A Near State PWM Method With Reduced Switching Frequency And Reduced Common Mode Voltage For Three-Phase Voltage Source Inverters

Uen E., HAVA A. M.

IEEE International Electric Machines and Drives Conference (IEMDC 2007), Antalya, Turkey, 3 - 05 May 2007, pp.235-236 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/iemdc.2007.383583
  • City: Antalya
  • Country: Turkey
  • Page Numbers: pp.235-236
  • Keywords: inverter, PWM, VSI, common mode voltage, common mode current, ASD, EMI, voltage reflection, space vector, DPWM, REDUCTION, CURRENTS
  • Middle East Technical University Affiliated: Yes


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.