Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1991-12-19
1996-07-09
Cabeca, John W.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318254, 318439, 388806, H02P 506
Patent
active
055347630
ABSTRACT:
A method of controlling the commutation of power to an electric motor back EMF sensing or Hall effect sensors is disclosed. At least part of the current waveform is sensed in at least one motor winding and is used to establish information relating to the appropriate commutation pattern required to commutate power to the motor and control motor parameters e.g. motor speed.
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Gianni Christian J. W.
Williams John J. A.
Cabeca John W.
Fisher & Paykel Limited
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