isolation type medical power supply as claimed in claim 2, wherein the primary side control module is LL C controller, the primary side processing module is primary side processor, the LL C controller controls LL C resonant converter, the primary side processor is in signal transmission with the LL C controller, the frequency-voltage converter is in signal transmission with the processor, and the processor is in signal transmission with the controller.
4. The non-contact voltage regulation method of a high voltage isolated medical power supply of claim 3, wherein: the rectifier bridge is a single-phase full bridge.
5. The non-contact voltage regulation method of a high voltage isolated medical power supply of claim 4, wherein: the secondary medical power supply is a non-isolated circuit.
6. The non-contact voltage regulation method of a high voltage isolated medical power supply of claim 5, wherein: the non-isolated circuit is a Buck circuit.
7. A non-contact voltage regulation method of a high-voltage isolation type medical power supply is characterized by comprising the following steps:
(1) a primary side input voltage adjusting signal;
(2) the primary side processor processes the voltage adjusting signal to obtain the adjusting frequency fa；
(3) Collecting working frequency f of secondary side frequency-voltage converteraConverted into a voltage signal Va；
(4) The secondary side controller collects the voltage signal VaThe output voltage to be adjusted is corresponding to the output voltage, and a voltage reference signal is transmitted to the switching power supply controller;
(5) the switching power supply controller realizes voltage regulation and voltage stabilization.
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| CN202010349188.6A CN111464035A (en) | 2020-04-28 | 2020-04-28 | Non-contact voltage regulating circuit and voltage regulating method of high-voltage isolation type medical power supply |
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| CN202010349188.6A CN111464035A (en) | 2020-04-28 | 2020-04-28 | Non-contact voltage regulating circuit and voltage regulating method of high-voltage isolation type medical power supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624244A (en) * | 2012-04-21 | 2012-08-01 | 桂林理工大学 | Implementation method for high-isolation adjustable direct current regulated power supply |
| CN106452090A (en) * | 2016-11-28 | 2017-02-22 | 福州大学 | Closed-loop control system for LLC half-bridge resonance converter and system-control method |
| CN109842298A (en) * | 2019-02-19 | 2019-06-04 | 南京航空航天大学 | A kind of pulse load power-supply system and its control method |
| CN210225272U (en) * | 2019-08-21 | 2020-03-31 | 四川蔚宇电气有限责任公司 | Direct current power supply for filament of vacuum electronic device |
| US20200127669A1 (en) * | 2018-10-17 | 2020-04-23 | Nxp Usa, Inc. | Frequency drift detector, communication unit and method therefor |
-
2020
- 2020-04-28 CN CN202010349188.6A patent/CN111464035A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624244A (en) * | 2012-04-21 | 2012-08-01 | 桂林理工大学 | Implementation method for high-isolation adjustable direct current regulated power supply |
| CN106452090A (en) * | 2016-11-28 | 2017-02-22 | 福州大学 | Closed-loop control system for LLC half-bridge resonance converter and system-control method |
| US20200127669A1 (en) * | 2018-10-17 | 2020-04-23 | Nxp Usa, Inc. | Frequency drift detector, communication unit and method therefor |
| CN109842298A (en) * | 2019-02-19 | 2019-06-04 | 南京航空航天大学 | A kind of pulse load power-supply system and its control method |
| CN210225272U (en) * | 2019-08-21 | 2020-03-31 | 四川蔚宇电气有限责任公司 | Direct current power supply for filament of vacuum electronic device |
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