| 摘要 |
A compressor drive system that includes a thermostat (10) producing a signal indicating the measured air temperature, a modulation control circuit (24, 28) connected to the thermostat (10) to produce a motor drive signal from the temperature signal and which is output to a motor drive switching bridge circuit (50). The motor drive switching bridge circuit (50) is connected to a rectifier (38) that converts single phase alternating current to direct current. The switching bridge (50) uses the motor drive signal from the modulation control circuit (24, 28) and the rectifier output to produce multiphase power including a speed control signal imposed on the power for regulating speed. A motor (54) connected to drive a compressor (56) is included. The motor (54) is powered by the motor drive switching bridge circuit multiphase power output. The speed of the motor (54) is controlled as a function of the temperature signal. |
