| 简介 |
PROBLEM TO BE SOLVED : To provide a washing machine which protects a motor, a motor drive circuit and a power supply circuit by performing correction control so that wrong voltages are not applied to respective three phases of the motor and the motor does not get into a locked state, when performing inversion control of a tub.SOLUTION : A washing machine includes an inverter circuit 3, a three-phase motor 1, rotor position detection means 11a, interruption signal generation means 21, current detection means 16 and control means 10. The control means 10 performs correction control in such a manner that, when starting the motor 1, after outputting a voltage corresponding to rotor position information from the rotor position detection means 11a to the motor 1, the rotor position information is detected from the rotor position detection means 11a again after predetermined time, and the voltage corresponding to the information is output again to the motor 1. Thus, the washing machine with high reliability and safety can be provided, which avoids a lock state by restarting after the predetermined time, protects the motor and a motor drive circuit, and can continue an operation.SELECTED DRAWING : Figure 1COPYRIGHT : (C)2017, JPO&INPIT |
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