Current source inverter bed induction motor drive

Details Current source inverter bed induction motor drive Current source inverter bed induction motor drive

1982-08-02

1984-06-19

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318807, H02P 540

Patent

active

044555229

ABSTRACT:
A drive system for a polyphase induction motor for extending the range of high frequency operation has two current source inverters connected to the polyphase motor to supply power to the motor. Motor speed and motor load are sensed and a circuit responsive to increasing motor speed and decreasing motor loads advances the firing pulses of one inverter while delaying the firing pulses of the other inverter. The advance in firing of one inverter and the delay in firing the other, reduces the effective current supplied to the motor while not decreasing the current available in each inverter for commutation.

REFERENCES:
patent: 3800211 (1974-03-01), Tracy
patent: 4314190 (1982-02-01), Walker et al.
patent: 4349772 (1982-09-01), Weiss
6-Phase Induction Motors for Current-Source Inverter Drives, by E. Andresen and K. Bieniek, IEEE Conf. Record, Industry Applications Soc., 1981, pp. 607-613.
Cho et al., "Novel Six-Step and Twelve-Step Current-Source Inverters with DC Side Commutation and Energy Rebound", IEEE Transactions on Industry Applications, vol. 1A-17, No. 5, Sep./Oct. 1981, pp. 524-532.

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