Motor drive system

摘要

A motor drive system includes a first interlock mechanism configured to be activated in response to transition to an operable state of an interruption device, to open an open/close device, a second interlock mechanism configured to be activated in response to transition to an openable state of a case containing a power control unit, to open the open/close device, and a control device. The control device is configured to perform, when the first interlock mechanism is activated, a first process of opening the open/close device after shutting down the power control unit, and to perform, when the second interlock mechanism is activated, a second process of opening the open/close device while driving the power control unit, instead of the first process, depending on a counter electromotive voltage generated by a motor.

主权项

1. A motor drive system comprising:
a rechargeable power storage device; a power control unit configured to drive a motor by using electric power supplied from said power storage device; an open/close device disposed on a power line connecting said power storage device to said power control unit; a first interlock mechanism configured to be activated to open said open/close device in response to transition to an operable state of an interruption device for interrupting an output of said power storage device; a second interlock mechanism configured to be activated to open said open/close device in response to transition to an openable state of a case containing said power control unit; and a control device for controlling said power control unit and said first and second interlock mechanisms, said power control unit including
an inverter for converting the electric power from said power storage device to electric power for driving said motor, anda capacitor connected to a terminal of said inverter on the side of said power storage device, said control device being configured to perform, when said first interlock mechanism is activated, a first process of opening said open/close device after shutting down said power control unit, and to perform, when said second interlock mechanism is activated, a second process of opening said open/close device while driving said power control unit, instead of said first process, depending on a counter electromotive voltage generated by said motor.