Abstract
This paper proposes a new power converter which consists of two identical 3-phase PWM modulators and a novel resonant circuit. The zero-switching-loss PWM converter with novel resonant circuit is presented. The proposed resonant circuit is capable of PWM operation with minimum dc bus voltage stresses and minimum peak resonant current. New control strategy is integrated to realize bidirectional power converter without electrolytic link capacitor. The power flow between converters is bidirectional and regenerative braking is inherent. The source side currents maintain sinusoidal waveforms with unity power factor. It is observed in the experiment that the resonant circuit guarantees the soft switching of the converter power devices. In addition, by balancing the active power between the source and load side, the voltage across a small ceramic link capacitor can be maintained within a small deviation from the reference. Simulation results and experimental results are presented to verify the operational principles.
| Original language | English |
|---|---|
| Pages (from-to) | 293-299 |
| Number of pages | 7 |
| Journal | PESC Record - IEEE Annual Power Electronics Specialists Conference |
| State | Published - 1993 |
| Event | Proceedings of the 1993 IEEE 24th Annual Power Electronics Specialist Conference - Seattle, WA, USA Duration: 20 Jun 1993 → 20 Jun 1993 |