Title :
Operating characteristics of PWM converter-inverter for induction motor drives
Author :
Nonaka, Sakutaro ; Neba, Yasuhiko
Author_Institution :
Dept. of Electr. Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
An induction motor drive system composed of a converter with sinusoidal inputs and a current-source inverter with sinusoidal output voltage and current is presented. A PWM strategy is applied to both the converter and the inverter using GTOs (gate turn-off thyristors). The output DC link voltage of the converter is controlled by changing the pulsewidth of, and shifting the PWM pattern. Experimental results for a 2.2 kW induction motor and analytical results using state variable methods are reported for the basic steady-state characteristics of the input current, the input power factor, and the DC link voltage in the converter. The proposed system should provide smooth and noiseless drives for AC motors as well as an ideal variable power supply system for AC power sources.<>
Keywords :
electric drives; induction motors; invertors; power convertors; pulse width modulation; 2.2 kW; AC motors; DC link voltage; GTOs; PWM converter-inverter; current-source inverter; electric drives; induction motor drives; power convertors; pulsewidth; state variable methods; steady-state characteristics; thyristor applications; variable power supply system; AC motors; Induction motor drives; Induction motors; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Reactive power; Steady-state; Thyristors; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18272
