INVERTER CONTROL DEVICE, ELECTRIC VEHICLE SYSTEM

• Main Authors: SASAZAWA NORIYOSHI, TANAKA TAKAHIRO, HARA TAKAFUMI, YASUJIMA TOSHIYUKI, KADOTA KEIJI, KISHIMOTO EIGO
• Format: Patent
• Language: English; Japanese
• Published: 05.09.2022
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To suppress deviation between detection results of an output current of an inverter and an actual current.SOLUTION: A current detection unit 7 detects an alternating current flowing through a motor 2 that is a three-phase synchronous motor. An inverter control device 1 controls an inverter 3 connected to the motor 2 based on a current detection value based on detection results of the alternating current by the current detection unit 7 and a predetermined current command value. The inverter control device 1 corrects the current detection value based on a d-axis voltage and a q-axis voltage based on a d-axis current command and a q-axis current command, a d-axis inductance Ld and a q-axis inductance Lq of the motor 2, and a delay time τ of a filter 72 that is a filter element of the current detection unit 7.SELECTED DRAWING: Figure 1 【課題】インバータの出力電流の検出結果と実電流との乖離を抑制する。【解決手段】電流検出部７は、三相同期電動機であるモータ２に流れる交流電流を検出する。インバータ制御装置１は、電流検出部７による交流電流の検出結果に基づく電流検出値と、所定の電流指令値とに基づいて、モータ２と接続されたインバータ３を制御する。インバータ制御装置１は、ｄ軸電流指令およびｑ軸電流指令に基づくｄ軸電圧およびｑ軸電圧と、モータ２のｄ軸インダクタンスＬｄおよびｑ軸インダクタンスＬｑと、電流検出部７が有するフィルタ要素であるフィルタ７２の遅れ時間τとに基づいて、電流検出値を補正する。【選択図】図１