System and method for controlling brushless permanent magnet mot

Details System and method for controlling brushless permanent magnet mot System and method for controlling brushless permanent magnet mot

1998-03-09

1999-12-14

Sircus, Brian

Electricity: motive power systems

Induction motor systems

Power-factor control

318809, 318438, H02P 124

Patent

active

060022345

ABSTRACT:
A system and method of calculating optimum angle advance for brushless permanent magnet motors. The calculations are based on the motor and drive parameters, and on operational variables including the motor speed and the motor load. The angle advance is calculated dynamically as a function of motor speed and where reluctance torque is involved, as a function of load current as well. For a given motor, the advance is calculated according to the speed and load together with the motor and drive parameters according to one or more angle advance equations.

REFERENCES:
patent: 4546293 (1985-10-01), Peterson et al.
patent: 4649331 (1987-03-01), Jahns
patent: 4651068 (1987-03-01), Meshkat-Razavi
patent: 4814677 (1989-03-01), Plunkett
patent: 5038092 (1991-08-01), Asano et al.
patent: 5097189 (1992-03-01), Ito et al.
patent: 5583411 (1996-12-01), Kusano et al.

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