Research and optimization design of two-stage isolated inverter power supply based on series quasi-resonance

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Circuit World Pub Date : 2023-04-03 DOI:10.1108/cw-10-2022-0270

Dangshu Wang, Jiaan Yi, Luwen Song, X. Deng, Xinxia Wang, Zhen Dong

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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.

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基于串联准谐振的两级隔离逆变电源的研究与优化设计

目的本文旨在解决现有逆变电源拓扑结构中硬开关损耗大、谐振参数设计不明确的问题。设计/方法/途径本文提出了一种简单可靠的两级隔离逆变器，由串联准谐振推挽和外部续流二极管全桥逆变器组成。分析了电源拓扑结构，分析了拓扑模式，建立了变换器的数学模型，推导了变换器直流增益。给出了谐振回路的负载与输出增益之间的关系，提出了一种新的谐振参数设计方法，并阐明了变换器谐振元件的参数设计。根据提出的谐振参数设计方法对变换器的谐振元件进行了设计，并通过仿真和500 W实验样机。经过实验测试，实验样机的峰值效率可达94%。由于实验样机实现了软开关，大大降低了开关的发热量，因此去除了沉重的散热器，与传统电源相比体积减少了约30%，输出电压的总谐波失真约为2%。独创性/价值通过实验验证了该方案的可行性，这对于提高逆变电源的效率和参数优化具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Circuit World 工程技术-材料科学：综合

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

>12 weeks

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).