Implementation of Softswitched Frequency Unfolder Technique for Single Phase Inverter


IEEE Mediterranean Electrotechnical Conference, Ajaccio, Fransa, 5 - 07 Mayıs 2008, ss.604-605 identifier

  • Basıldığı Şehir: Ajaccio
  • Basıldığı Ülke: Fransa
  • Sayfa Sayıları: ss.604-605


In this paper, a novel DC link softswitched inverter is presented. The new inverter uses softswitched frequency unfolder technique to provide soft-switching feature while keeping pulse width modulation (PWM) capability without high voltage stress The main obstacle for inverters to operate at high frequencies is the increasing switching losses with the increasing switching frequencies. At high switching frequencies, the EMI noises in the circuitry inrease and power density decreases. To overcome these problems, switching losses must be reduced. In this paper, with the help of proposed softswitching cell, the power loss at the switching instants are terminated and the operation of inverter at high frequencies ensured. As a result, with the use of the unfolder teacnique and softswitching cell, inverter efficiency increased.