Fault-tolerant variable speed induction motor drive

Details Fault-tolerant variable speed induction motor drive Fault-tolerant variable speed induction motor drive

1995-03-27

1996-10-22

Martin, David S.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318806, 318807, H02P 534

Patent

active

055680348

ABSTRACT:
A drive arrangement for a fault tolerant variable speed induction motor provides a pair of current (torque and flux) command signals. The current command signals are converted to a three-phase output with sinusoidally varying signals. The three-phase output is modified to enable the motor to operate in the event one of the motor phases is open or disconnected. The modified three-phase output is used to provide first, second and third gate logic signals which are used for driving the motor.

REFERENCES:
patent: 3609507 (1971-09-01), Beck
patent: 4367522 (1983-01-01), Forstbauer et al.
patent: 4418308 (1983-11-01), Bose
patent: 4453116 (1984-06-01), Bose
patent: 4546423 (1985-10-01), Seki
patent: 4800327 (1989-01-01), Fujioka et al.
patent: 4999561 (1991-03-01), Kaga et al.
patent: 5006778 (1991-04-01), Bashark

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