Open loop motor control with both voltage and current...

Details Open loop motor control with both voltage and current... Open loop motor control with both voltage and current...

H - Electricity

02

P

318/98

H02P 27/08 (2006.01) H02P 25/02 (2006.01)

Patent

CA 1301830

Abstract of the Disclosure An open-loop pulse width modulation (PWM) motor control for an induction motor includes a voltage regulator loop which ii wrapped around a current regulator. When a load is suddenly encountered by the motor, voltage drops at the output of the current regulator. This is sensed and fed back to a voltage regulator and to a current limiter which then adjust the input signal to the current regulator to prevent an overcurrent that will trip a circuit protection device. The voltage regulator and current limiter may be implemented in either analog or digital circuitry.

583163

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