双开关二次型结构的耦合电感高增益DC-DC变换器
Dual-switch Quadratic High-gain DC-DC Converter with Coupled Inductor
程诗伟 1赵世伟1
作者信息
- 1. 华南理工大学电力学院,广州 510641
- 折叠
摘要
在能源危机和环境问题的背景下,高电压增益的DC-DC变换器成为利用可再生新能源不可或缺的环节.基于此,提出 1 种双开关二次型结构,使传统的二次型 Boost 变换器的电压增益得到有效提升,且降低了开关管的电流应力.结合开关电容和耦合电感,提出 1 种电压增益极高的双开关二次型结构耦合电感高增益DC-DC变换器.该变换器具有电压增益高、2 个开关管同相、开关管和输出二极管电压应力低和多个二极管实现零电流关断的优点.详细分析了变换器的运行原理和稳态性能,包括电压增益推导、元器件电压电流应力等.制作了1款120 W样机,验证了理论分析的正确性和变换器的可行性.
Abstract
Under the background of energy crisis and environmental issues,the high-gain DC-DC converter is indispensable in renewable energy applications.A dual-switch quadratic structure is proposed to enhance the voltage gain of the traditional quadratic boost converter while reducing the current stress of switches.On this basis,by combining the switched capacitors and a coupled inductor,a dual-switch quadratic high-gain DC-DC converter with a couple inductor is put forward.This converter has advantages such as a very high voltage gain,a pair of switches with the same phase,low voltage stress of switches and output diode,and zero-current switching off in many diodes.The operating principle and steady-state performance of the converter are analyzed in detail,including the voltage gain derivation and the voltage and current stresses of components.Finally,a 120 W prototype was fabricated to verify the theoretical analysis and the feasibility of the converter.
关键词
高增益变换器/耦合电感/二次型Boost/开关电容Key words
High-gain converter/coupled inductor/quadratic boost/switched capacitor引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据