基于耦合电感的零输入电流纹波高增益DC/DC变换器

doi:10.16628/j.cnki.2095-8188.2023.12.006

摘要/Abstract

摘要：

针对传统DC/DC变换器电压增益低、开关器件应力高、输入电流纹波大的缺点,提出了一种零输入电流纹波的高增益DC/DC变换器,实现了开关器件电压应力的降低和输入输出电压增益的提高。同时,在占空比不受限、不增加额外的辅助电路的情况下,利用耦合电感技术来消除输入电流纹波,减少了磁芯数量。详细分析了变换器的工作原理和零输入电流纹波的实现机理。最后,搭建1台额定功率400 W的实验样机,验证了理论分析的正确性。

关键词: DC/DC变换器, 高增益, 耦合电感, 输入电流零纹波, 低电压应力

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

中图分类号:

TM46

安金海, 邢星围, 张畅. 基于耦合电感的零输入电流纹波高增益DC/DC变换器[J]. 电器与能效管理技术, 2023, 0(12): 39-47.

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.

图/表 13

图1

图2

图3

图4

图5

图6

表1

图7

表2

样机参数

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

表2

图8

图9

图10

图11

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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