An Interleaved Secondary-Side Modulated LLC Resonant Converter or Wide Output Range Applications
Li, Zhiqing1,2; Xue, Bo1; Wang, Haoyu1
2020-02
Source PublicationIEEE Transactions on Industrial Electronics
ISSN0278-0046
Volume67Issue:2Pages:1124-1135
Status已发表
DOI10.1109/TIE.2019.2897507
Abstract

In this paper, an LLC type converter with two interleaved pulsewidth modulation (PWM) rectifiers is proposed. Compared with the conventional LLC converter, it achieves a wide voltage regulation range independent of load. In the proposed structure, each secondary-side PWM rectifier can operate individually. With the interleaving technique and shared primary-side switching network, the circuit secondary-side current stress is halved and the primary-side current stress is largely reduced. Besides, the filter capacitor requirement is reduced. Therefore, the proposed structure is a good option for medium/high power wide output range applications. The symmetrical LLC resonant tanks always operate at the resonant frequency, which marks the optimal operation point of the LLC resonant tank. Therefore, the conduction loss is effectively mitigated. In the proposed converter, zero-voltage turning-ON (ZVS) of the primary-side MOSFETs can be ensured and is independent of the load. Moreover. the turning-OFF currents of the primary-side MOSFETs are small and are also load independent. This brings the benefits of minimized circulating current and negligible turning-OFF loss and no MOSFET turning-OFF voltage spike. The secondary-side auxiliary MOSFETs turn-ON with ZVS and rectifying diodes turn-OFF with limited di/dt. Topological analysis and experimental results of a 1.3 kW/100 kHz prototype generating 230-440 V output from 390-V input are presented. The prototype demonstrates 97.31% peak efficiency and good performance over a wide output range.

KeywordInterleaved LLC pulsewidth modulated (PWM) zero-voltage turning (ZVS)
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Indexed BySCI
Funding ProjectShanghai Sailing Program[16YF1407600]
WOS Research AreaAutomation & Control Systems ; Engineering ; Instruments & Instrumentation
WOS SubjectAutomation & Control Systems ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS IDWOS:000490879800001
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
EI KeywordsMOSFET devices ; Natural frequencies ; Pulse width modulation ; Rectifying circuits ; Topology ; Voltage regulators ; Zero voltage switching
EISSN1557-9948
WOS KeywordHIGH-EFFICIENCY ; BURST-MODE ; DESIGN
Original Document TypeArticle
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://kms.shanghaitech.edu.cn/handle/2MSLDSTB/34293
Collection信息科学与技术学院_硕士生
信息科学与技术学院_PI研究组_王浩宇组
Corresponding AuthorWang, Haoyu
Affiliation1.ShanghaiTech Univ, Sch Informat Sci & Technol, Power Elect & Renewable Energies Lab, Shanghai 201210, Peoples R China
2.Analog Devices Inc, Shanghai 201203, Peoples R China
First Author AffilicationSchool of Information Science and Technology
Corresponding Author AffilicationSchool of Information Science and Technology
First Signature AffilicationSchool of Information Science and Technology
Recommended Citation
GB/T 7714
Li, Zhiqing,Xue, Bo,Wang, Haoyu. An Interleaved Secondary-Side Modulated LLC Resonant Converter or Wide Output Range Applications[J]. IEEE Transactions on Industrial Electronics,2020,67(2):1124-1135.
APA Li, Zhiqing,Xue, Bo,&Wang, Haoyu.(2020).An Interleaved Secondary-Side Modulated LLC Resonant Converter or Wide Output Range Applications.IEEE Transactions on Industrial Electronics,67(2),1124-1135.
MLA Li, Zhiqing,et al."An Interleaved Secondary-Side Modulated LLC Resonant Converter or Wide Output Range Applications".IEEE Transactions on Industrial Electronics 67.2(2020):1124-1135.
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