An Improved ISOP-LLC Converter for Wide Voltage Variation Range

In this article, an improved ISOP-LLC converter is proposed for wide output voltage variation. The converter is consisted by two sub modules and two work models are obtained by modulating the primary side power devices. With the induced auxiliary connection, the extend voltage range can be achieved...

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Bibliographic Details
Main Authors: Wang, Yifeng, Chen, Chen, Chen, Bo, Zhao, Danfeng, Ji, Ruilin, Zhang, Mingzhi
Format: Conference Proceeding
Language:English
Subjects:
Frequency conversion
high frequency
ISO
ISOP-LLC
magnetic integration
planar transformer
Prototypes
Soft switching
Switches
Transformers
winding arrangement
Zero voltage switching
Online Access:Request full text
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Description
Summary:In this article, an improved ISOP-LLC converter is proposed for wide output voltage variation. The converter is consisted by two sub modules and two work models are obtained by modulating the primary side power devices. With the induced auxiliary connection, the extend voltage range can be achieved by mode switching. Compare to the conventional LLC converter, the proposed converter is more suit for high power conversion and its working frequency range is more narrow. On the other hand, the soft switching characteristics of the proposed converter is inherited form LLC converter and no additional power devices are introduced in the converter, which promise a high efficiency. The operation principle of the proposed converter is analyzed and the switching schematic of each mode is given with the voltage gain wave. A 500W experimental prototype with 36-132V output, 375V input is established to validate the proposed converter.
ISSN:2329-3748
DOI:10.1109/ECCE50734.2022.9948176