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

Yifeng Wang; Liang Yang; Guodong Li; Shijie Tu

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

Vol. 18, No. 2, pp. 332-342, Mar. 2018

10.6113/JPE.2018.18.2.332

High efficiency

Multi-element resonant converter

Parameter selection

Resonant zero point

Soft-switching

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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%.

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Cite this article

[IEEE Style]

Y. Wang, L. Yang, G. Li, S. Tu, "A Parameter Selection Method for Multi-Element Resonant Converters with a Resonant Zero Point," Journal of Power Electronics, vol. 18, no. 2, pp. 332-342, 2018. DOI: 10.6113/JPE.2018.18.2.332.

[ACM Style]

Yifeng Wang, Liang Yang, Guodong Li, and Shijie Tu. 2018. A Parameter Selection Method for Multi-Element Resonant Converters with a Resonant Zero Point. Journal of Power Electronics, 18, 2, (2018), 332-342. DOI: 10.6113/JPE.2018.18.2.332.