JP7415969B2 - 回転電機制御システム - Google Patents
回転電機制御システム Download PDFInfo
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- JP7415969B2 JP7415969B2 JP2021017730A JP2021017730A JP7415969B2 JP 7415969 B2 JP7415969 B2 JP 7415969B2 JP 2021017730 A JP2021017730 A JP 2021017730A JP 2021017730 A JP2021017730 A JP 2021017730A JP 7415969 B2 JP7415969 B2 JP 7415969B2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
-
- 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
- H02M7/505—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 using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/521—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
-
- 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
- H02M7/505—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 using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/525—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency
- H02M7/527—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency by pulse width modulation
-
- 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
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/025—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being a power interruption
-
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor
- H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an AC motor by short-circuit or resistive braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/52—Drive Train control parameters related to converters
- B60L2240/526—Operating parameters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Inverter Devices (AREA)
- Control Of Ac Motors In General (AREA)
Description
Mi_inv2=Va_inv2/E2=Va_inv2/E ・・・(2)
Mi_sys =(Va_inv1+Va_inv2)/(E1+E2)
=(Va_inv1+Va_inv2)/2E ・・・(3)
Claims (4)
- 互いに独立した複数相のオープン巻線を有する回転電機を駆動制御する回転電機制御システムであって、
前記オープン巻線の一端側に接続された第1インバータと、
前記オープン巻線の他端側に接続された第2インバータと、
前記第1インバータが接続された第1直流電源と、
前記第2インバータが接続された第2直流電源と、
前記第1直流電源に並列接続された第1平滑コンデンサと、
前記第2直流電源に並列接続された第2平滑コンデンサと、
前記第1インバータ及び前記第1平滑コンデンサと前記第1直流電源との電気的接続を断接する第1コンタクタと、
前記第2インバータ及び前記第2平滑コンデンサと前記第2直流電源との電気的接続を断接する第2コンタクタと、
前記第1コンタクタ及び前記第2コンタクタのそれぞれを制御すると共に、前記第1インバータ及び前記第2インバータのそれぞれを、互いに独立して制御可能な制御部と、を備え、
前記第1インバータ及び前記第2インバータは、それぞれ交流1相分のアームが上段側スイッチング素子と下段側スイッチング素子との直列回路により構成され、
前記制御部は、前記第1インバータ及び前記第2インバータをそれぞれ、全ての前記上段側スイッチング素子をオフ状態とし全ての前記下段側スイッチング素子をオン状態とする、又は、全ての前記上段側スイッチング素子をオン状態とし全ての前記下段側スイッチング素子をオフ状態とするアクティブショートサーキット制御、及び、複数相のスイッチング素子の全てをオフ状態とするシャットダウン制御、により制御可能であり、
前記第1直流電源の電圧変動範囲よりも大きい値に設定された第1上限電圧と、前記第1直流電源の電圧変動範囲よりも小さい値に設定された第1下限電圧と、前記第2直流電源の電圧変動範囲よりも大きい値に設定された第2上限電圧と、前記第2直流電源の電圧変動範囲よりも小さい値に設定された第2下限電圧と、を用いて、
前記制御部は、
前記第1平滑コンデンサの両端電圧が前記第1上限電圧よりも高い、又は前記第1下限電圧よりも低く、且つ、前記第1直流電源を流れる電流が予め規定された第1下限電流以下である場合に、前記第1コンタクタが開状態であると判定し、
前記第2平滑コンデンサの両端電圧が前記第2上限電圧よりも高い、又は前記第2下限電圧よりも低く、且つ、前記第2直流電源を流れる電流が予め規定された第2下限電流以下である場合に、前記第2コンタクタが開状態であると判定し、
前記第1コンタクタ及び前記第2コンタクタの内、開状態であると判定した一方のコンタクタを故障コンタクタ、他方の前記コンタクタを正常コンタクタとし、
前記回転電機の回転速度が予め規定された速度しきい値以上の状態では、前記第1インバータ及び前記第2インバータの双方を、シャットダウン制御により制御すると共に、前記第1コンタクタ及び前記第2コンタクタの双方を開状態とし、
前記回転電機の回転速度が前記速度しきい値未満となった後、前記故障コンタクタに接続されたインバータである故障側インバータを前記アクティブショートサーキット制御により制御し、前記正常コンタクタを開状態に維持すると共に、当該正常コンタクタに接続されたインバータである正常側インバータを当該正常側インバータに接続された平滑コンデンサである正常側平滑コンデンサの放電用トルクで駆動し、
前記正常側平滑コンデンサの両端電圧の上昇が解消された後、前記正常コンタクタを閉状態に制御すると共に、前記正常側インバータにより前記回転電機を駆動制御する、回転電機制御システム。 - 前記制御部は、前記回転電機の回転速度が予め設定された最高回転速度である状態であって、前記第1コンタクタ及び前記第2コンタクタの一方が開状態であり他方が閉状態である状態で、前記シャットダウン制御を実行した場合に、開状態である前記コンタクタに接続された平滑コンデンサの両端電圧が前記インバータの耐圧以下である場合には、前記第1コンタクタ及び前記第2コンタクタの一方が前記故障コンタクタであると判定した場合に、前記回転電機の回転速度が規定の速度しきい値以上の状態であっても、他方の前記正常コンタクタを開状態とせずに閉状態に維持する、請求項1に記載の回転電機制御システム。
- 前記回転電機は、車両に搭載されて当該車両の車輪を駆動する駆動力源であり、
前記制御部は、前記第1コンタクタ及び前記第2コンタクタの一方が開状態であると判定した場合、前記回転電機の出力可能なトルク及び回転速度を規定範囲内に制限すると共に、前記車両の運転者に対して警告を報知する、請求項1又は2に記載の回転電機制御システム。 - 前記放電用トルクは、最大トルクの1%以下である、請求項1から3の何れか一項に記載の回転電機制御システム。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021017730A JP7415969B2 (ja) | 2021-02-05 | 2021-02-05 | 回転電機制御システム |
| EP22749740.1A EP4220938B1 (en) | 2021-02-05 | 2022-02-02 | Rotary electric machine control system |
| PCT/JP2022/004060 WO2022168869A1 (ja) | 2021-02-05 | 2022-02-02 | 回転電機制御システム |
| US18/030,921 US12249937B2 (en) | 2021-02-05 | 2022-02-02 | Rotating electrical machine control system |
| CN202280008139.3A CN116601861A (zh) | 2021-02-05 | 2022-02-02 | 旋转电机控制系统 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021017730A JP7415969B2 (ja) | 2021-02-05 | 2021-02-05 | 回転電機制御システム |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2022120678A JP2022120678A (ja) | 2022-08-18 |
| JP7415969B2 true JP7415969B2 (ja) | 2024-01-17 |
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| JP2021017730A Active JP7415969B2 (ja) | 2021-02-05 | 2021-02-05 | 回転電機制御システム |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12249937B2 (ja) |
| EP (1) | EP4220938B1 (ja) |
| JP (1) | JP7415969B2 (ja) |
| CN (1) | CN116601861A (ja) |
| WO (1) | WO2022168869A1 (ja) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11712967B2 (en) * | 2021-07-29 | 2023-08-01 | Rivian Ip Holdings, Llc | Torque-equalizing fault response for electric vehicle |
| WO2025134669A1 (ja) * | 2023-12-20 | 2025-06-26 | 株式会社デンソー | 回転電機の制御装置、回転電機の制御方法及び回転電機の制御プログラム |
| WO2025142283A1 (ja) * | 2023-12-26 | 2025-07-03 | 株式会社デンソー | 回転電機の制御装置、回転電機の制御プログラム、及び回転電機の制御方法 |
| WO2025142363A1 (ja) * | 2023-12-26 | 2025-07-03 | 株式会社デンソー | 回転電機の制御装置、プログラム、及び回転電機の制御方法 |
| WO2025142362A1 (ja) * | 2023-12-26 | 2025-07-03 | 株式会社デンソー | 回転電機の制御装置、プログラム、及び回転電機の制御方法 |
| WO2025142284A1 (ja) * | 2023-12-26 | 2025-07-03 | 株式会社デンソー | 回転電機の制御装置、回転電機の制御プログラム、及び回転電機の制御方法 |
| WO2025142378A1 (ja) * | 2023-12-27 | 2025-07-03 | 株式会社デンソー | 回転電機の制御装置、プログラム、及び回転電機の制御方法 |
| WO2025164236A1 (ja) * | 2024-01-30 | 2025-08-07 | 株式会社デンソー | 電力変換装置 |
| JP2025182399A (ja) * | 2024-06-03 | 2025-12-15 | 株式会社デンソー | 回転電機システムの制御装置、プログラム、及び回転電機システムの制御方法 |
| TWI901425B (zh) * | 2024-11-04 | 2025-10-11 | 亞福儲能股份有限公司 | 用於驅動馬達的驅動裝置及其操作方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016123223A (ja) | 2014-12-25 | 2016-07-07 | 株式会社デンソー | 電力変換装置 |
| JP2016181947A (ja) | 2015-03-23 | 2016-10-13 | 株式会社日本自動車部品総合研究所 | 電力変換装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014192950A (ja) | 2013-03-26 | 2014-10-06 | Denso Corp | 電力変換装置 |
| KR102227848B1 (ko) * | 2014-10-23 | 2021-03-15 | 현대모비스 주식회사 | 하이브리드 전기 차량의 구동 시스템 및 이 시스템의 pwm 캐리어 신호의 위상 제어 방법 |
| US10840845B2 (en) * | 2017-03-22 | 2020-11-17 | Aisin Aw Co., Ltd. | Vehicle drive control device |
| CN111034024B (zh) * | 2017-09-13 | 2023-09-05 | 日本电产株式会社 | 电力转换装置、马达模块以及电动助力转向装置 |
| DE112019006013T5 (de) * | 2018-12-04 | 2021-08-19 | Nidec Corporation | Leistungswandler, antrieb und servolenkvorichtung |
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Patent Citations (2)
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|---|---|---|---|---|
| JP2016123223A (ja) | 2014-12-25 | 2016-07-07 | 株式会社デンソー | 電力変換装置 |
| JP2016181947A (ja) | 2015-03-23 | 2016-10-13 | 株式会社日本自動車部品総合研究所 | 電力変換装置 |
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| US12249937B2 (en) | 2025-03-11 |
| EP4220938A4 (en) | 2024-04-03 |
| CN116601861A (zh) | 2023-08-15 |
| WO2022168869A1 (ja) | 2022-08-11 |
| EP4220938B1 (en) | 2025-02-12 |
| EP4220938A1 (en) | 2023-08-02 |
| JP2022120678A (ja) | 2022-08-18 |
| US20230378896A1 (en) | 2023-11-23 |
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