CN102185491B - Serial and parallel connection electrical bridge type impedance network power converter - Google Patents
Serial and parallel connection electrical bridge type impedance network power converter Download PDFInfo
- Publication number
- CN102185491B CN102185491B CN201110086141.6A CN201110086141A CN102185491B CN 102185491 B CN102185491 B CN 102185491B CN 201110086141 A CN201110086141 A CN 201110086141A CN 102185491 B CN102185491 B CN 102185491B
- Authority
- CN
- China
- Prior art keywords
- switch
- power inverter
- bidirectional
- impedance network
- bridge type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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 serial and parallel connection electrical bridge type impedance network power converter which comprises an electrical bridge type impedance network circuit, wherein the electrical bridge type impedance network circuit is formed by connecting a first inductor (L1), a first capacitor (C1), a second inductor (L2) and a second capacitor (C2) in series end to end. A two-way switch (33) is diagonally connected to two connecting points (A,B) of the electrical bridge type impedance network circuit (12). A node (A) of the electrical bridge type impedance network circuit (12) is connected with an anode of an input side power converter (11); a node (P2) is connected with a cathode of the input side power converter (11); a node (P1) is connected with an anode of an output side power converter (22); and the cathode of the input side power converter (11) is connected with a cathode of the output side power converter (22). A power supply (10) is connected to a bridge arm midpoint of the input side power converter (11); and a load (20) is connected to the bridge arm midpoint of the output side power converter (22).
Description
Technical field
The present invention relates to a kind of series-parallel connection electrical bridge type impedance network power converter, particularly a kind of series-parallel connection electrical bridge type impedance network power converter that comprises connected electric bridge type impedance network circuit.
Background technology
In fields such as motor driving, generation of electricity by new energy and electric automobiles, all need to carry out the power converters such as AC-DC-AC and process, conventional power converter technology has: AC-DC commutation technique and DC-AC inversion transformation technique.Traditional power conversion system adopts diode not control rectification at AC-DC conversion stage, can give electrical network harmonic, affects the quality of power supply, and energy can only one-way flow, from mains side, flows to load-side.In order to realize green energy conversion, to reduce electric network pollution and improve efficiency, it is imperative to have High Power Factor and can realize the power conversion system of two-way flow of energy.This transformation system adopts high frequency controlled rectification and the controlled inversion transformation technique of high frequency, as shown in Figure 1.
In said system, rectification stage and inverse cascade all adopt high frequency gate-controlled switch device to realize, and have symmetry or duality on circuit structure, can equivalent analysis.Sum up, the AC-DC or the DC-AC transformation topology structure that exist at present are mainly divided into two classes, voltage source converter and current-source convertor.
Fig. 2 is typical voltage source converter, and this circuit is by three phase mains and inductance, and three-phase power converters and DC capacitor form, and wherein power inverter forms three-phase H bridge construction by 6 power switchs with anti-paralleled diode.Conventional voltage code converter AC-DC possesses BOOST circuit characteristic during rectification, and output voltage is raise, and therefore brings following shortcoming: improved the voltage of DC bus, increased the switch stress of power device.This circuit can only boost, can not step-down, in the occasion to charge in batteries, need to regulate in a big way its charging voltage, this translation circuit output voltage range is narrow, difficulty meets the demands.The conducting simultaneously of two switching tubes of same brachium pontis, no person's brachium pontis meeting shoot through, damages switching tube; And the EMI of electric power system disturbs or noise likely makes brachium pontis false triggering, thereby reduced the reliability of system.
Fig. 3 is typical current-source convertor, and this circuit is by three phase mains, three pole reactor and electric capacity, and three-phase power converters and DC inductance form, and wherein power inverter forms three-phase H bridge construction by 6 power switchs with series diode.During conventional current code converter AC-DC rectification, possesses BUCK circuit characteristic, output voltage is reduced, therefore bring following shortcoming: this circuit can only step-down, can not boost, in the occasion to charge in batteries, need to regulate in a big way its charging voltage, this translation circuit output voltage range is narrow, and difficulty meets the demands.Two switching tubes of same brachium pontis can not disconnect simultaneously, and no person's brachium pontis can lead directly to open circuit, and inductance open circuit too high voltages is damaged switching tube; And the EMI of electric power system disturbs or noise likely makes brachium pontis false triggering, thereby reduced the reliability of system.
In a word, there is following common deficiency in traditional voltage source converter and current source converter: they can only be boost/flow pattern or step-down/flow pattern current transformer, and can not be the up/down voltage current source converter that has up/down voltage current mode function concurrently, cause its output voltage current range limited.Its main circuit of voltage source converter and current source converter can not exchange use, brings much inconvenience to power electronic system designer.The anti-electromagnetic interference capability of system a little less than.
U.S. Peng professor F.Z has proposed the Z-source inventer between voltage source and current source, claims again Z-source inverter, as Fig. 4.This circuit consists of DC power supply, diode, inductance capacitance impedance network, three-phase power converters and AC load.Wherein impedance network consists of the connection of Z-shaped two groups of equal inductance L 1, L2 and capacitor C 1, C2 of numerical value, and power inverter forms three-phase H bridge construction by 6 power switchs with anti-paralleled diode.Owing to adopting unique impedance type network, Z-source inverter can work in normal inverter mode and pass-through state.During bridge arm direct pass state, impedance network energy storage, thus promote DC voltage, regulate inverter output voltage, possess BOOST circuit characteristic.Normal inverter mode, similar conventional inverter, possesses BUCK circuit characteristic.Z-source inverter is a kind of new Power Electronic Circuit topology, and single-stage conversion is efficient; Possess BOOST and BUCK circuit characteristic simultaneously, can boost and step-down, allow input voltage wide variation; Ride-through capability while providing voltage to fall, reduces surge and harmonic current; Be not afraid of straight-through fault.
To the Analysis of Topological Structure of existing source of resistance current transformer, can find, source of resistance network essence can be equivalent to a two-port network, this two-port network between power supply and load, be connected in parallel and positive and negative busbar between.Integrate, existing Z-source inverter also comes with some shortcomings, 1) source of resistance current transformer components and parts electric stress is higher, and passive impedance network is larger; 2) source of resistance network using Z-type connects, its complex structure, power busbar design comparison difficulty; 3) the appearance vibration out of control, easy of Z-source inverter system output voltage when underload and low power factor is even unstable, dwindled system applies scope, increase system and controlled complexity, 4), in power transmission system, Z-source inverter is difficult for realizing smoothly energy feedback four quadrant running; 5) Z-source inverter moves in PWM hard switching mode, has increased system electromagnetic disturbance, has increased switching loss, and switch frequency is difficult to improve with less converter volume and weight.These have hindered applying of Z-source inverter above.
In order further to improve the efficiency of converters, improve switch frequency, improve system EMC, except PWM hard switching technology is widely used in engineering field, the soft switch technique research that PWM and harmonic technology combine also makes great progress, and resonant converter is widely applied.According to the resonance manner of resonant cavity element, be divided into series resonance code converter and parallel resonance code converter two classes.Connected mode by load and resonant circuit, is divided into series load resonant code converter and shunt load resonant converter that load is connected with resonant tank.According to the connected mode of resonant element and power switch, there are no-voltage/Zero Current Switch quasi-resonance and multi-resonance converter.Power inverter adopts PWM modulation control mode, has again no-voltage/Zero Current Switch/conversion pwm converter (ZVS/ZVT, ZCS/ZCT pwm converter).Soft switch power converter is the major progress of field of power electronics, has good development and application prospect.
Fig. 5 is series resonant converter, and this circuit consists of three phase mains and inductance, three-phase power converters, inductance, electric capacity and ohmic load, and wherein power inverter forms three-phase H bridge construction by 6 power switchs.In this circuit, inductance and capacitances in series connect and compose resonant slots to realize series resonance, and power switch is opened or turn-offed when resonance potential current over-zero, to realize the effect of soft switch.
Fig. 6 is parallel resonance converter, and this circuit is by three phase mains, three pole reactor and electric capacity, three-phase power converters, and inductance, electric capacity and ohmic load form, and wherein power inverter forms three-phase H bridge construction by 6 power switchs.In this circuit, inductance and Capacitance parallel connection connect and compose resonant slots to realize parallel resonance, and power switch is opened or turn-offed when resonance potential current over-zero, to realize the effect of soft switch.
Summary of the invention
The object of the invention is to overcome existing power inverter and can not have the function that rises or fall electric current and voltage simultaneously concurrently, can not realize the shortcoming of soft switch operation simultaneously, a kind of Novel electric bridge type impedance network circuit is proposed, and a kind of power inverter that comprises described connected electric bridge type impedance network.Series-parallel connection electrical bridge type impedance network power converter of the present invention has the function that rises or fall electric current and voltage concurrently simultaneously, can realize the operation of energy feedback bidirectional power flow, its power switch has soft switch running environment, thereby improves power converter system conversion efficiency, reduces volume and weight simultaneously, improves reliability.
Connected electric bridge type impedance network circuit of the present invention is connected in series and is formed by the first inductance, the first electric capacity, the second inductance and the second electric capacity order head and the tail, this connected electric bridge type impedance network circuit has four points of connection, bidirectional switch diagonal angle is connected in the first and the 3rd tie point of described connected electric bridge type impedance network circuit, forms connected electric bridge type impedance network circuit.
Described bidirectional switch comprises the first switch and second switch, and the first switch and second switch are electric and electronic power switch.The composition form of described bidirectional switch is any one in following three kinds: described the first switch and second switch are reverse blocking IGBT switching device (RB-IGBT), and two switch reverse parallel connections form; Or described the first switch and second switch are the IGBT switching device with fly-wheel diode, and two switch differential concatenations composition, wherein the collector electrode of two IGBT switches is interconnected; Or described the first switch and second switch are the IGBT switching device with fly-wheel diode, and two switch differential concatenations composition, wherein the emitter of two IGBT switches is interconnected.
Series-parallel connection electrical bridge type impedance network power converter of the present invention is comprised of power supply, input side power inverter, connected electric bridge type impedance network circuit, outlet side power inverter and load.Described input side power inverter and outlet side power inverter adopt voltage source converter or current type converter, and the number of phases of converter can be single-phase, two-phase, three-phase or heterogeneous.The number of phases of power supply is identical with the number of phases of input side power inverter, and the number of phases of load is identical with the number of phases of outlet side power inverter.The connected mode of series-parallel connection electrical bridge type impedance network power converter is any in two kinds below: (1) described power supply is connected in the brachium pontis mid point of input side power inverter, the first node of connected electric bridge type impedance network circuit is connected with the positive pole of input side power inverter, the 4th node is connected with the negative pole of input side power inverter, Section Point is connected with the positive pole of outlet side power inverter, the negative pole of input side power inverter is connected with the negative pole of outlet side power inverter, and load is connected in the brachium pontis mid point of outlet side power inverter; (2) or described power supply be connected in the brachium pontis mid point of input side power inverter, the Section Point of connected electric bridge type impedance network circuit is connected with the positive pole of input side power inverter, the 4th node is connected with the negative pole of input side power inverter, the 3rd node is connected with the positive pole of outlet side power inverter, the negative pole of input side power inverter is connected with the negative pole of outlet side power inverter, and load is connected in the brachium pontis mid point of outlet side power inverter;
Described series-parallel connection electrical bridge type impedance network power converter can have following 4 kinds of mode of operations according to the state difference of bidirectional switch:
Mode of operation 1: series resonant converter operating state
When the first switch of the bidirectional switch of described connected electric bridge type impedance network turn-offs, and the second switch of bidirectional switch turn-offs, described two tie points of connected electric bridge type impedance network disconnect, the first inductance in connected electric bridge type impedance network and the second capacitances in series, the second inductance and the first capacitances in series, two-way series arm is connected in parallel by Section Point and the 4th node of described impedance network again.Connected electric bridge type impedance network is realized series resonance, busbar voltage or electric current can resonance zero passages, the power switch of described power inverter operates in no-voltage or Zero Current Switch mode, and described series-parallel connection electrical bridge type impedance network power converter operates in series resonant converter operating state.
Mode of operation 2: parallel resonance converter operating state
The first switch conduction when the bidirectional switch of described connected electric bridge type impedance network, and the second switch conducting of bidirectional switch, two tie points of described connected electric bridge type impedance network overlap, the first inductance and the first Capacitance parallel connection in described connected electric bridge type impedance network, the second inductance and the second Capacitance parallel connection, two-way parallel branch is connected in series in Section Point and the 4th node of described impedance network successively.Described connected electric bridge type impedance network is realized parallel resonance, busbar voltage or electric current can resonance zero passages, the power switch of described power inverter operates in no-voltage or Zero Current Switch mode, and described series-parallel connection electrical bridge type impedance network power converter operates in parallel resonance converter operating state.
Mode of operation 3: bidirectional power flow up/down voltage current type converter operating state
The first switch switch motion when the bidirectional switch of described connected electric bridge type impedance network, and the second switch switch motion of bidirectional switch, two tie points of described connected electric bridge type impedance network are along with the intermittently closed or disconnection of action of bidirectional switch, due to two equal switch conductions of switch of described bidirectional switch, electric current can two-way flow.Described series-parallel connection electrical bridge type impedance network power converter works in normal rectification or inverter mode and pass-through state.Take outlet side power inverter as example, when any one brachium pontis of outlet side power inverter is during in pass-through state, described connected electric bridge type impedance network circuit energy storage, thereby promote direct voltage or the electric current of outlet side power inverter, regulate described series-parallel connection electrical bridge type impedance network power converter output voltage or electric current, possess up voltage or current circuit characteristic.When outlet side power inverter is in normal inverter mode, similar conventional inverter, described series-parallel connection electrical bridge type impedance network power converter possesses the voltage of falling or current circuit characteristic.Series-parallel connection electrical bridge type impedance network power converter operates in bidirectional power flow liter or falls electric current and voltage code converter operating state.In grid side, adopt PWM commutation technique can realize unity power factor conversion, to electrical network no-harmonic wave pollution.
Mode of operation 4: unidirectional power stream up/down voltage current type converter operating state
The first switch switch motion in the bidirectional switch of described connected electric bridge type impedance network, and the second switch of bidirectional switch turn-offs or the first switch of bidirectional switch turn-offs and the second switch switch motion of bidirectional switch, two tie points of connected electric bridge type impedance network are along with the intermittently closed or disconnection of action of bidirectional switch, due to a switch switch conduction only in described bidirectional switch, electric current can only one-way flow.Series-parallel connection electrical bridge type impedance network power converter operates in unidirectional power stream liter or falls electric current and voltage code converter operating state.
Compared with prior art, its technical characteristics is in the present invention: series-parallel connection electrical bridge type impedance network power converter is very flexible, can make by the action of bidirectional switch power inverter operate in 4 kinds of operating states.Can operate in serial or parallel connection resonance condition, realize soft switch operation, improve system changeover efficiency, improve power inverter electromagnetic environment.Have up voltage electric current concurrently and fall electric current and voltage function, can adapt to the large application scenario of input and output voltage curent change scope.Can realize the to and fro flow of power between power supply and load, improve system changeover efficiency.Can realize unity power factor conversion, to electrical network no-harmonic wave pollution.Reduce the electric stress of passive device in impedance network circuit, thereby reduce the volume and weight of passive network; Simplify the design of system configuration and power busbar, improved system input performance, expanded the scope of application of power conversion circuit system.
Accompanying drawing explanation
Rectification-the inversion system back-to-back of Fig. 1 prior art;
The voltage source converter system of Fig. 2 prior art;
The current-source convertor system of Fig. 3 prior art;
The Z-source inverter system of Fig. 4 prior art;
The series resonant converter of Fig. 5 prior art;
The parallel resonance converter of Fig. 6 prior art;
The schematic diagram of Fig. 7 connected electric bridge type impedance network circuit of the present invention;
Fig. 8 series-parallel connection electrical bridge type impedance network power converter 1 structural representation of the present invention;
Fig. 9 series-parallel connection electrical bridge type impedance network power converter 2 structural representations of the present invention;
Figure 10 series-parallel connection connected electric bridge type impedance network of the present invention three-phase AC-AC converter 1 structural representation;
Figure 11 series-parallel connection connected electric bridge type impedance network of the present invention three-phase AC-AC converter 2 structural representations;
Figure 12 bi-directional electric power electronic power switch.
Embodiment:
Fig. 7 is the schematic diagram of connected electric bridge type impedance network circuit of the present invention.As shown in Figure 7, described connected electric bridge type impedance network circuit is connected in series and is formed impedance network by the first inductance L 1, the first capacitor C 1, the second inductance L 2 and the second capacitor C 2 order head and the tail, this network has four connected node: A, B, P1, P2, bidirectional switch 33 diagonal angles are connected in two connected node A, B of described impedance network, form connected electric bridge type impedance network circuit.
Fig. 8 is series-parallel connection electrical bridge type impedance network power converter 1 structural representation.As shown in Figure 8, series-parallel connection electrical bridge type impedance network power converter is comprised of power supply 10, input side power inverter 11, connected electric bridge type impedance network circuit 12, outlet side power inverter 22 and load 20.Described input side power inverter 11 and outlet side power inverter 22 adopt voltage source converter or current type converter, and the number of phases of converter can be single-phase, two-phase, three-phase or heterogeneous.The number of phases of power supply 10 is identical with input side power inverter 11, and the number of phases of load 20 is identical with outlet side power inverter 22.Described power supply 10 is connected in the brachium pontis mid point of input side power inverter 11, the first node A of connected electric bridge type impedance network circuit 12 is connected with the positive pole of input side power inverter 11, the 4th node P2 is connected with the negative pole of input side power inverter 11, Section Point P1 is connected with the positive pole of outlet side power inverter 22, the negative pole of input side power inverter 11 is connected with the negative pole of outlet side power inverter 22, and load is connected in the brachium pontis mid point of outlet side power inverter 22.
Fig. 9 is series-parallel connection electrical bridge type impedance network power converter 2 structural representations.As shown in Figure 9, series-parallel connection electrical bridge type impedance network power converter is comprised of power supply 10, input side power inverter 11, connected electric bridge type impedance network circuit 12, outlet side power inverter 22 and load 20.Described input side power inverter 11 and outlet side power inverter 22 adopt voltage source converter or current type converter, and the number of phases of converter can be single-phase, two-phase, three-phase or heterogeneous.Described power supply 10 is connected in the brachium pontis mid point of input side power inverter 11, the Section Point P1 of connected electric bridge type impedance network circuit 12 is connected with the positive pole of input side power inverter 11, the 4th node P2 is connected with the negative pole of input side power inverter 11, the 3rd Node B is connected with the positive pole of outlet side power inverter 22, the negative pole of input side power inverter 11 is connected with the negative pole of outlet side power inverter 22, and load is connected in the brachium pontis mid point of outlet side power inverter 22.
Figure 10 is series-parallel connection connected electric bridge type impedance network three-phase AC-AC converter circuit 1, by three phase mains 103, input side power inverter 113, connected electric bridge type impedance network circuit 12, outlet side power inverter 223, filter capacitor 233, motor load 203, is interconnected and is formed.Wherein, input power 103 is in series by three phase network and inductance; Input side power inverter 113 is three-phase VSC, by 6 power switch S1, S2, S3, S4, S5 and S6 with anti-paralleled diode, form three-phase H bridge construction, wherein S1, S3, S5 are connected on respectively the positive pole of three-phase brachium pontis, and S4, S6, S2 are connected on respectively the negative pole of corresponding three-phase brachium pontis.Wherein S1 and S4 are connected in series, and S3 and S6 are connected in series, and S5 and S2 are connected in series.Connected electric bridge type impedance network circuit 12 is connected in series and is formed by the first inductance L 1, the first capacitor C 1, the second inductance L 2 and the second capacitor C 2 head and the tail, this connected electric bridge type impedance network circuit has four points of connection A, P1, B, P2,33 jiaos of two tie points of A, B that are connected in connected electric bridge type impedance network circuit of bidirectional switch, thus form connected electric bridge type impedance network circuit.The first node A of connected electric bridge type impedance network circuit 12 is connected with the positive pole of input side power inverter 11, the 4th node P2 is connected with the negative pole of input side power inverter 11, Section Point P1 is connected with the positive pole of outlet side power inverter 22, and the negative pole of input side power inverter 11 is connected with the negative pole of outlet side power inverter 22.Outlet side power inverter 223 is three-phase current code converter, by 6 power switch S7, S8, S9, S10, S11 and S12 with series diode, form three-phase H bridge construction, wherein S7, S9, S11 are connected on respectively the positive pole of three-phase brachium pontis, S10, S12, S8 are connected on respectively the negative pole of corresponding three-phase brachium pontis, wherein S7 and S10 are connected in series, S9 and S12 are connected in series, and S11 and S8 are connected in series.Filter capacitor 233 consists of three electric capacity, and load 203 is three phase alternating current motor.
Series-parallel connection connected electric bridge type impedance network three-phase AC-AC converter circuit 1 can have following 4 kinds of mode of operations according to the state difference of bidirectional switch:
1) mode of operation 1: series resonant converter operating state is: the first switch S A in bidirectional switch 33 turn-offs, and the second switch SB of bidirectional switch turn-offs, two connected node A of connected electric bridge type impedance network circuit, 2 disconnections of B, in connected electric bridge type impedance network circuit, the first inductance L 1 is connected with the second capacitor C 2, the second inductance L 2 is connected with the first capacitor C 1, and above-mentioned two-way series arm is connected in parallel by Section Point P1 and the 4th node P2 of connected electric bridge type impedance network again.Connected electric bridge type impedance network is realized series resonance, and busbar voltage or electric current can resonance zero passages, and the power switch of described input side and outlet side power inverter operates in no-voltage or Zero Current Switch mode.
2) mode of operation 2: parallel resonance converter operating state is: the first switch S A conducting in bidirectional switch 33, and the second switch SB conducting of bidirectional switch, two tie point A, B of connected electric bridge type impedance network circuit overlap, in connected electric bridge type impedance network circuit, the first inductance L 1 is in parallel with the first capacitor C 1, the second inductance L 2 is in parallel with the second capacitor C 2, and above-mentioned two-way parallel branch is connected in series in Section Point P1 and the 4th node P2 more successively.Connected electric bridge type impedance network circuit is realized parallel resonance, and busbar voltage or electric current can resonance zero passages, and the power switch of described input side and outlet side power inverter operates in no-voltage or Zero Current Switch mode.
3) mode of operation 3: bidirectional power flow rises or falls electric current and voltage code converter operating state and is: when the first switch S A switch motion of bidirectional switch 33, and the second switch SB switch motion of bidirectional switch, two tie point A, B of connected electric bridge type impedance network circuit are along with the intermittently closed or disconnection of action of described bidirectional switch, due to two equal switch conductions of switch of described bidirectional switch, electric current can two-way flow.Series-parallel connection electrical bridge type impedance network power converter can work in normal rectification or inverter mode and pass-through state.In grid side, adopt PWM commutation technique can realize unity power factor conversion, to electrical network no-harmonic wave pollution.
4) mode of operation 4: unidirectional power stream rises or falls electric current and voltage code converter operating state: when the first switch S A switch motion of bidirectional switch 33, and the second switch SB of bidirectional switch turn-offs or the first switch S A of bidirectional switch 33 turn-offs, and the second switch SB switch motion of bidirectional switch, the A of connected electric bridge type impedance network, two tie points of B are along with the action of bidirectional switch is intermittently closed or disconnect, due to a switch switch conduction only in described bidirectional switch, electric current can only one-way flow.Series-parallel connection electrical bridge type impedance network power converter operates in unidirectional power stream liter or falls electric current and voltage code converter operating state.
Figure 11 is series-parallel connection connected electric bridge type impedance network three-phase AC-AC converter circuit 2, by three phase mains 103, input side power inverter 113, connected electric bridge type impedance network circuit 12, outlet side power inverter 223, filter capacitor 233, motor load 203, is interconnected and is formed.Wherein, input power 103 is in series by three phase network and inductance; Input side power inverter 113 is three-phase VSC, by 6 power switch S1, S2, S3, S4, S5 and S6 with anti-paralleled diode, form three-phase H bridge construction, wherein S1, S3, S5 are connected on respectively the positive pole of three-phase brachium pontis, and S4, S6, S2 are connected on respectively the negative pole of corresponding three-phase brachium pontis.Wherein S1 and S4 are connected in series, and S3 and S6 are connected in series, and S5 and S2 are connected in series.Connected electric bridge type impedance network circuit 12 is connected in series and is formed by the first inductance L 1, the first capacitor C 1, the second inductance L 2 and the second capacitor C 2 head and the tail, this connected electric bridge type impedance network circuit has four points of connection A, P1, B, P2,33 jiaos of two tie points of A, B that are connected in connected electric bridge type impedance network circuit of bidirectional switch, thus form connected electric bridge type impedance network circuit.The Section Point P1 of connected electric bridge type impedance network circuit 12 is connected with the positive pole of input side power inverter 11, the 4th node P2 is connected with the negative pole of input side power inverter 11, the 3rd Node B is connected with the positive pole of outlet side power inverter 22, and the negative pole of input side power inverter 11 is connected with the negative pole of outlet side power inverter 22.Outlet side power inverter 223 is three-phase current code converter, by 6 power switch S7, S8, S9, S10, S11 and S12 with series diode, form three-phase H bridge construction, wherein S7, S9, S11 are connected on respectively the positive pole of three-phase brachium pontis, S10, S12, S8 are connected on respectively the negative pole of corresponding three-phase brachium pontis, wherein S7 and S10 are connected in series, S9 and S12 are connected in series, and S11 and S8 are connected in series.Load 20 is three phase alternating current motor.
Figure 12 a, b, c are the structural representation of bidirectional switch 33.As shown in figure 12, described bidirectional switch 33 comprises the first switch S A and second switch SB, and the first switch S A and second switch SB are electric and electronic power switch.The composition form of described bidirectional switch 33 is any one in following three kinds of versions: (1) described first switch S A and second switch SB are reverse blocking IGBT switching device (RB-IGBT), and two switch reverse parallel connections form; (2) or described the first switch S A and second switch SB be the IGBT switching device with fly-wheel diode, and two switch differential concatenations form, wherein the collector electrode of two IGBT switches is interconnected; (3) or described the first switch S A and second switch SB be the IGBT switching device with fly-wheel diode, and two switch differential concatenations form, wherein the emitter of two IGBT switches is interconnected.
Claims (12)
1. a connected electric bridge type impedance network circuit, it is characterized in that described connected electric bridge type impedance network circuit (12) is connected in series and is formed by the first inductance (L1), the first electric capacity (C1), the second inductance (L2) and the second electric capacity (C2) order head and the tail, described connected electric bridge type impedance network circuit (12) has four connected nodes (A, P1, B, P2), and bidirectional switch (33) diagonal angle is connected in first node (A) and the 3rd node (B) of described connected electric bridge type impedance network circuit; Described bidirectional switch (33) comprises the first switch (SA) and second switch (SB), and described the first switch (SA) and second switch (SB) are electric and electronic power switch.
2. connected electric bridge type impedance network circuit as claimed in claim 1, the composition form of described bidirectional switch (33) is any one in following three kinds: described the first switch (SA) and second switch (SB) are reverse blocking IGBT switching device, and described the first switch (SA) and second switch (SB) reverse parallel connection composition; Or described the first switch (SA) and second switch (SB) are the IGBT switching device with fly-wheel diode, and described the first switch (SA) and second switch (SB) differential concatenation form, and the collector electrode of described the first switch (SA) and second switch (SB) is interconnected; Or described the first switch (SA) and second switch (SB) are the IGBT switching device with fly-wheel diode, and described the first switch (SA) and second switch (SB) differential concatenation form, and the emitter of described the first switch (SA) and second switch (SB) is interconnected.
3. a series-parallel connection electrical bridge type impedance network power converter that comprises connected electric bridge type impedance network circuit as claimed in claim 1 or 2, the first node (A) that it is characterized in that described connected electric bridge type impedance network circuit (12) is connected with the positive pole of input side power inverter (11), the 4th node (P2) is connected with the negative pole of input side power inverter (11), Section Point (P1) is connected with the positive pole of outlet side power inverter (22), and the negative pole of input side power inverter (11) is connected with the negative pole of outlet side power inverter (22); Power supply (10) is connected in the brachium pontis mid point of input side power inverter (11), and load (20) is connected in the brachium pontis mid point of outlet side power inverter (22), forms series-parallel connection electrical bridge type impedance network power converter.
4. a series-parallel connection electrical bridge type impedance network power converter that comprises connected electric bridge type impedance network circuit as claimed in claim 1 or 2, the Section Point (P1) that it is characterized in that described connected electric bridge type impedance network circuit (12) is connected with the positive pole of input side power inverter (11), the 4th node (P2) is connected with the negative pole of input side power inverter (11), the 3rd node (B) is connected with the positive pole of outlet side power inverter (22), and the negative pole of input side power inverter (11) is connected with the negative pole of outlet side power inverter (22); Power supply (10) is connected in the brachium pontis mid point of input side power inverter (11), and load (20) is connected in the brachium pontis mid point of outlet side power inverter (22), forms series-parallel connection electrical bridge type impedance network power converter.
5. series-parallel connection electrical bridge type impedance network power converter as claimed in claim 3, is characterized in that described input side power inverter (11) and the number of phases of outlet side power inverter (22) are single-phase or heterogeneous.
6. series-parallel connection electrical bridge type impedance network power converter as claimed in claim 4, is characterized in that described input side power inverter (11) and the number of phases of outlet side power inverter (22) are single-phase or heterogeneous.
7. series-parallel connection electrical bridge type impedance network power converter as claimed in claim 3, is characterized in that described input side power inverter (11) is voltage source converter or current type converter; Described outlet side power inverter (22) is voltage source converter or current type converter.
8. series-parallel connection electrical bridge type impedance network power converter as claimed in claim 4, is characterized in that described input side power inverter (11) is voltage source converter or current type converter; Described outlet side power inverter (22) is voltage source converter or current type converter.
9. series-parallel connection electrical bridge type impedance network power converter as claimed in claim 3, it is characterized in that in described power inverter, when the first switch (SA) shutoff of bidirectional switch and second switch (SB) shutoff of bidirectional switch, described power inverter operates in series resonant converter operating state; When the first switch (SA) conducting of bidirectional switch, and the second switch of bidirectional switch (SB) conducting, described power inverter operates in parallel resonance converter operating state; When the first switch (SA) switch motion of bidirectional switch, and the second switch of bidirectional switch (SB) switch motion, described power inverter operates in bidirectional power flow liter or falls electric current and voltage code converter operating state; When the first switch (SA) switch motion of bidirectional switch and the shutoff of the second switch (SB) of bidirectional switch, or when the first switch (SA) shutoff of bidirectional switch and second switch (SB) switch motion of bidirectional switch, described power inverter operates in unidirectional power stream liter or falls electric current and voltage code converter operating state.
10. series-parallel connection electrical bridge type impedance network power converter as claimed in claim 4, it is characterized in that in described power inverter, when the first switch (SA) shutoff of bidirectional switch and second switch (SB) shutoff of bidirectional switch, described power inverter operates in series resonant converter operating state; When the first switch (SA) conducting of bidirectional switch, and the second switch of bidirectional switch (SB) conducting, described power inverter operates in parallel resonance converter operating state; When the first switch (SA) switch motion of bidirectional switch, and the second switch of bidirectional switch (SB) switch motion, described power inverter operates in bidirectional power flow liter or falls electric current and voltage code converter operating state; When the first switch (SA) switch motion of bidirectional switch and the shutoff of the second switch (SB) of bidirectional switch, or when the first switch (SA) shutoff of bidirectional switch and second switch (SB) switch motion of bidirectional switch, described power inverter operates in unidirectional power stream liter or falls electric current and voltage code converter operating state.
The control method of 11. 1 kinds of series-parallel connection electrical bridge type impedance network power converters as claimed in claim 3, described power inverter by the first switch (SA) in described bidirectional switch (33), second switch (SB) conducting or turn-off can free control circuit topological structure, realize the different working modes of power inverter: when the first switch (SA) shutoff of bidirectional switch and second switch (SB) shutoff of bidirectional switch, described power inverter operates in series resonant converter operating state; When the first switch (SA) conducting of bidirectional switch, and the second switch of bidirectional switch (SB) conducting, described power inverter operates in parallel resonance converter operating state; When the first switch (SA) switch motion of bidirectional switch, and the second switch of bidirectional switch (SB) switch motion, described power inverter operates in bidirectional power flow liter or falls electric current and voltage code converter operating state; When the first switch (SA) switch motion of described bidirectional switch and the shutoff of the second switch (SB) of bidirectional switch, or when the first switch (SA) shutoff of bidirectional switch and second switch (SB) switch motion of bidirectional switch, described power inverter operates in unidirectional power stream liter or falls electric current and voltage code converter operating state.
The control method of 12. 1 kinds of series-parallel connection electrical bridge type impedance network power converters as claimed in claim 4, described power inverter by the first switch (SA) in described bidirectional switch (33), second switch (SB) conducting or turn-off can free control circuit topological structure, realize the different working modes of power inverter: when the first switch (SA) shutoff of bidirectional switch and second switch (SB) shutoff of bidirectional switch, described power inverter operates in series resonant converter operating state; When the first switch (SA) conducting of bidirectional switch, and the second switch of bidirectional switch (SB) conducting, described power inverter operates in parallel resonance converter operating state; When the first switch (SA) switch motion of bidirectional switch, and the second switch of bidirectional switch (SB) switch motion, described power inverter operates in bidirectional power flow liter or falls electric current and voltage code converter operating state; When the first switch (SA) switch motion of described bidirectional switch and the shutoff of the second switch (SB) of bidirectional switch, or when the first switch (SA) shutoff of bidirectional switch and second switch (SB) switch motion of bidirectional switch, described power inverter operates in unidirectional power stream liter or falls electric current and voltage code converter operating state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110086141.6A CN102185491B (en) | 2011-04-07 | 2011-04-07 | Serial and parallel connection electrical bridge type impedance network power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110086141.6A CN102185491B (en) | 2011-04-07 | 2011-04-07 | Serial and parallel connection electrical bridge type impedance network power converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102185491A CN102185491A (en) | 2011-09-14 |
| CN102185491B true CN102185491B (en) | 2014-04-09 |
Family
ID=44571581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110086141.6A Active CN102185491B (en) | 2011-04-07 | 2011-04-07 | Serial and parallel connection electrical bridge type impedance network power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102185491B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158071B (en) * | 2011-04-07 | 2014-08-13 | 中国科学院电工研究所 | Series-connected bridge-type impedance network power converter |
| CN109462337B (en) * | 2018-12-29 | 2024-04-16 | 北京中科绿能科技有限公司 | High step-up ratio cascading bridge type impedance network DC/DC converter and control method |
| CN109412414A (en) * | 2018-12-29 | 2019-03-01 | 北京中科绿能科技有限公司 | A kind of power conversion unit, big step-up ratio composite structure connected electric bridge type impedance network DC/DC converter and control method |
| EP3939156A4 (en) * | 2019-03-11 | 2022-11-23 | Versitech Limited | Ac-to-dc and dc-to-ac power conversion |
| CN111969851B (en) * | 2020-09-11 | 2021-12-28 | 中国第一汽车股份有限公司 | Four-phase bidirectional DCDC converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH643693A5 (en) * | 1980-11-07 | 1984-06-15 | Alsthom Cgee | Device for compensation of electric power network in reactive |
| CN101489326A (en) * | 2008-01-14 | 2009-07-22 | 杨泰和 | Uni-directional light emitting diode drive circuit in bi-directional power parallel resonance |
-
2011
- 2011-04-07 CN CN201110086141.6A patent/CN102185491B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH643693A5 (en) * | 1980-11-07 | 1984-06-15 | Alsthom Cgee | Device for compensation of electric power network in reactive |
| CN101489326A (en) * | 2008-01-14 | 2009-07-22 | 杨泰和 | Uni-directional light emitting diode drive circuit in bi-directional power parallel resonance |
Non-Patent Citations (2)
| Title |
|---|
| "Four Quasi-Z-Source Inverters";Joel Anderson等;《Power Electronics Specialists Conference》;20080619;第2743-2749页 * |
| Joel Anderson等."Four Quasi-Z-Source Inverters".《Power Electronics Specialists Conference》.2008, |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102185491A (en) | 2011-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102158072B (en) | Power inverter of parallel-connected electric bridge type impedance network | |
| CN102158071B (en) | Series-connected bridge-type impedance network power converter | |
| CN111064359A (en) | Wide-range bidirectional conversion circuit and control method | |
| CN106936319B (en) | Isolated three-port bidirectional DC-DC converter | |
| CN101860192B (en) | Three-state three-level PFC circuit and multi-state three-level PFC circuit | |
| CN103269178B (en) | Single-stage type isolated type three-phase two-way AC/DC converter and control method thereof | |
| CN105305855B (en) | Three-phase isolation type bidirectional AC-DC converter and its control method | |
| CN106301042B (en) | A kind of seven electrical level inverters | |
| CN102185480B (en) | Bidirectional isolation direct-current converter | |
| CN111478573B (en) | Power factor adjustment framework suitable for single-phase and three-phase power grid and control method thereof | |
| CN102185491B (en) | Serial and parallel connection electrical bridge type impedance network power converter | |
| CN102005962A (en) | Buck-boost grid-connected inverter and control method thereof | |
| CN105119516A (en) | Quasi Z-source inverter with high boost gain | |
| CN107888073B (en) | Alternating current-direct current hybrid energy router of all-round soft switch | |
| CN105553271A (en) | Control method of three-phase DC converter | |
| CN107332456B (en) | A kind of three-phase passive flexible switch inverter circuit | |
| CN104811075B (en) | A kind of control method of combined converter | |
| CN105048854A (en) | Three-phase non-isolated grid connection converter and air-conditioning system | |
| CN106899203A (en) | Positive activation type five-electrical level inverter | |
| CN110829868A (en) | Forward swiss rectifier based on resonance reset isolation | |
| CN108683345B (en) | Three-phase improved double-Buck/Boost converter based on SiC diode | |
| CN116722763A (en) | Bidirectional-conversion non-isolated three-phase converter and control method thereof | |
| CN106208788A (en) | A kind of multimode voltage source inverter based on AAC | |
| CN207530714U (en) | A kind of multiple module commutator transformer | |
| CN209345029U (en) | Five level inverse conversion topological circuits of one kind and five-electrical level inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |