Title :
Quick regulation of sinusoidal output current in PWM converter-inverter system
Author :
Nonaka, Sakutaro ; Neba, Yasuhiko
Author_Institution :
Dept. of Electr. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
An induction motor drive system composed of a current output-type power converter and a current source inverter with sinusoidal input and output voltage/current is presented. Pulsewidth modulation (PWM) strategies with GTOs are applied to the converter and the inverter sections from the point of view of reduction of the current harmonics and suppression of the motor torque pulsations. A simple method for quick regulation of the AC output current amplitude is presented and applied to the PWM inverter section. To demonstrate the improvement in the current response of the inverter, a slip frequency/current regulation of an induction motor is considered. The experimental results of steady-state and dynamic operations of the motor are shown. The merits and demerits of this control method are discussed
Keywords :
electric current control; electric drives; frequency control; harmonics; induction motors; invertors; machine control; machine theory; power convertors; pulse width modulation; slip (asynchronous machines); thyristor applications; torque; GTOs; PWM; current response; current source inverter; harmonics; induction motor drive; machine control; power convertors; slip frequency control; thyristor applications; torque pulsations; Current control; Frequency; Induction motor drives; Induction motors; Pulse inverters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Torque converters; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
