Compressor drive system

Details Compressor drive system Compressor drive system

1988-07-20

1990-01-16

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

622284, 318806, 318807, H02P 528

Patent

active

048934798

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

REFERENCES:
patent: 3409817 (1968-11-01), Gillett
patent: 3704403 (1972-11-01), Gillett
patent: 3748556 (1973-07-01), Gillett
patent: 3919610 (1975-11-01), Gillett
patent: 4441062 (1984-04-01), Evans et al.
patent: 4447867 (1984-05-01), Evans et al.
patent: 4458199 (1984-07-01), Evans et al.
patent: 4563624 (1986-01-01), Yu
patent: 4618810 (1986-10-01), Hagerman et al.
patent: 4689543 (1987-08-01), Hucker

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