Patents Assigned to HitachiI Automotive Systems, Ltd.
  • MOTOR DRIVE DEVICE, CONTROLLER, AND ELECTRIC VEHICLE SYSTEM
    Publication number: 20210257946
    Abstract: Stable current control is performed even at the time of occurrence of disturbance, while the steadily occurring current pulsation is suppressed. A motor drive device 100 includes a power conversion circuit 103 that drives an alternating-current motor 101, and a controller 102 that controls the power conversion circuit 103. The controller 102 includes a voltage command calculation unit 108, a control state judgement unit 112, and a control gain change unit 113.
    Type: Application
    Filed: March 14, 2019
    Publication date: August 19, 2021
    Applicant: HitachiI Automotive Systems, Ltd.
    Inventors: Noriya NAKAO, Kazuaki TOBARI, Fumikazu TAKAHASHI, Shingo NISHIGUCHI