带倍压单元的有源开关电感高增益变换器及其磁集成  

Active Switched Inductor High Step-Up Converter with Voltage Multiplier Cell and Magnetic Integration

作　　者：李洪珠[1] 陈星星 李超[1] 包雨林 李洪亮 Li Hongzhu;Chen Xingxing;Li Chao;Bao Yulin;Li Hongliang(Faculty 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7期2191-2202,共12页Transactions of China Electrotechnical Society

基　　金：辽宁省教育厅基本科研项目(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：有源开关电感结构将两条支路并联,可以降低开关管电流应力,实现高效的能量转换。然而,两个有源开关的交错导通会导致控制电路变得复杂。此外,仅采用有源开关电感结构可能无法达到足够的电压增益。为了解决这些问题,该文提出带倍压单元的有源开关电感高增益变换器结构。通过引入耦合电感和开关电容单元,提高电压增益。两个开关管同时开断的设计降低了控制电路的复杂度和成本。耦合电感的设计采用EIE型磁心,通过仿真和实验验证,实现两个耦合电感的解耦集成。最后,通过搭建一台输入电压为24V、输出电压为400V、满载功率为360W的实验样机,验证了所提变换器的合理性。In order to meet the voltage level requirements of DC microgrid,the research of high-step-up DC-DC converter has become a research hotspot.For the basic Boost converter,the voltage gain can reach infinity theoretically by increasing the duty cycle.However,the output voltage will decrease as the increase due to the influence of the parasitic parameters in actual circuit.Moreover,significant issues with reverse recovery and electromagnetic interference arise when operating under extreme duty cycle.Many researchers have proposed to introduce coupled inductors with appropriate turn ratio to improve the voltage gain of Boost converter.However,the coupled inductor essentially functions as a transformer,simultaneously its leakage inductor presents an unavoidable issue.Nevertheless,the leakage inductor will result in voltage spikes on semiconductors,thereby diminishing system efficiency.Additionally,the issue of electromagnetic interference has escalated.In order to overcome these problems,the researchers proposed an active clamp circuit,which can effectively suppress the voltage spikes of the power switches and recover the leakage energy to realize the zero current switching(ZCS)soft-switching of the power switches.However,this method increases the number of devices,the structure and control are more complicated.This paper utilizes the active switched inductor structure to alleviate voltage and current stresses on the power switches.Meanwhile,the voltage multiplier cell(VMC)structures and switched capacitor are integrating with active switched inductor structure.Moreover,the inductor of active switched inductor is replaced by the coupled inductor,which has significantly improved the voltage gain of the proposed converter.In order to verify the correctness and feasibility of the theory,an experimental prototype with input voltage 24 V,output 400 V and full load power 360 W is built.The proposed converter in this paper has the following characteristics:(1)The power switches are turned on simultaneously,resulting in a high

关 键 词：有源开关电感 耦合电感 开关电容 高增益 磁集成 

分 类 号：TM46[电气工程—电器]