Air conditioner and inverter driving circuit therefor

Details Air conditioner and inverter driving circuit therefor Air conditioner and inverter driving circuit therefor

1996-11-21

1998-06-09

Martin, David S.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318807, 363 37, 363 40, H02P 534

Patent

active

057640220

ABSTRACT:
In an inverter driving circuit and an air conditioner having the same, the circuit elements constituting the inverter driving circuit are arranged and connected through wirings along a power supply path so that those circuit elements and wirings which are located at the front stage of a noise filter are spatially separated from those circuit elements and wirings which are located at the rear stage of the noise filter. A power source of a controller for the inverter driving circuit is supplied with an alternating power from a neutral point and one of three phases (R,S,T) of the noise filter, and a high-frequency noise occurring in a transistor module is intercepted by a smoothing circuit and a rectifying circuit, so that the noise contamination into the controller can be prevented. The voltage to be supplied to the controller may be a low voltage.

REFERENCES:
patent: 4682094 (1987-07-01), Kuroiwa
patent: 4849950 (1989-07-01), Sugiura et al.
patent: 4879639 (1989-11-01), Tsukahara
patent: 4894763 (1990-01-01), Ngo
patent: 5047909 (1991-09-01), Hosoda
patent: 5146148 (1992-09-01), Voet
patent: 5206575 (1993-04-01), Nakamura et al.
Patent Abstracts of Japan, Publication No. 05300757, Published Nov. 12, 1993.
Patent Abstracts of Japan, Publication No. 04079773, Published Mar. 13, 1992.
European Search Report.

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