基于简化时域分析的LLC变换器实时全量程同步整流策略

IF 6.5 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Electronics Pub Date : 2024-12-11 DOI:10.1109/TPEL.2024.3515155

Jie Chen;Junzhong Xu;Yuxin Zhang;Jian Wang;Jiahao Li;Yunfeng Peng;Yong Wang

{"title":"基于简化时域分析的LLC变换器实时全量程同步整流策略","authors":"Jie Chen;Junzhong Xu;Yuxin Zhang;Jian Wang;Jiahao Li;Yunfeng Peng;Yong Wang","doi":"10.1109/TPEL.2024.3515155","DOIUrl":null,"url":null,"abstract":"Model-based synchronous rectification (SR) approach for <inline-formula><tex-math>$LLC$</tex-math></inline-formula> converters offers significant advantages, such as low cost, high scalability, and elimination of additional losses, as no high-frequency signal sampling is required. However, the performance of model-based SR approach heavily depends on the accuracy of the underlying model. Moreover, given that the <inline-formula><tex-math>$LLC$</tex-math></inline-formula> converters operate in various modes, each necessitating a different model, it is crucial to identify the operating mode to apply the appropriate model. An inaccurate model or failure to recognize the operation mode may lead to degraded SR performance and even risk of system instability. In this article, a novel model-based SR strategy via simplified time domain analysis is proposed, which is integrated with both SR timing online algorithm and operation mode online recognition algorithm. Unlike the existing model-based SR strategies, all the results are calculated online in the proposed SR strategy without relying on fitting curves, and the proposed SR strategy is available under all typical <inline-formula><tex-math>$LLC$</tex-math></inline-formula> converter operating mode. Both simulation and experiment are carried out for validation. The results demonstrate an overall SR timing error of less than 0.6%, along with a maximum efficiency improvement of 0.34% compared to existing model-based strategies.","PeriodicalId":13267,"journal":{"name":"IEEE Transactions on Power Electronics","volume":"40 4","pages":"4997-5013"},"PeriodicalIF":6.5000,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Novel Simplified Time Domain Analysis-Based Synchronous Rectification Strategy for LLC Converter Featuring Real-Time Full-Range Operation\",\"authors\":\"Jie Chen;Junzhong Xu;Yuxin Zhang;Jian Wang;Jiahao Li;Yunfeng Peng;Yong Wang\",\"doi\":\"10.1109/TPEL.2024.3515155\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Model-based synchronous rectification (SR) approach for <inline-formula><tex-math>$LLC$</tex-math></inline-formula> converters offers significant advantages, such as low cost, high scalability, and elimination of additional losses, as no high-frequency signal sampling is required. However, the performance of model-based SR approach heavily depends on the accuracy of the underlying model. Moreover, given that the <inline-formula><tex-math>$LLC$</tex-math></inline-formula> converters operate in various modes, each necessitating a different model, it is crucial to identify the operating mode to apply the appropriate model. An inaccurate model or failure to recognize the operation mode may lead to degraded SR performance and even risk of system instability. In this article, a novel model-based SR strategy via simplified time domain analysis is proposed, which is integrated with both SR timing online algorithm and operation mode online recognition algorithm. Unlike the existing model-based SR strategies, all the results are calculated online in the proposed SR strategy without relying on fitting curves, and the proposed SR strategy is available under all typical <inline-formula><tex-math>$LLC$</tex-math></inline-formula> converter operating mode. Both simulation and experiment are carried out for validation. The results demonstrate an overall SR timing error of less than 0.6%, along with a maximum efficiency improvement of 0.34% compared to existing model-based strategies.\",\"PeriodicalId\":13267,\"journal\":{\"name\":\"IEEE Transactions on Power Electronics\",\"volume\":\"40 4\",\"pages\":\"4997-5013\"},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2024-12-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Transactions on Power Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10791811/\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Power Electronics","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10791811/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

摘要

基于模型的同步整流（SR）方法用于$LLC$转换器具有显著的优势，例如低成本，高可扩展性和消除额外损耗，因为不需要高频信号采样。然而，基于模型的SR方法的性能在很大程度上取决于底层模型的准确性。此外，考虑到$LLC$转换器在各种模式下运行，每种模式都需要不同的模型，确定运行模式以应用适当的模型至关重要。不准确的模型或无法识别操作模式可能导致SR性能下降，甚至可能导致系统不稳定。本文提出了一种基于简化时域分析的基于模型的SR策略，该策略集成了SR定时在线算法和运行模式在线识别算法。与现有的基于模型的SR策略不同，本文提出的SR策略不依赖于拟合曲线，所有结果都是在线计算的，并且该策略适用于所有典型的$LLC$转换器工作模式。并进行了仿真和实验验证。结果表明，与现有的基于模型的策略相比，总体SR定时误差小于0.6%，最大效率提高0.34%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

A Novel Simplified Time Domain Analysis-Based Synchronous Rectification Strategy for LLC Converter Featuring Real-Time Full-Range Operation

Model-based synchronous rectification (SR) approach for

$LLC$

converters offers significant advantages, such as low cost, high scalability, and elimination of additional losses, as no high-frequency signal sampling is required. However, the performance of model-based SR approach heavily depends on the accuracy of the underlying model. Moreover, given that the

$LLC$

converters operate in various modes, each necessitating a different model, it is crucial to identify the operating mode to apply the appropriate model. An inaccurate model or failure to recognize the operation mode may lead to degraded SR performance and even risk of system instability. In this article, a novel model-based SR strategy via simplified time domain analysis is proposed, which is integrated with both SR timing online algorithm and operation mode online recognition algorithm. Unlike the existing model-based SR strategies, all the results are calculated online in the proposed SR strategy without relying on fitting curves, and the proposed SR strategy is available under all typical

$LLC$

converter operating mode. Both simulation and experiment are carried out for validation. The results demonstrate an overall SR timing error of less than 0.6%, along with a maximum efficiency improvement of 0.34% compared to existing model-based strategies.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

IEEE Transactions on Power Electronics 工程技术-工程：电子与电气

CiteScore

15.20

自引率

20.90%

发文量

1099

审稿时长

3 months

期刊介绍： The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.