WO2016092603A1 - 電力変換装置および電力変換装置の制御方法 - Google Patents
電力変換装置および電力変換装置の制御方法 Download PDFInfo
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- WO2016092603A1 WO2016092603A1 PCT/JP2014/082364 JP2014082364W WO2016092603A1 WO 2016092603 A1 WO2016092603 A1 WO 2016092603A1 JP 2014082364 W JP2014082364 W JP 2014082364W WO 2016092603 A1 WO2016092603 A1 WO 2016092603A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/0004—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
- H02P23/0027—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control using different modes of control depending on a parameter, e.g. the speed
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- the present invention relates to a power converter and a method for controlling the power converter.
- a power converter that controls the drive of a three-phase AC motor converts the AC or DC voltage into an arbitrary three-phase AC voltage and outputs it by controlling on / off of the switching circuit based on an arbitrary three-phase AC voltage command. To do.
- the switching circuit control signal is generated by comparing each phase voltage command with a triangular wave. If each phase voltage command exceeds the amplitude of the triangular wave, the control signal is appropriately generated. I can't. Therefore, there is a method of improving the voltage utilization rate by injecting a zero-phase voltage into the three-phase AC voltage command and reducing the amplitude of each phase voltage command.
- zero-phase voltage may be injected for the purpose of reducing switching circuit loss.
- a control method in which any one phase of switching is rested is called two-phase modulation (two-phase switching)
- a control method that switches in three phases is called three-phase modulation (three-phase switching).
- Zero phase voltage injection represented by these is the presence or absence of zero phase voltage injection, when switching the zero phase voltage to be injected, the phase voltage becomes discontinuous, and the current flowing to the three-phase AC motor pulsates, An excessive current jump may occur and the power converter or the three-phase AC motor may be burned out.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2012-70497
- a forward conversion unit that converts an input AC voltage into DC and a plurality of switching elements for converting the DC voltage into an AC voltage of an arbitrary frequency by PWM control using two-phase switching and three-phase switching
- a transition period in which two-phase switching and three-phase switching are mixed is provided at the time of switching between the two-phase switching and the three-phase switching, and in the transition period, transient processing between the three-phase switching and the two-phase switching is performed.
- an object of the present invention is to provide a power converter that does not generate the current pulsation and current jump even in an electric motor having a small electric time constant.
- a power conversion device comprising: a control circuit that changes a zero-phase voltage of a first modulation injected into a voltage command of each phase depending on a frequency, voltage, or time.
- a power conversion device and a control method for the power conversion device capable of suppressing pulsation and jumping of a current flowing through an electric motor without causing the phase voltage to be discontinuous even when the zero-phase voltage is switched. Can do.
- FIG. 3 is an example of an embodiment configuration in Example 1.
- FIG. It is an example of the voltage command frequency in Example 1, a zero phase voltage, and a voltage command.
- 10 is an example of an embodiment configuration in Example 2.
- FIG. It is an example of the voltage command frequency in Example 2, a zero phase voltage, and a voltage command.
- 10 is an example of an embodiment configuration in Example 3.
- FIG. It is an example of the voltage command frequency in Example 3, a zero phase voltage, and a voltage command.
- FIG. 1 is an example of an embodiment configuration according to the first embodiment.
- the power converter 101 that controls the driving of the three-phase AC induction motor 110 includes a rectifier circuit 102, a smoothing circuit 103, a switching circuit controller 107, a switching circuit 109, a zero-phase voltage generator 112, a zero-phase voltage regulator 114, and a zero.
- a phase voltage injector 116 is included.
- the single-phase AC voltage output from the single-phase AC power supply 100 is rectified by the rectifier circuit 102 and smoothed by the smoothing circuit 103 to generate a DC voltage.
- the switching circuit controller 107 generates the switching circuit control signal 108 so that a voltage based on the voltage command 106 after the zero-phase voltage injection is applied to the three-phase AC induction motor 110.
- the switching circuit 109 converts a DC voltage into a three-phase AC voltage based on the switching circuit control signal 108.
- the zero-phase voltage generator 112 generates the zero-phase voltage 113 for the purpose of improving the utilization rate of the voltage output from the switching circuit 109 based on the voltage command 111 before the zero-phase voltage injection.
- Examples of the zero-phase voltage to be generated include a third-order harmonic of the voltage command 111 before the zero-phase voltage injection.
- the zero-phase voltage regulator 114 adjusts the zero-phase voltage 113 based on the frequency of the voltage command 111 before the zero-phase voltage injection.
- the zero phase voltage 113 may be adjusted based on the frequency of the voltage command 106 after the zero phase voltage injection.
- the zero phase voltage injector 116 injects the adjusted zero phase voltage 115 to the voltage command 111 before the zero phase voltage injection.
- the zero phase voltage is not injected, that is, when the zero phase voltage is zero and the frequency of the voltage command 111 before the zero phase voltage injection is high.
- FIG. 2 is an example of the voltage command frequency, zero-phase voltage, and voltage command in the first embodiment.
- the frequencies 201, 202, 203, and 204 are arbitrary points of the voltage command frequency 200, and increase in the order described above.
- Zero phase voltages 205, 206, 207, and 208 are zero phase voltages at frequencies 201, 202, 203, and 204, respectively.
- the post-zero-phase voltage injection voltage commands 209, 210, 211, and 212 are post-zero-phase voltage injection voltage commands at frequencies 201, 202, 203, and 204, respectively.
- the voltage command can be continuously changed by gradually increasing the zero-phase voltage injected according to the voltage command frequency 200. Therefore, since the voltage applied to the three-phase AC induction motor 110 continuously changes, it is possible to suppress pulsation and jump of the current flowing through the three-phase AC induction motor 110.
- FIG. 3 is an example of an embodiment configuration in the second embodiment.
- the power conversion device 301 that controls the driving of the three-phase AC permanent magnet synchronous motor 310 includes a DC voltage detector 304, a switching circuit controller 307, a switching circuit 109, a zero-phase voltage generator 312, a zero-phase voltage regulator 314, and zero.
- a phase voltage injector 116 is included.
- the DC voltage output from the DC power supply 300 is input to the switching circuit 109.
- DC voltage detector 304 detects a DC voltage input to the switching circuit 109.
- the switching circuit controller 307 generates the switching circuit control signal 108 so that a voltage based on the voltage command 106 after the zero-phase voltage injection is applied to the three-phase AC permanent magnet synchronous motor 310.
- the zero-phase voltage generator 312 generates a zero-phase voltage for the purpose of reducing the number of switching operations of the switching circuit 109 based on the voltage command 111 and the detected DC voltage 305 before injecting the zero-phase voltage. For example, the difference between the maximum phase of the voltage command 111 before the zero-phase voltage injection and the maximum voltage that the switching circuit 109 can output, or the minimum phase of the voltage command 111 before the zero-phase voltage injection and the minimum voltage that the switching circuit 109 can output There is a difference with voltage.
- the zero-phase voltage regulator 314 adjusts the zero-phase voltage 113 based on the norm of the voltage command 111 before the zero-phase voltage injection.
- the zero phase voltage 113 may be adjusted based on the norm of the voltage command 106 after the zero phase voltage injection.
- the zero phase voltage is not injected, that is, when the zero phase voltage is zero and the norm of the voltage command 111 before the zero phase voltage injection is high.
- FIG. 4 is an example of the voltage command norm, zero-phase voltage, and voltage command in the second embodiment.
- Norms 401, 402, 403, and 404 are arbitrary points of voltage command norm 400, and increase in the order described above.
- Zero phase voltages 405, 406, 407, and 408 are zero phase voltages at norms 401, 402, 403, and 404, respectively.
- the voltage commands 409, 410, 411, 412 after the zero-phase voltage injection are voltage commands after the zero-phase voltage injection in the norms 401, 402, 403, 404, respectively.
- the voltage command can be continuously changed by gradually increasing the zero-phase voltage injected according to the voltage command norm 400. Therefore, since the voltage applied to the three-phase AC permanent magnet synchronous motor 310 continuously changes, it is possible to suppress pulsation and jump of the current flowing through the three-phase AC permanent magnet synchronous motor 310.
- FIG. 5 is an example of an embodiment configuration in the third embodiment.
- the power converter 501 that controls the driving of the three-phase AC induction motor 110 includes a rectifier circuit 102, a smoothing circuit 103, a DC voltage detector 304, a switching circuit controller 107, a switching circuit 109, a zero-phase voltage generator 512, and a zero-phase.
- a voltage regulator 514 and a zero-phase voltage injector 116 are included.
- the three-phase AC voltage output from the three-phase AC power source 500 is rectified by the rectifier circuit 102.
- the zero-phase voltage generator 512 is based on the voltage command 111 and the detected DC voltage 305 before injection of the zero-phase voltage, and the zero-phase voltage 113 for the purpose of improving the utilization rate of the voltage output from the switching circuit 109, and the switching circuit 109 A zero-phase voltage is generated for the purpose of reducing the number of switching operations. Two or more zero-phase voltages 113 may be generated as described above.
- the zero-phase voltage regulator 514 adjusts the zero-phase voltage 113 based on the time after the frequency of the voltage command 111 before the zero-phase voltage injection reaches a predetermined value. Instead of the frequency of the voltage command 111 before the zero-phase voltage injection, the norm of the voltage command 111 before the zero-phase voltage injection may be used.
- the time until the predetermined value or zero-phase voltage adjustment is completed may be preset in the inside or set from the outside, for example, the state of the power conversion device such as a DC voltage or a voltage command, or the state of the motor such as a current. It may vary depending on.
- the zero-phase voltage for the purpose of improving the utilization factor of the voltage output from the switching circuit 109 is changed to the voltage command 111 before the zero-phase voltage injection.
- the frequency is high, it is considered to inject a zero-phase voltage for the purpose of reducing the switching frequency of the switching circuit 109.
- FIG. 6 is an example of the voltage command frequency, zero phase voltage, and voltage command in the third embodiment.
- Times 601, 602, 603, and 604 are arbitrary points of time 600 after the frequency of the voltage command 111 before the zero-phase voltage injection reaches a predetermined value, and increase in the order described above.
- Zero phase voltages 605, 606, 607, and 608 are zero phase voltages at times 601, 602, 603, and 604, respectively.
- the post-zero-phase voltage injection voltage commands 609, 610, 611, and 612 are post-zero-phase voltage injection voltage commands at times 601, 602, 603, and 604, respectively.
- the voltage command is continuously changed by gradually changing the zero-phase voltage to be injected according to the time 600 after the frequency of the voltage command 111 before the zero-phase voltage injection reaches a predetermined value. be able to. Therefore, since the voltage applied to the three-phase AC induction motor 110 continuously changes, it is possible to suppress pulsation and jump of the current flowing through the three-phase AC induction motor 110.
- the zero-phase voltage is generated based on the DC voltage input to the switching circuit and the voltage command.
- the zero-phase voltage may be generated based on the detected or estimated current by detecting or estimating the current flowing through the motor.
- three or more zero-phase voltages may be generated, and each may be continuously changed by frequency or norm.
- the present invention is also applicable to a power converter that directly converts AC to AC, and a multiple power converter that includes a plurality of switching elements in one phase.
- this invention is not limited to the above-mentioned Example, Various modifications are included.
- the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
- a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment.
- Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit.
- Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor.
- Information such as programs, tables, and files for realizing each function can be stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.
- SSD Solid State Drive
- 100 Single-phase AC power supply, 101 ... Power conversion device, 102 ... Rectifier circuit, 103 ... smoothing circuit, 106 ... Voltage command after zero-phase voltage injection, 107... Switching circuit controller, 108... Switching circuit control signal, 109... Switching circuit, 110 ... three-phase AC induction motor, 111 ... Voltage command before zero-phase voltage injection, 112... Zero phase voltage generator, 113 ... Zero phase voltage, 114 ... Zero-phase voltage regulator, 115 ... Zero-phase voltage after adjustment, 116... Zero-phase voltage injector, 200: Voltage command frequency, 201, 202, 203, 204 ... frequency, 205, 206, 207, 208 ...
- Zero phase voltage regulator 600 ... time after the frequency of the voltage command 111 before the zero-phase voltage injection reaches a predetermined value, 601 602 603 604 time, 605, 606, 607, 608 ... Zero phase voltage, 609, 610, 611, 612 ... Voltage command after zero-phase voltage injection.
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Abstract
Description
101・・・電力変換装置、
102・・・整流回路、
103・・・平滑回路、
106・・・零相電圧注入後の電圧指令、
107・・・スイッチング回路制御器、
108・・・スイッチング回路制御信号、
109・・・スイッチング回路、
110・・・3相交流誘導電動機、
111・・・零相電圧注入前の電圧指令、
112・・・零相電圧生成器、
113・・・零相電圧、
114・・・零相電圧調整器、
115・・・調整後の零相電圧、
116・・・零相電圧注入器、
200・・・電圧指令周波数、
201,202,203,204・・・周波数、
205,206,207,208・・・零相電圧、
209,210,211,212・・・零相電圧注入後電圧指令、
300・・・3相交流永久磁石同期電動機、
304・・・直流電圧検出器、
305・・・検出直流電圧、
307・・・スイッチング回路制御器、
310・・・3相交流永久磁石同期電動機、
312・・・零相電圧生成器、
314・・・零相電圧調整器、
400・・・電圧指令ノルム、
401,402,403,404・・・ノルム、
405,406,407,408・・・零相電圧、
409,410,411,412・・・零相電圧注入後電圧指令、
500・・・3相交流電源、
501・・・電力変換装置、
512・・・零相電圧生成器、
514・・・零相電圧調整器、
600・・・零相電圧注入前の電圧指令111の周波数が所定値に到達後からの時間、
601,602,603,604・・・時間、
605,606,607,608・・・零相電圧、
609,610,611,612・・・零相電圧注入後電圧指令。
Claims (16)
- スイッチング回路の動作により交流電圧または直流電圧を任意の電圧に変換することで電動機を制御する電力変換装置において、
各相の電圧指令に注入する第一の変調の零相電圧を周波数または電圧または時間に依存させて変化させる制御回路を備えることを特徴とする電力変換装置。 - 請求項1記載の電力変換装置であって、
前記制御回路では、前記第一の変調の零相電圧を周波数または電圧または時間に依存させて増加または減少させることを特徴とする電力変換装置。 - 請求項1記載の電力変換装置であって、
前記制御回路では、前記第一の変調の零相電圧を周波数または電圧または時間に依存させて連続的に増加または減少させることを特徴とする電力変換装置。 - 請求項1記載の電力変換装置であって、
前記制御回路では、前記第一の変調の零相電圧を周波数または電圧または時間に依存させて連続的に減少させ、第二の変調の零相電圧を周波数または電圧または時間に依存させて連続的に増加させることを特徴とする電力変換装置。 - 請求項4記載の電力変換装置であって、
前記第一の変調および前記第二の変調は3相変調または2相変調のいずれかであることを特徴とする電力変換装置。 - 請求項1記載の電力変換装置であって、
さらに、零相電圧調整器を備え、
前記零相電圧調整器は、零相電圧注入前又は零相電圧注入後の電圧指令周波数または電圧指令ノルムまたは電圧指令周波数が所定値となってからの時間または指令電圧ノルムが所定値となってからの時間のいずれかに基づき零相電圧を調整することを特徴とする電力変換装置。 - 請求項1記載の電力変換装置であって、
前記第一の変調の零相電圧は、該電力変換装置が出力する電圧の利用率を向上させるような電圧であることを特徴とする電力変換装置。 - 請求項1記載の電力変換装置であって、
前記第一の変調の零相電圧は、前記スイッチング回路によるスイッチング回数を低減させるような電圧であることを特徴とする電力変換装置。 - スイッチング回路の動作により交流電圧または直流電圧を任意の電圧に変換することで電動機を制御する電力変換装置の制御方法において、
各相の電圧指令に注入する第一の変調の零相電圧を周波数または電圧または時間に依存させて変化させる制御工程を備えることを特徴とする電力変換装置の制御方法。 - 請求項7記載の電力変換装置の制御方法であって、
前記制御工程では、前記第一の変調の零相電圧を周波数または電圧または時間に依存させて増加または減少させることを特徴とする電力変換装置の制御方法。 - 請求項7記載の電力変換装置の制御方法であって、
前記制御工程では、前記第一の変調の零相電圧を周波数または電圧または時間に依存させて連続的に増加または減少させることを特徴とする電力変換装置の制御方法。 - 請求項7記載の電力変換装置の制御方法であって、
前記制御工程では、前記第一の変調の零相電圧を周波数または電圧または時間に依存させて連続的に増加させ、前記第二の変調の零相電圧を周波数または電圧に依存させて連続的に減少させることを特徴とする電力変換装置の制御方法。 - 請求項10記載の電力変換装置の制御方法であって、
前記第一の変調および前記第二の変調は3相変調または2相変調のいずれかであることを特徴とする電力変換装置の制御方法。 - 請求項7記載の電力変換装置の制御方法であって、
さらに、零相電圧調整工程を備え、
前記零相電圧調整工程では、零相電圧注入前又は零相電圧注入後の電圧指令周波数または電圧指令ノルムまたは電圧指令周波数が所定値となってからの時間または指令電圧ノルムが所定値となってからの時間のいずれかに基づき零相電圧を調整することを特徴とする電力変換装置の制御方法。 - 請求項9記載の電力変換装置の制御方法であって、
前記第一の変調の零相電圧は、該電力変換装置が出力する電圧の利用率を向上させるような電圧であることを特徴とする電力変換装置の制御方法。 - 請求項9記載の電力変換装置の制御方法であって、
前記第一の変調の零相電圧は、前記スイッチング回路によるスイッチング回数を低減させるような電圧であることを特徴とする電力変換装置の制御方法。
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EP14907873.5A EP3232561B1 (en) | 2014-12-08 | 2014-12-08 | Power conversion device and method for controlling power conversion device |
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JPWO2020208829A1 (ja) * | 2019-04-12 | 2020-10-15 | ||
WO2024075798A1 (ja) * | 2022-10-07 | 2024-04-11 | 日立Astemo株式会社 | インバータ制御装置、電動車両 |
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- 2014-12-08 EP EP14907873.5A patent/EP3232561B1/en active Active
- 2014-12-08 WO PCT/JP2014/082364 patent/WO2016092603A1/ja active Application Filing
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6585872B1 (ja) * | 2018-10-30 | 2019-10-02 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
WO2020089990A1 (ja) * | 2018-10-30 | 2020-05-07 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
JPWO2020208829A1 (ja) * | 2019-04-12 | 2020-10-15 | ||
WO2020208829A1 (ja) * | 2019-04-12 | 2020-10-15 | 株式会社日立産機システム | 電力変換装置、及び、その制御方法 |
TWI740413B (zh) * | 2019-04-12 | 2021-09-21 | 日商日立產機系統股份有限公司 | 電力轉換裝置及其控制方法 |
JP7112593B2 (ja) | 2019-04-12 | 2022-08-03 | 株式会社日立産機システム | 電力変換装置、及び、その制御方法 |
US11909341B2 (en) | 2019-04-12 | 2024-02-20 | Hitachi Industrial Equipment Systems Co., Ltd. | Power conversion device and method for controlling same |
WO2024075798A1 (ja) * | 2022-10-07 | 2024-04-11 | 日立Astemo株式会社 | インバータ制御装置、電動車両 |
Also Published As
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EP3232561B1 (en) | 2021-06-23 |
JPWO2016092603A1 (ja) | 2017-06-08 |
CN107112936A (zh) | 2017-08-29 |
EP3232561A1 (en) | 2017-10-18 |
JP6518693B2 (ja) | 2019-05-22 |
EP3232561A4 (en) | 2018-08-29 |
CN107112936B (zh) | 2019-08-16 |
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