Zero Input Current Ripple High Gain DC/DC Converter Based on Coupling Inductor

doi:10.16628/j.cnki.2095-8188.2023.12.006

Abstract

Abstract:

A high gain DC/DC converter with zero input current ripple is proposed to address the drawbacks of low voltage gain, high switching device stress, and large input current ripple in traditional DC/DC converters. The reduction in switching device voltage stress and the increase in input output voltage gain are achieved. At the same time, without limiting the duty cycle and adding additional auxiliary circuits, coupling inductance technology is used to eliminate input current ripple and reduce the number of magnetic cores. A detailed analysis of the working principle of the converter and the implementation mechanism of zero input current ripple are provided. Finally, the correctness of the theoretical analysis is verified by constructing an experimental prototype with a rated power of 400 W.

Key words: DC/DC converter, high gain, coupling inductor, zero ripple of input current, low voltage stress

CLC Number:

TM46

AN Jinhai, XING Xingwei, ZHANG Chang. Zero Input Current Ripple High Gain DC/DC Converter Based on Coupling Inductor[J]. LOW VOLTAGE APPARATUS, 2023, 0(12): 39-47.

Figures/Tables 13

参数	数值或型号
输入电压u_in/V	40
输出电压u_o/V	400
输出功率P/W	400
开关频率f_s/kHz	200
开关占空比D	0.58
开关管(VT1、VT2)	IPP410N30N
二极管(VD1、VD2、VD3)	IDT12S60C
电容(C₁、C₂、C₃、C₄)/μF	30
自感L₁/μH	378.8
自感L₂/μH	146.4
自感L₃/μH	307.3
互感L₁₃/μH	305.9
电感匝数/匝	N₁=52,N₂=29,N₃=47
耦合电感匝数比	$n 3 1$ =1.1

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	基本Boost	文献[11]	文献[13]	文献[16]	文献[19]	所提变换器
开关管数量	1	5	1	2	1	2
二极管数量	1	-	2	n	1	3
电感数量	1	3	4(1耦合)	2	3(1耦合)	2(1耦合)
电容数量	1	5	6	n	3	4
电压增益	1/(1-D)	(2+D)/(1-D)	(1+D)/(1-D)	(n+1)/(1-D)	n·D/(1-D)	[1+ D(2-D)]/(1-D)²
减小纹波方式	—	有源辅助电路	无源辅助电路	交错导通技术	耦合电感	耦合电感
辅助电路	无	有	有	无	无	无
纹波大小	大	零	零	小	零	零
控制难度	简单	复杂	简单	复杂	简单	简单