{"title":"Research and optimization design of two-stage isolated inverter power supply based on series quasi-resonance","authors":"Dangshu Wang, Jiaan Yi, Luwen Song, X. Deng, Xinxia Wang, Zhen Dong","doi":"10.1108/cw-10-2022-0270","DOIUrl":null,"url":null,"abstract":"\nPurpose\nThis paper aims to solve the problems of large hard switching loss and unclear resonant parameter design in the existing inverter power supply topology.\n\n\nDesign/methodology/approach\nThis paper proposes a simple and reliable two-stage isolated inverter composed of series quasi-resonant push-pull and external freewheeling diode full-bridge inverter. The power supply topology is analyzed, the topology mode is analyzed, the mathematical model of the converter is established and the DC gain of the converter is deduced. The relationship between the load and the output gain of the resonant tank is presented, a new resonant parameter design method is proposed, and the parameter design of the resonant element of the converter is clarified.\n\n\nFindings\nThe resonant components of the converter are designed according to the proposed resonant parameter design method, and the correctness of the method is verified by simulation and the development and testing of a 500 W experimental prototype. After experimental tests, the peak efficiency of the experimental prototype can reach 94%. Because the experimental prototype achieves soft switching, the heat generation of the switch is greatly reduced, so the heavy heat sink is removed, and the volume is reduced by about 30% compared with the traditional power supply, and the total harmonic distortion of the output voltage is about 2%.\n\n\nOriginality/value\nThe feasibility of the scheme is verified by experiments, which is of great significance for improving the efficiency of the inverter power supply and parameter optimization.\n","PeriodicalId":50693,"journal":{"name":"Circuit World","volume":"1 1","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Circuit World","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1108/cw-10-2022-0270","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose
This paper aims to solve the problems of large hard switching loss and unclear resonant parameter design in the existing inverter power supply topology.
Design/methodology/approach
This paper proposes a simple and reliable two-stage isolated inverter composed of series quasi-resonant push-pull and external freewheeling diode full-bridge inverter. The power supply topology is analyzed, the topology mode is analyzed, the mathematical model of the converter is established and the DC gain of the converter is deduced. The relationship between the load and the output gain of the resonant tank is presented, a new resonant parameter design method is proposed, and the parameter design of the resonant element of the converter is clarified.
Findings
The resonant components of the converter are designed according to the proposed resonant parameter design method, and the correctness of the method is verified by simulation and the development and testing of a 500 W experimental prototype. After experimental tests, the peak efficiency of the experimental prototype can reach 94%. Because the experimental prototype achieves soft switching, the heat generation of the switch is greatly reduced, so the heavy heat sink is removed, and the volume is reduced by about 30% compared with the traditional power supply, and the total harmonic distortion of the output voltage is about 2%.
Originality/value
The feasibility of the scheme is verified by experiments, which is of great significance for improving the efficiency of the inverter power supply and parameter optimization.
期刊介绍：
Circuit World is a platform for state of the art, technical papers and editorials in the areas of electronics circuit, component, assembly, and product design, manufacture, test, and use, including quality, reliability and safety. The journal comprises the multidisciplinary study of the various theories, methodologies, technologies, processes and applications relating to todays and future electronics. Circuit World provides a comprehensive and authoritative information source for research, application and current awareness purposes.
Circuit World covers a broad range of topics, including:
• Circuit theory, design methodology, analysis and simulation
• Digital, analog, microwave and optoelectronic integrated circuits
• Semiconductors, passives, connectors and sensors
• Electronic packaging of components, assemblies and products
• PCB design technologies and processes (controlled impedance, high-speed PCBs, laminates and lamination, laser processes and drilling, moulded interconnect devices, multilayer boards, optical PCBs, single- and double-sided boards, soldering and solderable finishes)
• Design for X (including manufacturability, quality, reliability, maintainability, sustainment, safety, reuse, disposal)
• Internet of Things (IoT).
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