CONTROLLER OF ELECTRIC MOTOR AND ELECTRIC VEHICLE USING THE SAME

• Main Authors: ARAKI TAKAHIRO, MIYAZAKI HIDEKI, MITSUI TOSHISADA
• Format: Patent
• Language: English; Japanese
• Published: 01.06.2017
• 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

PROBLEM TO BE SOLVED: To reduce detection error of zero-phase current.SOLUTION: The controller of electric motor having windings which are independently wired for each phase, includes a control unit that controls the voltage applied the electric motor based on torque command value. The control unit is configured to have a first period in which a voltage pulse of zero-phase is output for outputting a zero-phase voltage to reduce a zero-phase current, which is calculated based on AC current of each phase, and a second period in which the current of each phase flowing to the electric motor is detected. The first period and the second period are not overlapped with each other.SELECTED DRAWING: Figure 4 【課題】本発明の目的は、零相電流の検出誤差を低減することである。【解決手段】巻線が相毎に独立して結線された電動機の制御装置であって、トルク指令値に基づいて前記電動機へ印加する電圧を制御する制御部を備え、前記制御部は、各相の交流電流に基づいて求められる零相電流を低減する零相電圧を出力するための零相電圧パルスが出力される第１期間と、前記電動機に流れる各相の電流を検出する第２期間と、を設け、前記第１期間と第２期間は、互いに重ならない電動機の制御装置。【選択図】 図４