Title :
A Carrier-Based Unbalanced PWM Method for Four-Leg Voltage Source Inverter Fed Unsymmetrical Two-Phase Induction Motor
Author :
Kumsuwan, Y. ; Premrudeepreechacharn, Suttichai ; Kinnares, Vijit
Author_Institution :
Dept. of Electr. Eng., Chiang Mai Univ., Chiang Mai, Thailand
fDate :
5/1/2013 12:00:00 AM
Abstract :
This paper presents a carrier-based unbalanced pulsewidth-modulated method for a two-phase four-leg voltage source inverter (VSI) and its realization for an unsymmetrical two-phase induction motor. A modulation strategy is developed to synthesize unbalanced two-phase output voltage waveforms based on the unipolar modulation technique with open-loop V/f control. The proposed control scheme allows independent magnitude controllability and quadrature phase angle for unbalanced two-phase output voltages. Thus, the modulation algorithm makes the four-leg VSI inequitable with unbalanced two-phase loads. Simulation and experimental results confirm the feasibility of the control method for the inverter.
Keywords :
PWM invertors; frequency control; induction motors; machine control; voltage control; and quadrature phase angle; carrier-based unbalanced PWM method; carrier-based unbalanced pulsewidth-modulated method; four-leg VSI; four-leg voltage source inverter fed unsymmetrical two-phase induction motor; independent magnitude controllability; open-loop V-f control; unbalanced two-phase loads; unbalanced two-phase output voltage waveform synthesis; unipolar modulation technique; voltage-frequency control; Induction motors; Pulse width modulation; Rotors; Stator windings; Voltage control; Windings; Carrier-based pulsewidth-modulated (PWM) (CBPWM) method; open-loop $V/f$ control; two-phase four-leg voltage-source inverter (VSI); unsymmetrical two-phase induction motor (TPIM);
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2012.2228138
