Full ZVS Load Range Diode Clamped Three-level DC-DC Converter with Secondary Modulation

Yong Shi

Full ZVS Load Range Diode Clamped Three-level DC-DC Converter with Secondary Modulation

Yong Shi

Vol. 16, No. 1, pp. 93-101, Jan. 2016

10.6113/JPE.2016.16.1.93

No circulating current

Reduced filter size

Three-level (TL) dc/dc converter

Zero-voltage switching (ZVS)

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Abstract

A new four-primary-switch diode clamped soft switching three-level DC-DC converter (TLDC) with full zero-voltage switching (ZVS) load range and TL secondary voltage waveform is proposed. The operation principle and characteristics of the presented converter are discussed, and experimental results are consistent with theoretical predictions. The improvements of the proposed converter include a simple and compact primary structure, TL secondary rectified voltage waveform, wide load range ZVS for all primary switches, and full output-regulated range with soft switching operation. The proposed converter also has some disadvantages. The VA rating of the transformer is slightly larger than that of conventional TLDCs in variable input and constant output mode. The conduction loss of the primary coil is slightly higher because an air gap is inserted into the magnetic cores of the transformer. Finally, the secondary circuit is slightly complex.

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Cite this article

[IEEE Style]

Y. Shi, "Full ZVS Load Range Diode Clamped Three-level DC-DC Converter with Secondary Modulation," Journal of Power Electronics, vol. 16, no. 1, pp. 93-101, 2016. DOI: 10.6113/JPE.2016.16.1.93.

[ACM Style]

Yong Shi. 2016. Full ZVS Load Range Diode Clamped Three-level DC-DC Converter with Secondary Modulation. Journal of Power Electronics, 16, 1, (2016), 93-101. DOI: 10.6113/JPE.2016.16.1.93.