An Optimized Single-Stage Isolated Swiss-Type AC/DC Converter Based on Single Full-Bridge With Midpoint-Clamper

Autor:	Jinming Xu, Shaojun Xie, Li Zhouyang, Pengcheng Zhao, Binfeng Zhang
Rok vydání:	2021
Předmět:	Total harmonic distortion Rectifier Materials science Power rating business.industry Clamper Electrical engineering Topology (electrical circuits) Power factor Electrical and Electronic Engineering AC power business Galvanic isolation
Zdroj:	IEEE Transactions on Power Electronics. 36:11288-11297
ISSN:	1941-0107 0885-8993
DOI:	10.1109/tpel.2021.3073742
Popis:	The Swiss-type rectifier (SR) uses harmonic injection circuit and two dc–dc converters to help three-phase uncontrolled rectifier bridge to achieve better power factor correction (PFC). By applying the full-bridge topology to the dc structure, both the soft switching and the high-frequency galvanic isolation can be achieved. However, two full-bridge structures are required to realize the PFC principle of SR. That means the current flows through at least four switches and two transformers during the power conduction or freewheeling period. There are improvements in both conduction loss and core utilization. Thus, an optimized single-stage isolated Swiss-type ac/dc converter based on a single full-bridge with midpoint-clamper is proposed. Only one full-bridge structure is used to improve the conduction loss and core utilization. Two bidirectional voltage clampers are used to implement the PFC principle of the SR. The performance of the proposed converter has been verified by experiments. A total of 95.4% efficiency under half rated power and 5% input current THD under rated power have been achieved under a 10-kW 380 Vac input/400 Vdc output prototype with 90 kHz switching frequency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::61f9d6e2af0b063c7a7b7a2f81ef7a82 https://doi.org/10.1109/tpel.2021.3073742 Zobrazit plný text záznamu