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http://dx.doi.org/10.6113/JPE.2018.18.2.332

A Parameter Selection Method for Multi-Element Resonant Converters with a Resonant Zero Point  

Wang, Yifeng (Key Laboratory of Smart Grid of the Ministry of Education, Tianjin University)
Yang, Liang (Key Laboratory of Smart Grid of the Ministry of Education, Tianjin University)
Li, Guodong (State Grid Tianjin Electric Power Company)
Tu, Shijie (Repair Branch, State Grid Jiangxi Electric Power Company)
Publication Information
Journal of Power Electronics / v.18, no.2, 2018 , pp. 332-342 More about this Journal
Abstract
This paper proposes a parameter design method for multi-element resonant converters (MERCs) with a unique resonant zero point (RZP). This method is mainly composed of four steps. These steps include program filtration, loss comparison, 3D figure fine-tuning and priority compromise. It features easy implementation, effectiveness and universal applicability for almost all of the existing RZP-MERCs. Meanwhile, other design methods are always exclusive for a specific topology. In addition, a novel dual-CTL converter is also proposed here. It belongs to the RZP-MERC family and is designed in detail to explain the process of parameter selection. The performance of the proposed method is verified experimentally on a 500W prototype. The obtained results indicate that with the selected parameters, an extensive dc voltage gain is obtained. It also possesses over-current protection and minimal switching loss. The designed converter achieves high efficiencies among wide load ranges, and the peak efficiency reaches 96.9%.
Keywords
High efficiency; Multi-element resonant converter; Parameter selection; Resonant zero point; Soft-switching;
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Times Cited By KSCI : 2  (Citation Analysis)
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