Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Improvement of Voltage Utilization in PWM Inverters

PWM 인버터의 전압 이용률 개선

  • Lee, G.-Myoung (School of Electrical and Electronic Eng., Yeungnam Univ.) ;
  • Lee, Dong-Choon (School of Electrical and Electronic Eng., Yeungnam Univ.)
  • 이지명 (영남대학교 전기전자공학부) ;
  • 이동춘 (영남대학교 전기전자공학부)
  • Published : 1997.11.29
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Abstract

In a space vector PWM inverter, the dc input voltage is utilized to the maximum by an overmodulation technique, which is derived from Fourier series expansion of the reference phase voltage. Data angles such reference angle and holding angle are piecewise-linearized for on-line control. Harmonic components and THD of the output voltage are also analyzed. For disturbance of the dc input voltage, a smooth transition is obtained from a linear range to the six-step mode by the control angle change.

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