1. A. Schoenung Static frequency changers with subharmonic control in conjunction with reversible variable-speed ac drives 555 1964
2. Yoshita Matching technique for drive system 1986
3. F. Bernat Diminishing torque pulsation in induction motor powered by pulse width modulated inverters 615 1974
4. Y. Murai New PWM method for fully digitized inverters 448 1985
5. Soune A method to reduce the torque ripple of a motor fed by voltage PWM inverter 315 1986