Interleaved high step-up DC-DC converter with three-winding coupled inductors for renewable energy system

2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES) Pub Date : 1900-01-01 DOI:10.1109/IESES.2018.8349860

Shin-Ju Chen, Sung-Pei Yang, Chao-Ming Huang, Sin-Da Li

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引用次数: 5

Abstract

An interleaved high step-up DC-DC converter with three-winding coupled inductors and voltage multiplier modules is proposed for high voltage gain and high efficiency applications. The configuration integrates the techniques of winding-cross-coupled inductors, voltage multiplier modules and interactive using the clamp capacitors. The converter achieves high voltage gain without operating at extreme duty ratio. The switch voltage stress is greatly lower than the output voltage such that the low-voltage-rated MOSFETs with low conduction resistor are available to reduce the conduction losses. The output-diode reverse-recovery problem is alleviated due to the leakage inductances of the coupled inductors. The leakage energy of the coupled inductors is recycled such that the voltage spikes on the power switches are avoided and the efficiency is improved. The input current ripple is decreased due to the interleaved operation. A 1000 W experimental prototype with 36 V input and 400 V output is built and tested to verify the effectiveness of the proposed converter.

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可再生能源系统用三绕组耦合电感交错高升压DC-DC变换器

为了实现高电压增益和高效率的应用，提出了一种具有三绕组耦合电感和电压倍增模块的交错高升压DC-DC变换器。该结构集成了绕组交叉耦合电感器、电压倍增器模块和使用钳位电容器的交互技术。该变换器无需在极端占空比下工作即可实现高电压增益。开关电压应力大大低于输出电压，因此具有低导通电阻的低额定电压mosfet可用于降低导通损耗。由于耦合电感的漏电感，减轻了输出二极管的反向恢复问题。耦合电感的漏能被回收，从而避免了电源开关上的电压尖峰，提高了效率。由于交错操作，输入电流纹波减小。建立了输入36v、输出400v的1000w实验样机，并对其进行了测试，验证了所提出变换器的有效性。

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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2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems (IESES)

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