Adjustable speed drive for residential applications

Details Adjustable speed drive for residential applications Adjustable speed drive for residential applications

1994-03-18

1995-09-05

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, 388805, H02K 2300

Patent

active

054481414

ABSTRACT:
The present invention relates to a method and apparatus for controlling the speed of an electronically commutated motor. Such motors typically include a rotor, a stator coil, and an electronic commutator for controlling electrical power flow from an electrical power source of predetermined frequency to the stator coil. The invention includes the steps of generating a switch control signal responsive to a position of the rotor; generating a phase gating signal from the electrical power source of predetermined frequency, the phase gating signal having twice the predetermined frequency and having transitions in timed relation to the zero crossings of the electrical power source; varying the timed relation of the phase gating signal in accordance with an operational parameter desired for the electronically commutated motor; generating a phase controlled switch signal which is responsive to the phase gating signal and the switch control signals; and applying the phase controlled switch signal to the electronic commutator to control the electronic commutator, thereby controlling the speed of the electronically commutated motor.

REFERENCES:
patent: 4015182 (1977-03-01), Erdman
patent: 4167691 (1979-09-01), Sorensen et al.
patent: 4556827 (1985-12-01), Erdman
patent: 4668898 (1987-05-01), Harms et al.
patent: 4682093 (1987-07-01), Murphy et al.
patent: 4859921 (1989-08-01), Archer
patent: 4959596 (1990-09-01), MacMinn et al.
patent: 4972134 (1990-11-01), Getz et al.
patent: 5076076 (1991-12-01), Payne
patent: 5125067 (1992-06-01), Erdman
patent: 5221881 (1993-06-01), Cameron

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