CN104734529A - Power unit and multi-phase electric actuator using same - Google Patents
Power unit and multi-phase electric actuator using same Download PDFInfo
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- CN104734529A CN104734529A CN201310706414.1A CN201310706414A CN104734529A CN 104734529 A CN104734529 A CN 104734529A CN 201310706414 A CN201310706414 A CN 201310706414A CN 104734529 A CN104734529 A CN 104734529A
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- power cell
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- bridge inverter
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Classifications
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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
- 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
- H02M7/493—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 the static converters being arranged for operation in parallel
-
- 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
-
- 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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
Abstract
The invention provides a power unit which comprises a multi-phase bridge rectifier, a smoothing filter and multiple H-bridge inverters. The smoothing filter is connected to an output end of the multi-phase bridge rectifier, wherein input terminals of the multiple H-bridge inverters are in electric connection with the smoothing filter in parallel, and output terminals of the multiple H-bridge inverters are in electric connection with one another in parallel and suitable for providing uniphase output for alternating current loads. Due to the fact that the power unit is provided with the three-phase bridge rectifier, by means of the power unit, the elimination of the current sharing problem which occurs in more than one three-phase bridge rectifiers is facilitated. In addition, by means of the three H-bridge inverters which are in electric connection with one another in parallel, compared with the current grade of a power unit with one H-bridge inverter, the current grade of the power unit with the three H-bridge inverters is increased. Preferably, multiple precharged resistors can be arranged between all the output ends of multiple bridge arms of the multi-phase bridge rectifier and corresponding multiple capacitor banks.
Description
Technical field
The present invention relates to power cell field, more particularly, relate to the power cell used in cascade connection type polyphase electric power driver.
Background technology
Cascade connection type polyphase electric power driver is industrially used for providing variable power to alternating current motor.These identical drivers can be used in and are not specifically related to motor but need in other application of variable output voltage or frequency.Typical driver has the conversion equipment of alternating current input power supplying and some types, and conversion equipment often uses solid state device, for fixing AC-input voltage being converted to the output of variable voltage and/or variable frequency.United States Patent (USP) 5,625, describes the driver of such type, this patent is herein incorporated by way of reference in 545.That patent describes the power supply being used as driver, this power supply uses some power cells being arranged to produce three-phase alternating current output.The power cell of multiple series connection like this can be used for providing the voltage higher than single power cell to export.
IGBT module is used to the power switch in power cell traditionally.Such as, the price very competitive superiority of two IGBT module in 62mm shell, but the rated value of maximum 400A only can be provided.This further restricts the current rating of the power cell of cascade connection type polyphase electric power driver.
Summary of the invention
For this reason, the object of this invention is to provide a kind of power cell, comprising: heterogeneous bridge rectifier, smoothing filter and multiple H bridge inverter; Described heterogeneous bridge rectifier has the input that can be electrically connected to multi-phase AC power; Described smoothing filter is connected to the output of described heterogeneous bridge rectifier; Wherein: the input terminal of described multiple H bridge inverter is electrically connected in parallel with described smoothing filter; The lead-out terminal of described multiple H bridge inverter is electrically connected in parallel and is suitable for providing single-phase output to AC load.Because described power cell has a three-phase bridge rectifier, therefore, by using described power cell, contribute to eliminating the equal flow problem occurred in more than one three-phase bridge rectifier.In addition, by using three the H bridge inverters be electrically connected in parallel in power cell, the current class of described power cell is improved compared to the current class of the power cell with a H bridge inverter.Preferably, the resistor of multiple precharge can be arranged in each output of multiple brachium pontis of heterogeneous bridge rectifier and multiple Capacitor banks each between.
Accompanying drawing explanation
The preferred exemplary embodiment illustrated with reference to the accompanying drawings, hereafter will be described in detail theme of the present invention, wherein:
Fig. 1 shows the power circuit figure often mutually with the cascade connection type multiphase driver of three power cells;
Fig. 2 shows typical power cell as shown in Figure 1;
Fig. 3 A shows the power cell according to the embodiment of the present invention;
Fig. 3 B shows power cell in accordance with another embodiment of the present invention, and this power cell can replace the power cell of Fig. 3 A;
Fig. 3 C shows power cell in accordance with another embodiment of the present invention;
Fig. 4 A shows the power cell with gate drivers according to Fig. 3 A; And
Fig. 4 B shows the drive circuit of the power cell according to Fig. 4 A.
In reference numerals list, the Reference numeral and implication thereof that use in accompanying drawing is listed with concise and to the point form.In principle, identical in accompanying drawing parts have identical Reference numeral.
Embodiment
Fig. 1 shows the power circuit figure often mutually with the cascade connection type polyphase electric power driver of three power cells.As shown in Figure 1, three-phase ac power is imported into a winding 100 of the power transformer 10 of cascade connection type multiphase driver 1.Can be that the winding 100 that Y-connection or net form connect makes three-phase secondary winding 101 to 109 be energized.The three-phase power relevant to each secondary winding in secondary winding 101 to 109 is provided to power cell 110 to 118 respectively.In the present embodiment, preferably, the secondary winding 101 to 109 that net form connects is provided, to reduce the K factor of power transformer and to improve harmonic controling.The winding that net form connects can comprise the Δ structure of (such as) Δ structure or expansion.In some cases, can operate this net form winding, with the electric phase making some secondary winding shift to an earlier date preselected angle, make other secondary winding postpone the electric phase of preselected angle, and (possibility) make the phase place of other secondary winding substantially not be moved.In the present embodiment shown in Fig. 1, the phase place describing the secondary winding of 1/3rd is by 20(degree in advance), the phase place of the secondary winding of 1/3rd is delayed by 20(degree).Its excess-three divide one secondary winding be not moved.In the embodiment in figure 1, the winding of phase shift uses the winding of the Δ structure of expansion, does not have the winding of phase shift to use the winding of Δ structure.For other voltage, required respective phase shift can by according to the quantity of every phase power cell to 60(degree) carry out divisions acquisition.Such as, if every 5 power cells mutually, phase shift is+24(degree) ,+12(degree), 0(degree) ,-12(degree) and-24(degree); If every 6 power cells mutually, phase shift is+25(degree) ,+15(degree) ,+5(degree) ,-5(degree) ,-15(degree) and-25(degree); If every 8 power cells mutually, phase shift is+18.75(degree) ,+11.25(degree) ,+3.75(degree) ,-3.75(degree) ,-11.25(degree) ,-18.75(degree).Preferably, multiple power cell is connected to each phase output circuit 120,121,122, phase output circuit 120,121,122 can represent phase A, phase B and phase C respectively.Multiple power cell can be connected in series on each phase output circuit, thus can generate the middle pressure input phase line controller with multiple low pressure and low power unit.Be connected in series and can also make often have multiple voltage status mutually; These multiple voltage statuss of every phase can be used to obtain the current waveform improved.Each power cell can form low-voltage standards in inside, and such as, although be comprised in middle pressure device, each power cell also can have the rated value of 1000 volts.In such an embodiment, use the insulating material being suitable for the middle voltage level used, each power cell and ground and other power cell can be made to insulate.
Fig. 2 shows typical power cell as shown in Figure 1.But, be understandable that, other power cell can also be used to implement the present invention.Power cell shown in Fig. 2 and United States Patent (USP) 5,625, the power cell shown in 545 is similar.As shown in Figure 2, each in power cell 110 to 118 is power converter, and described power converter converts three-phase input electric power to DC component by using the three-phase bridge rectifier be made up of diode 20a-20f.The output of this three-phase bridge rectifier is applied to capacitor 21 two ends subsequently, and described capacitor 21 can provide the storage that exports direct current and level and smooth.Use pulse-width modulation (PWM) method, the direct current power in current transformer optionally can be applied to power cell output 22a and 22b.Use bridge-type current transformer to realize pulse-width modulation, described bridge-type current transformer is made up of the semiconductor switch of such as 23a-23d.The acceptable switch element of any type can be used; Depend on power level, different solid-state modules can be selected.As shown in the figure, current transformer output uses four IGBT.In this pulse-width modulation operation, when these switching manipulations, they can be considered to close completely or disconnect completely.Will be understood that as in majority application, the power cell of iting is desirable to use in tandem type is arranged is similar and is constructed according to certain form, to limit the quantity of assembly parts and to allow power cell to be interchangeable in same driver.Power cell 110 to 118 shown in Fig. 2 can be used to all power cells in Fig. 1.
Fig. 3 A shows the power cell according to the embodiment of the present invention.As shown in Figure 3A, power cell 3 comprises three-phase bridge rectifier 30, smoothing filter 31, three H bridge inverters 32,33,34.Three-phase bridge rectifier 30 has input 30A, 30B, the 30C that can be electrically connected to three-phase alternating-current supply, and described three-phase bridge rectifier 30 can convert three-phase incoming call to DC component.The output of three-phase bridge rectifier 30 is applied to smoothing filter 31 two ends subsequently, and the storage that described smoothing filter 31 can provide direct current to export is with level and smooth.Smoothing filter 31 can be (such as) Capacitor banks.The input terminal of H bridge inverter 32,33,34 is electrically connected in parallel with smoothing filter 31.The lead-out terminal of H bridge inverter 32,33,34 is electrically connected in parallel, and is suitable for providing single-phase output to AC load.Use pulse-width modulation (PWM) method, the direct current power in smoothing filter 31 can be optionally applied to power cell output 35a and 35b.Use the H bridge inverter 32,33,34 of electrical ties in parallel to realize pulse-width modulation, each in H bridge inverter 32,33,34 is made up of semiconductor switch (such as 32a-32d, 33a-33d and 34a-34d).The acceptable switch element of any type can be used; Depend on power level, different solid-state modules can be selected.As shown in the figure, current transformer output uses four IGBT.In this pulse-width modulation operation, when these switching manipulations, they can be considered to close completely or disconnect completely.Will be understood that as in majority application, the power cell of iting is desirable to use in tandem type is arranged is similar and is constructed according to certain form, to limit the quantity of assembly parts and to allow power cell to be interchangeable in same driver.Power cell 3 shown in Fig. 3 A can be used to all power cells in Fig. 1.If three are electrically connected in parallel according to the power cell of Fig. 2, due to the I-E characteristic that the power diode used in three three-phase bridge rectifiers of power cell is different, current-sharing (current sharing) problem will be there is in the three-phase bridge rectifier of three power cells.By using the power cell according to Fig. 3 A, it only has a three-phase bridge rectifier, therefore, contributes to eliminating the equal flow problem occurred in more than one three-phase bridge rectifier.In addition, by being connected electrically in parallel in power cell by three H bridge inverters, the current class of power cell is improved compared to the current class with a H bridge inverter.Preferably, the resistor of multiple precharge can be arranged between the output of corresponding brachium pontis in multiple brachium pontis of the heterogeneous bridge rectifier Capacitor banks corresponding to multiple Capacitor banks.
With reference to figure 3A, be understandable that, for three-phase bridge rectifier 30, employ 6 diode 30a-30f, and the pulse number of circuit be 6.Three-phase bridge rectifier 30 has three brachium pontis, each brachium pontis has two diodes (two groups of diodes) of series connection, diode 30a, 30b of such as connecting, diode 30c, 30d of series connection, and diode 30e, 30f of series connection, and first the positive pole of diode be connected to the negative pole of the second diode, three-phase bridge rectifier 30 is manufactured into single component for this reason.
Fig. 3 B shows power cell in accordance with another embodiment of the present invention, the power cell of the alternative Fig. 3 A of this power cell.Power cell according to Fig. 3 B is with the difference of the power cell according to Fig. 3 A: each diode replacing three-phase bridge rectifier 30 with three diodes be electrically connected in parallel, these three diodes allow electric current to flow through according to identical direction, as the diode be replaced.Such as, diode 30a in Fig. 3 A is replaced by diode 30ax, 30ay, 30az, diode 30b in Fig. 3 A is replaced by diode 30bx, 30by, 30bz, diode 30c in Fig. 3 A is replaced by diode 30cx, 30cy, 30cz, diode 30d in Fig. 3 A is replaced by diode 30dx, 30dy, 30dz, diode 30e in Fig. 3 A is replaced by diode 30ex, 30ey, 30ez, and the diode 30f in Fig. 3 A is replaced by diode 30fx, 30fy, 30fz.By this replacement, the electric current in rectifier by three diodes conduct be electrically connected in parallel, thus improves the current class of rectifier by contrast.
By reference to Fig. 3 A and Fig. 3 B, be understandable that, depend on the requirement of the current class of rectifier, the quantity of diode in the diode group of each brachium pontis can be selected.
Fig. 3 C shows power cell in accordance with another embodiment of the present invention.According to the power cell of Fig. 3 C and be according to the difference of the power cell of Fig. 3 A: it further comprises inductor 36a, 36b of being connected electrically between output 35a, 35b and AC load.Switching difference between inductor contributes to the switching semiconductor of parallel connection compensates, if because switching semiconductor does not switch exactly at one time, then inductance contributes to reducing the current spike flowing to another from an IGBT.Be understandable that, from the angle of mechanical arrangements, in IGBT module, (such as, in two the single-phase IGBT module be electrically connected in parallel) H bridge inverter can be realized, and this assembly provides simple mode is cooled by device and be connected to external circuit.By reference to Fig. 3 A, Fig. 3 B, Fig. 3 C, semiconductor switch 32a, 33a, 34a are electrically connected in parallel, semiconductor switch 32b, 33b, 34b are electrically connected in parallel, semiconductor switch 32c, 33c, 34c are electrically connected in parallel, semiconductor switch 32d, 33d, 34d are electrically connected in parallel, make it possible to the handover event of the semiconductor switch that Synchronization Control is connected in parallel.In addition, in power diode module, (such as, in three the single-phase rectifier modules be electrically connected in parallel) three-phase rectifier can be realized, and this assembly provides simple mode is cooled by device and be connected to external circuit.
Be understandable that, power cell comprises the first assembly parts, the second assembly parts, the 3rd assembly parts.First assembly parts comprise the first single-phase rectifier 30a, the 30b of three-phase bridge rectifier 30, the first smoothing filter 31a of smoothing filter 31, and a H bridge inverter 32; Second assembly parts comprise the second single-phase rectifier 30c, the 30d of three-phase bridge rectifier 30, the second smoothing filter 31b of smoothing filter 31, and the 2nd H bridge inverter 33; 3rd assembly parts comprise the 3rd single-phase rectifier 30e, the 30f of three-phase bridge rectifier 30, the 3rd smoothing filter 31c of smoothing filter 31, and the 3rd H bridge inverter 34.As for inductor 36a, 36b, can implement it in following mechanical arrangements: such as, the lead-out terminal of power cell output 35a with 35b by lead-out terminal 32a, 32b of being mechanically arranged in for the IGBT module of a H bridge inverter 32 about the relative side of the position of the first smoothing filter 31a; The lead-out terminal of power cell output 35a with 35b by lead-out terminal 33a, 33b of being mechanically arranged in for the IGBT module of the 2nd H bridge inverter 33 about the relative side of the position of the second smoothing filter 31b; The lead-out terminal of power cell output 35a with 35b by lead-out terminal 34a, 34b of being mechanically arranged in for the IGBT module of the 3rd H bridge inverter 34 about the relative side of the position of the 3rd smoothing filter 31c.By having this structure, inductance can be provided by the relatively long wire of the lead-out terminal connecting IGBT module and power cell.Further, can by winding wire and/or the inductance value with magnetic material adjustment inductor 36a, 36b, described magnetic material is mechanically shaped and is arranged to the part around winding wire.By using described winding wire, contribute to preventing by corresponding semiconductor switch 32a, 33a, 34a; 32b, 33b, 34b; The short circuit current that 32c, 33c, 34c and/or 32d, switching difference between 33d, 34d cause.
Fig. 4 A shows the power cell according to Fig. 3 A, and this power cell has gate drivers.Be understandable that, gate drivers can be applicable to drive the power cell according to Fig. 3 B and Fig. 3 C, and gate drivers can be controlled by power cell controller in such a way: use pulse-width modulation (PWM) method, the direct current power be stored in smoothing filter 31 is optionally applied to power cell output 35a and 35b.As shown in Figure 4 A, power cell 3 comprises the gate drivers 50 of the handover event for controlling semiconductor switch 32a, 33a, 34a of being electrically connected in parallel further, makes it possible to make its handover event synchronous in time.Be understandable that, power cell 3 may further include three gate drivers (Fig. 4 A is not shown), control the handover event as the handover event of semiconductor switch 32b, 33b, 34b of one group, the handover event as 32c, 33c, 34c of a group, semiconductor switch 32d, 33d, the 34d as a group respectively, similarly, the handover event of the switching semiconductor in every group can be made in time synchronous.This structure contributes to realizing the synchronous of semiconductor switch in parallel.
Fig. 4 B shows the drive circuit of the power cell according to Fig. 4 A.As shown in Figure 4 B, for each semiconductor switch in same group (such as, the group of semiconductor switch 32a, 33a, 34a), drive circuit comprises three common mode chokes 50a, 50b, 50c.First common mode choke 50a is connected electrically between the grid of semiconductor switch 32a and emitter and gate drivers 50, second common mode choke 50b is connected electrically between the grid of semiconductor switch 33a and emitter and gate drivers 50, and the 3rd common mode choke 50c is connected electrically between the grid of semiconductor switch 34a and emitter and gate drivers 50.Three semiconductor switchs 32a, 33a, 34a are connected in parallel, and this can cause the grid voltage potential difference by the transition that the switching time in the IGBT switch of parallel connection, deviation produced between each IGBT grid.Switching during this can cause handover event is vibrated or may be damaged the too much grid voltage of IGBT.Because common mode choke contributes to making IGBT grid in parallel in decoupling to each other during switching, so, by using common mode choke, contribute to overcoming these problems.
Although according to some preferred embodiments, invention has been described, those skilled in the art are to be understood that these embodiments absolutely not should limit the scope of the invention.When not deviating from the present invention's spirit and theory, any change that embodiment is made and revised all should within the scope of the understanding of personnel with general knowledge and technology, thus fall in the scope of the present invention that limited by claims.
Claims (14)
1. a power cell, comprising:
Heterogeneous bridge rectifier, has the input that can be electrically connected to multi-phase AC power;
Smoothing filter, is connected to the output of described heterogeneous bridge rectifier;
Multiple H bridge inverter;
Wherein:
The input terminal of described multiple H bridge inverter is electrically connected in parallel with described smoothing filter; And
The lead-out terminal of described multiple H bridge inverter is electrically connected in parallel and is suitable for providing single-phase output to AC load.
2. power cell according to claim 1, wherein:
Described heterogeneous bridge rectifier comprises multiple brachium pontis; And
Each brachium pontis comprises two groups of two-terminal power semiconductors be in series electrically connected.
3. power cell according to claim 2, wherein:
Described two-terminal power semiconductor is diode.
4. the power cell according to claim 1 or 2 or 3, comprises further:
Power cell controller, for controlling described single-phase output.
5. power cell according to claim 4, wherein:
Described power cell controller comprises multiple gate drivers, described multiple gate drivers is suitable for controlling each handover event in described multiple H bridge inverter respectively, makes the handover event of each H bridge inverter of described multiple H bridge inverter upper synchronous with the handover event time of other each H bridge inverter of described multiple H bridge inverter.
6. power cell according to claim 5, wherein:
Described H bridge inverter comprises the multiple three terminal power semiconductors in the configuration of H bridge; And
Each gate drivers of described multiple gate drivers controls the handover event of the described three terminal power semiconductors that each group is in parallel in described multiple H bridge inverter.
7. the power cell according to claim 1 or 2 or 3, wherein:
Described smoothing filter comprises multiple Capacitor banks;
Realize in described multiple H bridge inverter with IGBT module each; And
One corresponding in the IGBT module of each and described multiple H bridge inverter of described multiple Capacitor banks is connected in parallel.
8. the power cell according to claim 1 or 2 or 3, wherein:
Described smoothing filter comprises multiple Capacitor banks;
Each brachium pontis of described heterogeneous bridge rectifier is single-phase rectifier module;
The corresponding output of in the single-phase rectifier module of multiple brachium pontis of each and described heterogeneous bridge rectifier of described multiple Capacitor banks is connected in parallel.
9. power cell according to claim 7, comprises further:
The resistor of multiple precharge, the resistor of described multiple precharge is arranged between each output of multiple brachium pontis of described heterogeneous bridge rectifier and one of the corresponding of described multiple Capacitor banks.
10. power cell according to claim 6, comprises further:
Multiple common-mode inductor, described multiple common-mode inductor is disposed between each of described multiple gate drivers and described three terminal power semiconductors, and this gate drivers controls the described handover event for described three terminal power semiconductors.
11. power cells according to claim 7, wherein:
The lead-out terminal of described power cell is mechanically arranged in the relative side of lead-out terminal about described smoothing filter of each IGBT module of described multiple H bridge inverter.
12. power cells according to claim 11, comprise further:
Winding wire, described winding wire is for the lead-out terminal of each IGBT module of the lead-out terminal and described multiple H bridge inverter that are electrically connected described power cell.
13. power cells according to claim 12, comprise further:
Magnetic material, described magnetic material is mechanically shaped and is arranged to the part around described winding wire.
14. 1 kinds of polyphase electric power drivers with the power cell according to claim 1 or 2 or 3, comprising:
Polyphase electric power transformer, comprises the secondary winding of at least one winding and the first quantity;
The described power cell of the first quantity, one corresponding to the secondary winding of described first quantity connects the input of each heterogeneous bridge rectifier in the power cell of described first quantity, the lead-out terminal of the power cell of multiple described first quantity is connected with other power unit cascade on every bar phase outlet line, for providing tandem type single-phase output.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310706414.1A CN104734529A (en) | 2013-12-19 | 2013-12-19 | Power unit and multi-phase electric actuator using same |
| PCT/EP2014/059484 WO2015090627A1 (en) | 2013-12-19 | 2014-05-08 | Power unit and multi-phase electric drive using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310706414.1A CN104734529A (en) | 2013-12-19 | 2013-12-19 | Power unit and multi-phase electric actuator using same |
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| CN104734529A true CN104734529A (en) | 2015-06-24 |
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| CN201310706414.1A Pending CN104734529A (en) | 2013-12-19 | 2013-12-19 | Power unit and multi-phase electric actuator using same |
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| WO (1) | WO2015090627A1 (en) |
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| JP6805865B2 (en) * | 2017-02-14 | 2020-12-23 | 株式会社明電舎 | Output side connection structure of single-phase inverter |
| CN212324008U (en) * | 2020-04-20 | 2021-01-08 | 阳光电源股份有限公司 | Inverter, power unit thereof and power module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5625545A (en) | 1994-03-01 | 1997-04-29 | Halmar Robicon Group | Medium voltage PWM drive and method |
| EP1575156B1 (en) * | 2004-02-16 | 2015-06-17 | Vacon Oyj | Synchronization of parallel-connected inverter units or frequency converters |
| FI118876B (en) * | 2006-08-25 | 2008-04-15 | Vacon Oyj | Power balance in parallel connected drives |
| JP4707041B2 (en) * | 2008-06-27 | 2011-06-22 | 株式会社ＭＥＲＳＴｅｃｈ | Synchronous motor drive power supply |
| US20130279228A1 (en) * | 2012-04-23 | 2013-10-24 | General Electric Company | System and method for improving low-load efficiency of high power converters |
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2013
- 2013-12-19 CN CN201310706414.1A patent/CN104734529A/en active Pending
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2014
- 2014-05-08 WO PCT/EP2014/059484 patent/WO2015090627A1/en active Application Filing
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| WO2015090627A1 (en) | 2015-06-25 |
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