[논문]Design of a Novel Integrated L-C-T for PSFB ZVS Converters

Tian, Jiashen; Gao, Junxia; Zhang, Yiming

doi:10.6113/jpe.2017.17.4.905

Design of a Novel Integrated L-C-T for PSFB ZVS Converters 원문보기

Journal of power electronics, v.17 no.4, 2017년, pp.905 - 913

Tian, Jiashen (Faculty of Information, Beijing University of Technology) , Gao, Junxia (Faculty of Information, Beijing University of Technology) , Zhang, Yiming (Faculty of Information, Beijing University of Technology)

Abstract ▼ AI-Helper

To enhance the zero-voltage switching (ZVS) range and power density of the phase-shift full-bridge (PSFB) ZVS converters used in geophysical exploration, an additional resonant inductor is used as a leakage inductance and a blocking capacitor which is equivalent to interlayer capacitance is integrated into a novel integrated inductor-capacitor-transformer (L-C-T). The leakage inductance and equivalent interlayer capacitance of the novel integrated L-C-T are difficult to determine by conventional methods. To address this issue, this paper presents accurate and efficient methods to compute the leakage inductance and equivalent interlayer capacitance. Moreover, the accuracy of this methodology, which is based on electromagnetic energy and Lebedev's method, is verified by an experimental analysis and a finite element analysis (FEA). Taking the problems of the novel integrated L-C-T into consideration, the losses of the integrated L-C-T are analyzed and the temperature rise of the integrated L-C-T is determined by FEA. Finally, a PSFB ZVS converter prototype with the novel integrated L-C-T is designed and tested.

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가설 설정

14. Waveforms of the proposed IM transformer: (a) light-load condition; (b) 100% load condition.

제안 방법

12. Power density comparisons of the conventional converter with separated magnetic components and the proposed conventer with the novel integrated L-C-T.
Based on the stored magnetic energy method and Lebedev’s method, the leakage inductance of the novel integrated L-C-T can be calculated using Equation (13). The proposed methods are more suitable for the integrated L-C-T with its complex structure.
The prototype is implemented with the following specifications: input voltage Vin= 340―420 V, output voltage Vout= 200―1000 V, output current Iout= 40 A, switching frequency f= 20 kHz, primary switches Q1―Q4=FF300R12KE4, transformer leakage inductance Llk=23.28μH, high-frequency rectifiers DR1―DR8= DSEI 2x101, output inductor Lout=1.6mH, output capacitor Cout= 990μF, and Fan= DB 1238B24H (12V, 21.6W, r/min= 6000).

이론/모형

To address these problems, methods based on electric field energy, magnetic field energy and Lebedev’s equations are developed in this paper to determine the leakage inductance and interlayer capacitance of the proposed integrated L-C-T [13]-[15].

참고문헌 (26)

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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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상세보기
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Design of a Novel Integrated L-C-T for PSFB ZVS Converters 원문보기

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Design of a Novel Integrated L-C-T for PSFB ZVS Converters 원문보기

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