To make it possible to reduce a circulating current caused by an abnormality in a current sensor when performing external charging using a neutral point charging method.SOLUTION: A vehicle power supply apparatus includes a power conversion device that includes a switching element and a current sensor for each phase of an electric motor for driving. A control device controls the power conversion device so that power supplied from an external power supply via a neutral point of the electric motor is boosted and then supplied to a battery during battery charging. The control device performs feedback control to control the current in each phase of the electric motor by controlling the switching element so that an input current from the external power supply and an output current to the battery are equal during charging. The control device sets the upper limit of the current in each phase on the basis of the maximum value of the input current during charging and limits the current in each phase, which is controlled by the feedback control so that the set upper limit is not exceeded.SELECTED DRAWING: Figure 3
【課題】中性点充電方式を用いて外部充電を行う際に、電流センサの異常に起因する循環電流を低減できるようにする。【解決手段】車両電源装置は、走行用の電動機の相毎にスイッチング素子と電流センサとを含む電力変換装置を含む。制御装置は、バッテリの充電中に、電動機の中性点を介して外部電源から供給される電力が昇圧された後にバッテリに供給されるように電力変換装置を制御する。制御装置は、充電中に、外部電源からの入力電流とバッテリへの出力電流とが等しくなるようにスイッチング素子の制御によって電動機の各相電流を制御するフィードバック制御を実行する。そして、制御装置は、充電中に入力電流の最大値に基づいて各相電流の上限値を設定し、設定された上限値を超えないように、フィードバック制御によって制御される各相電流を制限する。【選択図】図3
VEHICLE POWER SUPPLY APPARATUS
車両電源装置
2024-08-19
Patent
Electronic Resource
Japanese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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 , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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