Control system for induction motor-driven car

Details Control system for induction motor-driven car Control system for induction motor-driven car

1980-07-03

1982-02-09

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318799, 318801, H02P 540

Patent

active

043152031

ABSTRACT:
A control system for an electric car driven by an induction motor which is supplied with electric power of a variable frequency and a variable voltage from an inverter comprises means for detecting the car speed, means for setting a slip frequency of the motor, a frequency command generator, control means for controlling the output frequency of the power converter in accordance with the frequency command and controlling the output voltage of the power converter, a current command generator, and a voltage command generator. The output voltage of the power converter is controlled in accordance with selected one of the current command and the voltage command while being limited by the other command.

REFERENCES:
patent: 3819992 (1974-06-01), Opal et al.
patent: 4009427 (1977-02-01), Takahashi

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