Control apparatus for controlling motor of air conditioner

Details Control apparatus for controlling motor of air conditioner Control apparatus for controlling motor of air conditioner

1995-04-10

1997-09-02

Martin, David S.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318811, 363 37, 363132, H02P 534

Patent

active

056636270

ABSTRACT:
A control apparatus for controlling a motor of an air conditioner includes a converter, having switching for improving an input power factor, for converting an AC power to a DC power and an inverter for converting the DC power supplied from the converter to the AC power and supplying to a compressor. The output DC voltage of the converter is detected by a DC voltage detecting circuit. An input alternating current is detected by a current detecting circuit. A microcomputer for controlling the inverter calculates a current command from data stored on the basis of the detected voltage. The detected current is compared with the current command, an ON percentage of a PWM signal to control the switching is obtained, and the PWM signal is generated.

REFERENCES:
patent: 4417193 (1983-11-01), Hirata
patent: 4876637 (1989-10-01), Mose et al.
patent: 4996470 (1991-02-01), Rowan et al.
patent: 5047909 (1991-09-01), Hosoda
patent: 5070290 (1991-12-01), Iwasa et al.
patent: 5225712 (1993-07-01), Erdman
patent: 5373195 (1994-12-01), De Donker et al.
patent: 5460244 (1995-10-01), Tanahashi

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