电容输出滤波器LCL-T谐振功率变换器的定频控制

2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA) Pub Date : 2017-10-01 DOI:10.1109/CERA.2017.8343392

Gantla Sai Kumar Reddy, H. Nagendrappa

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引用次数: 5

摘要

本文提出了一种用于单相串并联LCL-T谐振变换器的定频移相控制方法。逆变器开关的零电压开关(ZVS)是通过将变换器设计为在上述谐振模式下工作来实现的。采用稳态近似交流电路分析方法对定频移相控制变换器进行了分析。LCL-T转换器提供内置保护，防止负载短路。固定频率控制的LCL-T变换器需要很小的相移变化来调节输出电压，以适应输入电压和负载的大变化。由于整个输入电压和负载的变化，变换器的工作效率很高。300w, DC-DC, lc - t谐振变换器是专为太阳能发电应用。通过PSIM仿真研究了该定频移相控制下变换器的性能。对理论和仿真结果进行了比较。

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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Fixed frequency control of LCL-T resonant power converter with capacitive output filter

In this paper, a fixed-frequency phase shift control is proposed for a 1-phase series-parallel LCL-T resonant converter. Zero-voltage switching (ZVS) of the inverter switches for wide variations in input voltage and load is achieved by designing the converter to operate in above resonance mode. Steady state approximate AC circuit analysis method is used to analyze the converter with fixed-frequency phase shift control. LCL-T converter offers a built-in protection against short-circuiting of the load. LCL-T converter with fixed-frequency control requires a very small change in phase shift to regulate the output voltage for wide variations in input voltage and load. Due to ZVS for the entire input voltage and load variations, the operating efficiency of the converter is high. A 300 W, DC-DC, LCL-T resonant converter is designed for solar energy generation applications. The performance of the converter with the proposed fixed-frequency phase shift control is studied with PSIM simulations. The theoretical and simulation results are compared and presented.

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2017 6th International Conference on Computer Applications In Electrical Engineering-Recent Advances (CERA)

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