Title :
A Near State PWM Method With Reduced Switching Frequency And Reduced Common Mode Voltage For Three-Phase Voltage Source Inverters
Author :
Ün, Emre ; Hava, Ahmet M.
Author_Institution :
Middle East Tech. Univ., Ankara
Abstract :
The near state PWM (NSPWM) method, which reduces the common mode voltage/current, is proposed for three-phase PWM inverter drives. The optimal voltage vectors and their sequences are determined. The voltage linearity and DC bus and AC output PWM current ripple characteristics are studied. The method is thoroughly investigated and its performance is compared to conventional methods. Theory, simulations, and experiments show that NSPWM exhibits superior common mode and satisfactory PWM ripple performance characteristics.
Keywords :
PWM invertors; motor drives; DC bus; NSPWM method; PWM current ripple characteristics; common mode current; common mode voltage; near state PWM method; optimal voltage vectors; switching frequency; three-phase PWM inverter drives; three-phase voltage source inverters; voltage linearity; Electromagnetic interference; Linearity; Pulse width modulation; Pulse width modulation inverters; Reflection; Space vector pulse width modulation; Switches; Switching frequency; Variable speed drives; Voltage; ASD; DPWM; EMI; Inverter; PWM; VSI; common mode current; common mode voltage; space vector; voltage reflection;
Conference_Titel :
Electric Machines & Drives Conference, 2007. IEMDC '07. IEEE International
Conference_Location :
Antalya
Print_ISBN :
1-4244-0742-7
Electronic_ISBN :
1-4244-0743-5
DOI :
10.1109/IEMDC.2007.383583
