Abstract
In AC to DC power conversion application, totem-pole bridgeless PFC topology is drawing more attention, owing to its low semiconductor components count and high efficiency. The switches in totem-pole bridgeless PFC are usually operated as a pair of boost converters within a half-line-cycle, which is equivalent to unipolar pulse-width-modulation scheme. However, zero-crossing current distortion is unavoidable, due to the dead-time is inserted between the commutation of low-frequency, line rectification leg. To mitigate such current distortion near zero-crossing, a hybrid pulse-width-modulation scheme for totem-pole bridgeless PFC, is proposed. The idea is basically hybridizing both unipolar pulse-width-modulation and bipolar pulse-width-modulation. The proposed method transits the modulation scheme from unipolar modulation to bipolar modulation during the event of zero-crossing. Hence, the current distortion at the zero-crossing is mitigated. Operations and experimental results will be given.
| Original language | English |
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| Title of host publication | 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (2017 IFEEC - ECCE Asia) |
| Publisher | IEEE |
| Pages | 1286-1290 |
| ISBN (Print) | 9781509051571 |
| DOIs | |
| Publication status | Published - Jun 2017 |
| Event | 3rd IEEE International Future Energy Electronics Conference and ECCE Asia (2017 IFEEC - ECCE Asia) - Kaohsiung, Taiwan, China Duration: 3 Jun 2017 → 7 Jun 2017 |
Conference
| Conference | 3rd IEEE International Future Energy Electronics Conference and ECCE Asia (2017 IFEEC - ECCE Asia) |
|---|---|
| Place | Taiwan, China |
| City | Kaohsiung |
| Period | 3/06/17 → 7/06/17 |
Research Keywords
- Power Factor Correction
- Pulse-width-modulation
- Single-Phase Rectifier
- Totem-pole PFC