Flux-weakening regime operation of an interior permanent magnet

Details Flux-weakening regime operation of an interior permanent magnet Flux-weakening regime operation of an interior permanent magnet

1985-05-13

1987-03-10

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318723, 318806, H02P 540

Patent

active

046493310

ABSTRACT:
The operation of an interior permanent magnet synchronous motor is extended to the constant horsepower regime by causing the stator current vector to follow the voltage-limit ellipse in the counter-clockwise direction. The error between commanded stator current and actual stator current is determined to signal a saturation of the inverter and the commanded stator current is modified to reduce the error.

REFERENCES:
patent: 3775649 (1973-11-01), Bayer et al.
patent: 4295085 (1981-10-01), Lafuze
patent: 4361791 (1982-11-01), Plunkett
patent: 4458192 (1984-07-01), Sakamoto et al.
patent: 4460860 (1984-07-01), Schwesig et al.
patent: 4469970 (1984-09-01), Neumann
patent: 4472651 (1984-09-01), Jones
patent: 4506181 (1985-03-01), Jones et al.
Leonhard, W., Control of Electrical Drives, Springer-Verlag, 1985, pp. 260-270.
Lajoie-Mazenc et al., Feeding Permanent Magnet Machines by a Transistorized Inverter, PCI Motor Converence Proceedings, Sep. 1983, pp. 558-570.

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