Load and supply voltage sensitive speed control system for DC br

Details Load and supply voltage sensitive speed control system for DC br Load and supply voltage sensitive speed control system for DC br

1995-02-21

1996-10-08

Wysocki, Jonathan

Electricity: motive power systems

Switched reluctance motor commutation control

318439, 388815, H02P 700

Patent

active

055634800

ABSTRACT:
A speed control system for brushless DC motors which maintains the rotational speed of the motor substantially constant even when the motor load and/or supply voltage fluctuates. Furthermore, by including a negative-resistance temperature coefficient thermistor in the speed control system, the rotational speed of the brushless DC motor may be varied as a function of ambient temperature. Thus, if the brushless DC motor is part of a motor fan and there is an increase in the ambient temperature, the rotational speed of the motor will increase to provide additional cooling. In contrast, if the ambient temperature decreases, the rotational speed of the brushless DC motor will be reduced thereby resulting in quieter operation of the motor.

REFERENCES:
patent: 2898533 (1959-08-01), Beckett
patent: 3777234 (1973-12-01), Luger
patent: 3986086 (1976-10-01), Muller
patent: 4070606 (1978-01-01), Morozumi et al.
patent: 4227127 (1980-10-01), Fukaya et al.
patent: 4234835 (1980-11-01), Ota et al.
patent: 4345189 (1982-08-01), Kukaya et al.
patent: 4450392 (1984-05-01), Gaslonde
patent: 4477752 (1984-10-01), Nakano et al.
patent: 4626753 (1986-12-01), Letterman
patent: 4722669 (1988-02-01), Kundert
patent: 4742281 (1988-05-01), Nakano et al.
patent: 4806832 (1989-02-01), Muller
patent: 4831312 (1989-05-01), Okazaki et al.
patent: 4856078 (1989-08-01), Konopka
patent: 4879497 (1989-11-01), Meyer et al.
patent: 4949393 (1990-08-01), Ohmori et al.
patent: 4955431 (1990-09-01), Saur et al.
patent: 5041335 (1991-05-01), Anton
patent: 5043642 (1991-08-01), Ohi

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