| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor control device which reduces temperature rise of an arm, which avoids enlargement of a heat radiator, which reduces current made to flow through a motor in a section not contributing to a torque, and which achieves higher efficiency of the motor control device.SOLUTION: A motor control device includes: an inverter connected to a three phase synchronous motor; and control means in which an upper arm two-phase modulation or a lower arm two-phase modulation is performed and a PWM signal is stopped in a fixed section around current zero-cross of the three-phase synchronous motor. |
