带开关电容网络的交错并联磁集成电感Boost变换器  

Interleaved Parallel Boost Converter with Switched Capacitor Network and Magnetic Integrated Inductor

作　　者：荣德生[1] 段志田 李洪珠[1] 杨干兴 RONG Desheng;DUAN Zhitian;LI Hongzhu;YANG Ganxing(Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China;Hubei Power Transmission and Transformation Engineering Company, Wuhan 430063, 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]湖北省送变电工程公司,武汉430063

出　　处：《电源学报》2019年第4期35-43,共9页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51177067);辽宁省自然科学基金资助项目(201602359)~~

摘　　要：针对传统交错并联Boost变换器电压增益低、开关管电压应力高、电感电流纹波大等问题,提出一种新型交错并联Boost变换器。该变换器用2个开关电感单元分别代替储能电感L1和L2,并对开关电感进行耦合集成,在此基础上增加了1个二极管和2个电容构成开关电容网络。分析了变换器在不同占空比下的工作模态,推导了电压增益公式,分析了开关管电压应力和电感电流纹波的大小。与传统交错并联Boost变换器相比,该变换器性能得到明显提升,尤其在占空比D>0.5的情况下电压增益是传统交错并联Boost变换器的3(1+D)倍,开关管的电压应力减小了2/3,电感电流纹波也减小近一半。最后实验验证了理论分析的正确性。表明带开关电容网络的交错并联磁集成电感Boost变换器有着优良的工作性能。In consideration of the problems in the traditional interleaved parallel Boost converter, such as low voltage gain, high voltage stress in the switched tube, large current ripple of inductor current, etc., a novel interleaved parallel Boost converter was presented. First, two switched inductor units were used to replace storage inductors L 1 and L 2 , and the switched inductors were coupled and integrated. On this basis, one diode and two capacitors were added to form a switched capacitor network. Second, the working modes at different duty cycles were analyzed, the expression of voltage gain was derived, and the voltage stress in the switched tube and the size of inductor current ripple were analyzed. Compared with the traditional interleaved parallel Boost converter, the performance of the proposed converter was improved substantially. Especially, compared with the traditional interleaved parallel Boost converter, when the duty cycle D was larger than 0.5, the voltage gain of the proposed converter was 3 ( 1+D ) times higher, and the voltage stress in the switched tube and the current ripple of inductor current were reduced by two thirds and one half, respectively. Finally, the theoretical analysis was verified by experimental results, showing that the proposed converter had excellent operating performance.

关 键 词：BOOST变换器 交错并联 开关电容 集成电感 

分 类 号：TM46[电气工程—电器]