CN201365126Y - 400 Hz dynamic voltage compensation device - Google Patents
400 Hz dynamic voltage compensation device Download PDFInfo
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- CN201365126Y CN201365126Y CNU2009200369472U CN200920036947U CN201365126Y CN 201365126 Y CN201365126 Y CN 201365126Y CN U2009200369472 U CNU2009200369472 U CN U2009200369472U CN 200920036947 U CN200920036947 U CN 200920036947U CN 201365126 Y CN201365126 Y CN 201365126Y
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Abstract
The utility model discloses a 400 Hz dynamic voltage compensation device, which comprises an isolating step-down transformer, a series transformer, a load, an LC filtering module, an 18-pulsed rectifier, a three/single phase inverse module and a detection module. The primary side of the isolating step-down transformer is connected with a three-phase AC output end of the power network; the secondary side of the isolating step-down transformer is connected with the input end of the 18-pulsed rectifier, the input end of the detection module and one end of the secondary side of the series transformer respectively; the other end of the secondary side of the series transformer is serially connected with the load, and then respectively connected with the zero point N of the secondary side of the isolating step-down transformer and the input end of the detection module; the primary side of the series transformer is serially connected with the LC filtering module, and then connected with the output end of the three/single phase inverse module; and the output end of the detection module is connected with the input end of the three/single phase inverse module. The utility model solves the problem of ascending and descending of cables in a linear power-up system, and has the advantages of low cost, simple control and easy engineering realization.
Description
Technical field
The present invention relates to a kind of dynamic voltage compensation device, relate in particular to a kind of 400Hz dynamic voltage compensation device.
Background technology
The straight line electricity applying system on modern airport adopts fixed 400Hz power supply that aircraft maintenance and the required 115V/400Hz three-phase and four-line alternating current of engine start are provided.Fixing 400Hz power supply can be the state type power electronic converter that 400Hz generating set or three-phase 380V/50Hz civil power are transformed to 115V/400Hz three-phase and four-line alternating current.Power up in the supply power mode at straight line, because the particularity on airport and power supply ensure the needs of many airplanes, the output cable length of converter is generally longer.When heavy load, owing to be subjected to the cable pressure drop affects, the steady state voltage of cable end piece can exceed index request; At impact or prominent when unloading load, what the transient voltage of cable end piece also can exceed equipment allows to bear voltage range.The traditional solution of this problem has:
(1) selects special-purpose immediate frequency cable for use, reduce the unit length impedance of cable, reach the purpose that reduces the cable pressure drop;
(2) make the intermediate frequency unit export the voltage of higher magnitude, reduce the cable loss, obtain the qualified power supply that the aircraft load needs from load side by the transformer step-down again;
(3) can realize that power supply is redundant by install a UPS additional in load-side,, just cut off input voltage, change by the UPS supply of electrical energy if supply power voltage exceeds aircraft load power consumption index;
(4) by identification cable data, detected transient load size and character, the mode of the reference voltage of real-time regulated 50Hz/400Hz converter satisfies the electric requirement.
Preceding two kinds of schemes can not thoroughly be eliminated the cable pressure drop, and cost is higher; The third scheme adopts the total power conversion, and cost is too high.The 4th kind of scheme need be carried out complicated calculating, the practical difficulty of engineering, and an incompatible power supply is to the demand of many airplane power supplies.
(Dynamic voltage Restorer DVR) is a kind of electric energy quality controller that is series between power supply and the sensitive loads to dynamic voltage compensator.When line voltage took place to fall temporarily or rises temporarily, dynamic voltage compensator can be exported bucking voltage fast, and sensitive loads side voltage is returned to the normal voltage value.Dynamic voltage compensator only needs the departure of compensation network voltage and nominal load voltage, and dynamic response is very fast, therefore is considered to solve most economical, the most effective a kind of power electronic equipment of voltage dip problem.But the research to DVR at present also mainly concentrates on the 50Hz occasion with application, and the application of 400Hz dynamic voltage compensator is not arranged.
Summary of the invention
The technical problems to be solved in the utility model is to propose a kind of 400Hz dynamic voltage compensation device at the defective that prior art exists.
A kind of 400Hz dynamic voltage compensation device of the utility model, it is characterized in that comprising: insulate step-down transformer, series transformer, load, the LC filtration module, 18 pulse rectifiers, three single-phase inversion module and detection modules, the three-phase alternating current output of the former edge joint electrical network of insulate step-down transformer wherein, the secondary of insulate step-down transformer connects the input of 18 pulse rectifiers respectively, one end of the input of detection module and series transformer secondary, meet the N and the input of detection module at zero point of insulate step-down transformer secondary after the load of the other end of series transformer secondary serial connection respectively, connect the output of three single-phase inversion modules behind the serial connection LC filtration module of the former limit of series transformer, the input of the output termination three single-phase inversion modules of 18 pulse rectifiers, the input of the output termination three single-phase inversion modules of detection module.
The utility model has solved the cable problem of pressure drop in the straight line electricity applying system, but compensating three-phase unbalance voltage is with low cost, and control is simple, is easy to Project Realization.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is the control schematic diagram of A phase inversion module in the utility model;
Fig. 3 is the utility model main program flow chart;
Fig. 4 is a relatively interruption subroutine flow chart of the utility model T2;
Fig. 5 is the utility model CAP5 capture interrupt subprogram.
Embodiment
As seen from Figure 1: a kind of 400Hz dynamic voltage compensation device, it is characterized in that comprising: insulate step-down transformer, series transformer, load, the LC filtration module, 18 pulse rectifiers, three single-phase inversion module and detection modules, the three-phase alternating current output of the former edge joint electrical network of insulate step-down transformer wherein, the secondary of insulate step-down transformer connects the input of 18 pulse rectifiers respectively, one end of the input of detection module and series transformer secondary, meet the N and the input of detection module at zero point of insulate step-down transformer secondary after the load of the other end of series transformer secondary serial connection respectively, connect the output of three single-phase inversion modules behind the serial connection LC filtration module of the former limit of series transformer, the input of the output termination three single-phase inversion modules of 18 pulse rectifiers, the input of the output termination three single-phase inversion modules of detection module.
The three-phase alternating voltage of electrical network at first is input to the former limit of insulate step-down transformer; The secondary voltage of insulate step-down transformer outputs to 18 pulse rectifiers and series transformer simultaneously; Described 18 pulse rectifiers comprise three filter inductance L1, L2, L3, an autotransformer and three diode rectification module master bridges, auxilliary bridge 1 and auxilliary bridges 2; The direct current of 18 pulse rectifiers outputs to three single-phase inversion modules; Described inversion module comprises dc bus capacitor, and full-bridge circuit; Inversion module outputs to the LC filter, links to each other with the former limit of series transformer again; The secondary of series transformer seals in the secondary of isolating transformer, links to each other with load; Detection module detects the voltage of insulate step-down transformer secondary and the voltage of load-side, handles, and obtains the needed switch controlling signal of inversion module.Detect control module sampling insulate step-down transformer secondary voltage and load side voltage, phase-locked loop is phase-locked to the insulate step-down transformer secondary voltage in the detection control module, exports one and the synchronous unit of insulate step-down transformer secondary voltage sine wave; Control system calculates the load side voltage effective value in the detection control module, is subtracted each other by the reference voltage effective value, and deviate is sent into pi regulator, and the unit sine that the signal of output and phase-locked loop obtain multiplies each other, and the result sends into the SPWM drive signal generator.
The former limit of described insulate step-down transformer is the △ type, connection be the input voltage of three-phase three-wire system, the secondary of insulate step-down transformer is the Y type, output be the alternating voltage of three-phase four-wire system; Less than former limit winding voltage, input voltage value fluctuateed up and down is converted to downward fluctuation to the secondary winding voltage of insulate step-down transformer with certain proportion.
Described 18 pulse rectifiers comprise: the secondary voltage of insulate step-down transformer is input to the former limit of autotransformer through filtering inductance L 1, L2, L3, and the former limit of autotransformer is connected to main diode rectification module 1 simultaneously; Other two groups of secondary of insulate step-down transformer output to two auxilliary diode rectification modules 1,2;
Described three single-phase inversion modules comprise three separate single-phase inversion modules, described three single-phase inversion modules are composed in parallel by three identical single-phase inversion modules of structure, the identical single-phase inversion module of described three structures is respectively: A phase inversion module, B phase inversion module and C be inversion module mutually, wherein A phase inversion module comprises the 3rd capacitor C 3, the 51 switching tube 51, the 5th twelvemo is closed pipe 52, the 53 switching tube 53 and the 54 switching tube 54, wherein the direct current of rectifier output is input to dc bus capacitor C3, the input of the 3rd capacitor C 3 connects the drain electrode of the 51 switching tube 51 and the drain electrode of the 53 switching tube 53 respectively, the output of the 3rd capacitor C 3 connects the 5th twelvemo respectively and closes the source electrode of pipe 52 and the source electrode of the 54 switching tube 54, the source electrode of the 51 switching tube 51 connects the 5th twelvemo respectively and closes the drain electrode of pipe 52 and the output of LC filtration module, and the source electrode of the 53 switching tube 53 connects the drain electrode of the 54 switching tube 54 and the output of LC filtration module respectively;
B phase inversion module comprises second capacitor C 2, the 41 switching tube 41, the 4th twelvemo is closed pipe 42, the 43 switching tube 43 and the 44 switching tube 44, wherein the input of second capacitor C 2 connects the drain electrode of the 41 switching tube 41 and the drain electrode of the 43 switching tube 43 respectively, the output of second capacitor C 2 connects the 4th twelvemo respectively and closes the source electrode of pipe 42 and the source electrode of the 44 switching tube 44, the source electrode of the 41 switching tube 41 connects the 4th twelvemo respectively and closes the drain electrode of pipe 42 and the output of LC filtration module, and the source electrode of the 43 switching tube 43 connects the drain electrode of the 44 switching tube 44 and the output of LC filtration module respectively;
C phase inversion module comprises first capacitor C 1, the 31 switching tube 31, thirty-twomo closes pipe 32, the 33 switching tube 33 and the 34 switching tube 34, wherein the input of first capacitor C 1 connects the drain electrode of the 31 switching tube 31 and the drain electrode of the 33 switching tube 33 respectively, the output of first capacitor C 1 connects thirty-twomo respectively and closes the source electrode of pipe 32 and the source electrode of the 34 switching tube 34, the source electrode of the 31 switching tube 31 connects thirty-twomo respectively and closes the drain electrode of pipe 32 and the output of LC filtration module, and the source electrode of the 33 switching tube 33 connects the drain electrode of the 34 switching tube 34 and the output of LC filtration module respectively.
Inversion module output links to each other with the LC filtration module, is respectively: the A phase from the output of two brachium pontis mid points, is connected to inductance L a, capacitor C a; The B phase from the output of two brachium pontis mid points, is connected to inductance L b, capacitor C b; The C phase from the output of two brachium pontis mid points, is connected to inductance L c, capacitor C c.The output of LC filtration module links to each other with the former limit of series transformer, is respectively: the A phase, and capacitor C a is in parallel with series transformer Ta; The B phase, capacitor C b is in parallel with series transformer Tb; The C phase, capacitor C c is in parallel with series transformer Tc.Series transformer Ta, Tb, Tc connect respectively and insert A, B, C three-phase main circuit.
Described switching tube adopts the IGBT module.
18 pulse rectifiers adopt the multiple-pulse commutation technique in the utility model, do not need to add commutation controller, and Harmonics of Input is less.
Inversion module adopts the PWM full-bridge inverting in the utility model, and three-phase output is separate, can compensating three-phase unbalance voltage.
As seen from Figure 2: detect control module need sample insulate step-down transformer secondary voltage and load side voltage.Control system comprises phase-locked loop, and the closed-loop control of load side voltage effective value, and phase-locked loop is realized phase-locked to the insulate step-down transformer secondary voltage, exports one and the synchronous unit of insulate step-down transformer secondary voltage sine wave; Control system calculates the load side voltage effective value, is subtracted each other by the reference voltage effective value, and deviate is sent into pi regulator, and the unit sine that the signal of output and phase-locked loop obtain multiplies each other, and the result sends into the SPWM drive signal generator.The drive signal of full-bridge circuit in the output inversion module of drive signal generator.
Output of control system control inversion module and the synchronous voltage of insulate step-down transformer secondary voltage make the load side voltage effective value be stabilized in the reference voltage effective value in the utility model.
By Fig. 3,4,5 as seen: the software flow in the utility model control system comprises initialization subroutine, interrupt service subroutine.Wherein initialization subroutine comprises the system parameters initialization subroutine: system initialization, EVA the EVB module initialization, ADC module initialization, and initialization of variable subprogram; Interrupt service subroutine comprises that T2 relatively interrupts and the CAP5 capture interrupt.
System enters relatively interrupt service subroutine of T2, at first carries out the ADC conversion, and the sampled value of threephase load voltage is converted to digital quantity by analog quantity; Calculate the effective value of threephase load side voltage by the output variable of ADC; Effective value and reference quantity are compared, carry out PI and regulate; The direct current output variable that PI regulates multiplies each other with the unit sine wave again, obtains modulating wave; Modulating wave and triangular wave are handed over to cut and are just obtained the drive signal of switching tube, and withdraw from relatively interrupt service subroutine of T2, wait for that interrupt event takes place next time.
Described CAP5 capture interrupt subprogram realizes phase-locked function.This program is by comparing the phase difference of input voltage and inversion module output voltage, and adjusting T1, T3 period register T1PR, T3PR change the frequency of inversion module output voltage, thereby realize phase-locked.
Claims (2)
1. 400Hz dynamic voltage compensation device, it is characterized in that comprising: insulate step-down transformer, series transformer, load, the LC filtration module, 18 pulse rectifiers, three single-phase inversion module and detection modules, the three-phase alternating current output of the former edge joint electrical network of insulate step-down transformer wherein, the secondary of insulate step-down transformer connects the input of 18 pulse rectifiers respectively, one end of the input of detection module and series transformer secondary, meet the N and the input of detection module at zero point of insulate step-down transformer secondary after the load of the other end of series transformer secondary serial connection respectively, connect the output of three single-phase inversion modules behind the serial connection LC filtration module of the former limit of series transformer, the input of the output termination three single-phase inversion modules of 18 pulse rectifiers, the input of the output termination three single-phase inversion modules of detection module.
2. a kind of 400Hz dynamic voltage compensation device according to claim 1, it is characterized in that: described three single-phase inversion modules are composed in parallel by three identical single-phase inversion modules of structure, the identical single-phase inversion module of described three structures is respectively: A phase inversion module, B phase inversion module and C be inversion module mutually, wherein A phase inversion module comprises the 3rd electric capacity (C3), the 51 switching tube (51), the 5th twelvemo is closed pipe (52), the 53 switching tube (53) and the 54 switching tube (54), wherein the input of the 3rd electric capacity (C3) connects the drain electrode of the 51 switching tube (51) and the drain electrode of the 53 switching tube (53) respectively, the output of the 3rd electric capacity (C3) connects the 5th twelvemo respectively and closes the source electrode of pipe (52) and the source electrode of the 54 switching tube (54), the source electrode of the 51 switching tube (51) connects the 5th twelvemo respectively and closes the drain electrode of pipe (52) and the output of LC filtration module, and the source electrode of the 53 switching tube (53) connects the drain electrode of the 54 switching tube (54) and the output of LC filtration module respectively;
B phase inversion module comprises second electric capacity (C2), the 41 switching tube (41), the 4th twelvemo is closed pipe (42), the 43 switching tube (43) and the 44 switching tube (44), wherein the input of second electric capacity (C2) connects the drain electrode of the 41 switching tube (41) and the drain electrode of the 43 switching tube (43) respectively, the output of second electric capacity (C2) connects the 4th twelvemo respectively and closes the source electrode of pipe (42) and the source electrode of the 44 switching tube (44), the source electrode of the 41 switching tube (41) connects the 4th twelvemo respectively and closes the drain electrode of pipe (42) and the output of LC filtration module, and the source electrode of the 43 switching tube (43) connects the drain electrode of the 44 switching tube (44) and the output of LC filtration module respectively;
C phase inversion module comprises first electric capacity (C1), the 31 switching tube (31), thirty-twomo closes pipe (32), the 33 switching tube (33) and the 34 switching tube (34), wherein the input of first electric capacity (C1) connects the drain electrode of the 31 switching tube (31) and the drain electrode of the 33 switching tube (33) respectively, the output of first electric capacity (C1) connects thirty-twomo respectively and closes the source electrode of pipe (32) and the source electrode of the 34 switching tube (34), the source electrode of the 31 switching tube (31) connects thirty-twomo respectively and closes the drain electrode of pipe (32) and the output of LC filtration module, and the source electrode of the 33 switching tube (33) connects the drain electrode of the 34 switching tube (34) and the output of LC filtration module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200369472U CN201365126Y (en) | 2009-03-02 | 2009-03-02 | 400 Hz dynamic voltage compensation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2009200369472U CN201365126Y (en) | 2009-03-02 | 2009-03-02 | 400 Hz dynamic voltage compensation device |
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| CN201365126Y true CN201365126Y (en) | 2009-12-16 |
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| CNU2009200369472U Expired - Fee Related CN201365126Y (en) | 2009-03-02 | 2009-03-02 | 400 Hz dynamic voltage compensation device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324858A (en) * | 2011-09-23 | 2012-01-18 | 南京航空航天大学 | A kind of vertoro that merges voltage stabilizing and harmonic wave injection dual-use function |
| CN102593822A (en) * | 2012-01-18 | 2012-07-18 | 北京四方继保自动化股份有限公司 | Frequency converter dynamic voltage compensation device with low voltage ride through capability |
| CN102723738A (en) * | 2012-07-05 | 2012-10-10 | 北京交通大学 | Modularized dynamic voltage regulating system based on cascade structure |
| CN105281328A (en) * | 2015-10-26 | 2016-01-27 | 上海交通大学 | Static model and steady power flow analysis method of more electric aircraft electric system |
| CN106961111A (en) * | 2017-04-28 | 2017-07-18 | 上海电力学院 | A kind of two-way dynamic voltage regulation device |
| CN109510211A (en) * | 2018-12-05 | 2019-03-22 | 广西大学 | A kind of dynamic electric voltage recovery device |
| CN109687742A (en) * | 2018-12-11 | 2019-04-26 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of phase shortage of airborne power supply, over-voltage, under-voltage condition monitor instruction system |
| CN114300244A (en) * | 2022-01-06 | 2022-04-08 | 北京东方计量测试研究所 | Two-stage error compensation SCOTT voltage transformation device |
-
2009
- 2009-03-02 CN CNU2009200369472U patent/CN201365126Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324858A (en) * | 2011-09-23 | 2012-01-18 | 南京航空航天大学 | A kind of vertoro that merges voltage stabilizing and harmonic wave injection dual-use function |
| CN102324858B (en) * | 2011-09-23 | 2013-12-18 | 南京航空航天大学 | Voltage transforming rectifier with dual functions of voltage stabilization and harmonic injection |
| CN102593822A (en) * | 2012-01-18 | 2012-07-18 | 北京四方继保自动化股份有限公司 | Frequency converter dynamic voltage compensation device with low voltage ride through capability |
| CN102723738A (en) * | 2012-07-05 | 2012-10-10 | 北京交通大学 | Modularized dynamic voltage regulating system based on cascade structure |
| CN102723738B (en) * | 2012-07-05 | 2014-12-03 | 北京交通大学 | Modularized dynamic voltage regulating system based on cascade structure |
| CN105281328A (en) * | 2015-10-26 | 2016-01-27 | 上海交通大学 | Static model and steady power flow analysis method of more electric aircraft electric system |
| CN105281328B (en) * | 2015-10-26 | 2018-11-16 | 上海交通大学 | The static models and steady-state load flow analysis method of more electricity aircraft electrical power systems |
| CN106961111A (en) * | 2017-04-28 | 2017-07-18 | 上海电力学院 | A kind of two-way dynamic voltage regulation device |
| CN109510211A (en) * | 2018-12-05 | 2019-03-22 | 广西大学 | A kind of dynamic electric voltage recovery device |
| CN109687742A (en) * | 2018-12-11 | 2019-04-26 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of phase shortage of airborne power supply, over-voltage, under-voltage condition monitor instruction system |
| CN114300244A (en) * | 2022-01-06 | 2022-04-08 | 北京东方计量测试研究所 | Two-stage error compensation SCOTT voltage transformation device |
| CN114300244B (en) * | 2022-01-06 | 2023-12-19 | 北京东方计量测试研究所 | Double-stage error compensation SCOTT transformer |
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Granted publication date: 20091216 Termination date: 20130302 |