Patent ID: 9543877
Date: 2017-01-10
CPC Classifications: H02P

Claim:
1. An apparatus for controlling a switched reluctance motor with use of a power conversion circuit, the apparatus comprising: a command voltage setter configured to set a command voltage for a coil of the motor, the command voltage being set to change gradually during either or both of a ramp-up period and a ramp-down period of the command voltage; and a voltage controller configured to control an applied voltage to the coil to the command voltage set by the command voltage setter by operating the power conversion circuit, wherein the command voltage setter is further configured to set the command voltage such that the command voltage has a continuous waveform for one cycle of electric angle of the motor and such that a zero voltage waveform is included as part of the waveform for one cycle of electric angle of the motor, and the command voltage setter is still further configured to perform all of: the first to fifth processes are to be performed during one cycle of electric angle of the motor in a sequential order of the first, third, fourth, second, and fifth proceeses, the first and third predetermined values are the same positive value, the first and third predetermined voltages are at the same value, the fourth and fifth predetermined values are the same value, the sixth and second predetermined values are the same positive value, and the fourth and second predetermined voltages are at the same value.