Apparatus for controlling blower motor of automobile air-conditi

Details Apparatus for controlling blower motor of automobile air-conditi Apparatus for controlling blower motor of automobile air-conditi

1990-04-25

1992-11-10

Wysocki, A. Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

318811, 388904, H02P 500

Patent

active

051627094

ABSTRACT:
An apparatus for controlling a blower motor composed of a brushless motor is operative to control the blower motor, in the pulse width modulation (PWM) mode, with a number of pulses which are inversely proportional to a setting speed so as to reduce the motor operation noise and power consumption. An appropriate selection of the waveform to be supplied to the blower motor or the disturbance of the exciting timing of an exciting coil of the blower motor is effective to prevent the occurrence of a resonance phenomenon caused by vibrations produced by the blower motor.

REFERENCES:
patent: 4212056 (1980-07-01), Kitamura et al.
patent: 4310791 (1982-01-01), Akamatsu
patent: 4312518 (1982-03-01), Akamatsu
patent: 4588934 (1986-05-01), Suzuki et al.
patent: 4651068 (1987-03-01), Meshkat-Razavi
patent: 4670696 (1987-06-01), Byrne et al.
patent: 4926104 (1990-05-01), King et al.

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