Title :
High-frequency split zero-vector PWM with harmonic reduction for induction motor drive
Author :
Murai, Yoshihiro ; Gohshi, Yoichi ; Matsui, Keiju ; Hosono, Isamu
Author_Institution :
Dept. of Electron. & Comput. Eng., Gifu Univ., Japan
Abstract :
The selected elimination of six multiple harmonies in magnetic flux is proposed for PWM inverters used to drive induction motors. PWM switching patterns are derived from the direct elimination of radial fluctuation of rotating flux in the motor. All harmonies below the 66th are eliminated, and the zero-vector splitting method is utilized to obtain a high-frequency efficient PWM. The authors clarify the dependencies of torque ripple on motor parameters utilizing the indices of the pulsation of rotating flux in analytical form. The microprocessor-implemented experimental results are also added, and the dead-zone for device protection is simultaneously compensated
Keywords :
digital control; electric drives; harmonics; induction motors; invertors; machine control; magnetic flux; microcomputer applications; pulse width modulation; switching; HF; PWM inverters; digital control; harmonic reduction; induction motor drive; machine control; magnetic flux; microprocessors; switching; torque ripple; zero-vector splitting method; Fluctuations; Induction motor drives; Induction motors; Iron; Magnetic flux; Protection; Pulse width modulation; Pulse width modulation inverters; Torque; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
