磁集成耦合电感开关电容组合Boost变换器  

Magnetically Integrated Coupled Inductor Switching Capacitor Combined Boost Converter

作　　者：李洪珠[1] 包雨林 陈星星 李洪亮 Li Hongzhu;Bao Yulin;Chen Xingxing;Li Hongliang(School of Electrical and Control Engineering Liaoning Technical University,Huludao 125105 China;School of Mining and Coal Inner Mongolia University of Science and Technology,Baotou 014010 China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105 [2]内蒙古科技大学矿业与煤炭学院,包头014010

出　　处：《电工技术学报》2025年第6期1828-1839,共12页Transactions of China Electrotechnical Society

基　　金：辽宁省教育厅基本科研面上项目(LJZK0326);内蒙古自治区高等学校科学研究重点项目(NJZZ22444)资助。

摘　　要：为进一步提高非隔离DC-DC变换器的高增益性,降低开关管的电压应力,该文提出一种磁集成耦合电感开关电容组合Boost变换器。该变换器采用单个开关管降低了拓扑结构的复杂度,前级独立电感的存在保持了低输入电流纹波,引入耦合电感可以进一步提高变换器的增益,利用钳位结构可以吸收漏感能量,有效缓解电压尖峰。该变换器引入磁集成技术将独立电感与耦合电感进行解耦集成,可进一步减小变换器磁件的体积和数量,进而在一定程度上提升变换器的功率密度。该文分析变换器的主要工作波形与原理,在此基础上推导变换器的各项参数,对解耦集成磁件进行结构与参数设计并进行仿真验证。最后通过一台输入18 V、输出210 V、额定功率200 W的实验样机,验证了理论分析的正确性。In recent years,high-gain converters have been widely used in industries such as new energy generation systems,electric vehicles,industrial automation,and information construction,and the demand is also increasing.However,classic boost converters cannot achieve high voltage gain,and excessively high-duty cycles can lead to a decrease in efficiency and an increase in voltage stress.Therefore,in-depth studies on high-gain converters have been conducted to meet high-gain needs.Currently,switching capacitor units,switching inductor units,and coupling inductor technology can be combined to achieve a high gain of converters.At the same time,magnetic integration technology can achieve miniaturization and light weighting of converters. Firstly, based on the classic quadratic converter, a magnetic integrated coupled inductor switched capacitor combination Boost converter is proposed by combining switch capacitor units, coupled inductor magnetic integration technology, clamp structure, topology combination and simplification, and device reuse. The working mode, voltage gain, and voltage stress are analyzed, and the losses and efficiency are calculated. A pie chart of the loss proportion in each theoretical calculation part is presented, and the design structure and parameters of the decoupled integrated magnetic component are presented. Simulation analysis is conducted based on the calculation results. Compared with other methods, the volume of integrated magnetic components can be reduced by about 21.5%. Finally, an experimental prototype is designed, and an experimental platform is built based on the existing conditions in the laboratory. The waveforms and the efficiency curves at different powers are obtained. The input side of the proposed converter is connected to an 18 V power supply, and the output voltage at a switching frequency of 50 kHz is 210 V. The size of the load is adjusted to output different powers. When the output power is 160, 180, 200, 220, 240, and 260 W, the corresponding efficiencies are 91.38%, 91.

关 键 词：BOOST变换器 开关电容 磁集成 耦合电感 

分 类 号：TM46[电气工程—电器]