Torque control system for AC motor

Details Torque control system for AC motor Torque control system for AC motor

1996-10-25

1997-11-11

Cabeca, John W.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318801, 318438, 318432, H02P 528

Patent

active

056868073

ABSTRACT:
A motor torque control system has an inverter for converting a DC voltage from a battery into an AC voltage to energize an AC motor based on a command amplitude value. An input electric power calculating unit calculates an input electric power supplied from the battery based on a current and a voltage from the battery. A target electric power calculating unit calculates a target electric power to be supplied to the AC motor based on the rotational speed of the AC motor and a command torque value indicative of a torque to be produced by the AC motor. A PI control unit produces a control signal from the difference between the input electric power and the target electric power, and a PWM control unit controls the command amplitude value based on the control signal.

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