Active Front End Inverter with Quasi - resonance

  • Siebel, Henrik (Ingenieurburo Siebel) ;
  • Pacas, J.M. (Institute of Power Electronics and Electrical Drives, University of Siegen)
  • Published : 2003.01.01


A new three-phase soft-switching active front-end inverter is presented. The topology consists of a quasi-resonant PWM boost converter with an additional resonant branch, which provides low loss at high frequency operation. This leads to a high conversion efficiency and a remarkable reduction in the siBe of the input inductor. To synchronise the PWM pattern with the resonance cycle, a modified space vector modulation with asymmetrical PWM pattern is used. A high power factor can be achieved for both power flow directions. Due to a new control strategy the converter features a low content of harmonics in the line currents even for distorted line voltages.


  1. Y.C. Jung, H.L. Liu, G.C. Cho. and G.H. Cho. 'Soft Switching Space Vector PWM Inverter Using a New Quasi - Parallel Resonant DC Link'. IEEE Transactions on power electronics, pp. 503-511, 1996
  2. Y. Jang and R.W. Erickson. 'New Single-Switch Three-Phase High - Power-Factor Rectifiers Using Multiresonant Zero-Current Switching', IEEE Transactions on power electronics, pp. 194-201, 1998
  3. H. Siebel. J.M. Pacas, 'Netzseitiger Wechselrichter mit Quasi - Resonanz', SPS-IPC-Drive, 2000, Nurnberg
  4. H. Siebel and J.M. Pacus, 'Three-phase rectifier with quasi-resonant DC-link and a high power factor', EPE 99 - Lausanne
  5. Y. Jiang, H. Mao, F.C. Lee, and D. Borojevic, 'Simple high performance three-phase boost rectfiers', PESC '94