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A circuit for powering a three-phase AC induction motor. The circuit generates a first signal of the form Vdc+A sin (2ppp

A circuit for powering a three-phase AC induction motor. The circuit generates a first signal of the form Vdc+A sin (2ppp

대표청구항 ▼

A circuit for controlling power to a three-phase induction motor, the circuit comprising: a. first means for generating a first signal having the form Vdc+A sin (2pft-0°); b. second means for generating a second signal having the form Vdc+A sin (2pft+60°) coupled to the first means for generating; c

A circuit for controlling power to a three-phase induction motor, the circuit comprising: a. first means for generating a first signal having the form Vdc+A sin (2pft-0°); b. second means for generating a second signal having the form Vdc+A sin (2pft+60°) coupled to the first means for generating; c. means for forming a third signal by pulse-width modulating a fourth signal representative of a difference between a first difference between two motor winding voltages and the first signal; d. means for forming a fifth signal by pulse-width modulating a sixth signal representative of a difference between a second difference between two motor winding voltages and the second signal; and e. means for driving the motor coupled to receive the third signal and the fifth signal for generating six motor drive control signals.