含双倍压DCM结构的高增益DC/DC变换器

doi:10.11985/2023.01.010

电气工程学报 ›› 2023, Vol. 18 ›› Issue (1): 94-103.doi: 10.11985/2023.01.010

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含双倍压DCM结构的高增益DC/DC变换器

荣德生¹(), 刘磊¹(), 孙瑄瑨¹(), 胡举爽²()

1.辽宁工程技术大学电气与控制工程学院葫芦岛 125105
2.国网河北省电力有限公司石家庄供电分公司石家庄 050051

收稿日期:2021-05-17 修回日期:2021-07-09 出版日期:2023-03-25 发布日期:2023-04-19
通讯作者: 刘磊，男，1994年生，硕士研究生。主要研究方向为电力电子及其磁集成技术。E-mail：15670334452@163.com
作者简介:荣德生，男，1975年生，博士，教授。主要研究方向为节能型电力电子技术及应用。E-mail：rongdesheng0@163.com
孙瑄瑨，男，1993年生，博士研究生。主要研究方向为电力电子及其磁集成技术。E-mail：1419062334@qq.com
胡举爽，男，1990年生，硕士。主要研究方向为电力电子与电力传动。E-mail：1403436227@qq.com

High Gain DC/DC Converter with Double Voltage DCM Structure

RONG Desheng¹(), LIU Lei¹(), SUN Xuanjin¹(), HU Jushuang²()

1. Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105
2. Shijiazhuang Power Supply Company, State Grid Hebei Electric Power Co., Ltd., Shijiazhuang 050051

Received:2021-05-17 Revised:2021-07-09 Online:2023-03-25 Published:2023-04-19

摘要/Abstract

摘要：

为了增加直流变换器的电压增益，减少开关管的电压应力，将耦合电感倍压单元与二极管-电容(Diode capacitor multiplier, DCM)单元进行组合，提出一种双倍压DCM结构，将该结构引入含输出二极管的非隔离变换器中，不仅能提升该类变换器的电压增益，有效降低器件的电压应力，同时利用结构中的二极管-电容支路作为无源钳位支路吸收漏感能量，提高变换器的效率。并以含双倍压DCM结构的Sepic变换器为例进行了工作模态和工作性能的分析，推导了电感电流临界的工作状态，与同类型变换器进行了对比分析，充分证明了该类变换器具有高增益、低应力的优势。最后，搭建了一个60 W的试验样机，验证了上述理论的正确性。

关键词: 双倍压DCM单元, 高增益, 低电压应力, 无源钳位

Abstract:

To increase the voltage gain of the DC-DC converter, reduce the voltage stress of the switch, combine the coupled inductor multiplier unit with the diode-capacitor multiplier(DCM) unit, and a double DCM structure is proposed and introduced into a non-isolated converter with output diode. Not only the voltage gain of the converter is improved, but also the voltage stress of the semiconductor is reduced. Meanwhile, the diode-capacitor branch in the structure is used as a passive clamping branch to absorb the leakage inductor energy and improve the efficiency of the converter. The working mode and working performance of the proposed SEPIC-based converter are analyzed, which containing a double DCM structure. The working state of the inductor current is analyzed. Compared with the same type converter, the advantages of proposed type of converter with high gain and low stress are fully proven. Finally, a 60 W experimental prototype is built to verify the correctness of the theory.

Key words: Double pressure DCM unit, high gain, low voltage stress, passive clamp

中图分类号:

TM46

荣德生, 刘磊, 孙瑄瑨, 胡举爽. 含双倍压DCM结构的高增益DC/DC变换器[J]. 电气工程学报, 2023, 18(1): 94-103.

RONG Desheng, LIU Lei, SUN Xuanjin, HU Jushuang. High Gain DC/DC Converter with Double Voltage DCM Structure[J]. Journal of Electrical Engineering, 2023, 18(1): 94-103.

图/表 19

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参考文献 17

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变换器	电压增益M_CCM(V_o/V_in)	开关管应力 (V_vpsS/V_o)	输出端二级管应力 (V_vpsD/V_o)
Sepic	$\frac{D}{1-D}$	$\frac{1}{D}$	$\frac{1}{D}$
文献[6]	$\frac{1+\left( N+1 \right)D}{1-D}$	$\frac{1}{1+\left( N+1 \right)D}$	$\frac{1+N}{1+\left( N+1 \right)D}$
文献[8]	${{N}_{1}}+\frac{2-D+{{N}_{2}}}{1-D}$	$\frac{1}{2-D+\left( 1-D \right){{N}_{1}}+{{N}_{2}}}$	$\frac{{{N}_{2}}}{2-D+\left( 1-D \right){{N}_{1}}+{{N}_{2}}}$
文献[9]	${{N}_{1}}+\frac{\left( 1+{{N}_{1}}+{{N}_{2}} \right)D}{1-D}$	$\frac{1}{{{N}_{1}}+D+{{N}_{2}}D}$	$\frac{{{N}_{1}}}{{{N}_{1}}+D+{{N}_{2}}D}$
本文	$\frac{1+{{N}_{1}}+{{N}_{2}}+D}{1-D}$	$\frac{1}{1+{{N}_{1}}+{{N}_{2}}+D}$	$\frac{{{N}_{2}}+1}{1+{{N}_{1}}+{{N}_{2}}+D}$

变换器	电压增益M_CCM(V_o/V_in)	开关管应力 (V_vpsS/V_o)
Buck-Boost变换器+双倍压DCM结构	$\frac{1+D+\left( {{N}_{1}}+{{N}_{2}} \right)}{1-D}$	$\frac{1}{1+\left( {{N}_{1}}+{{N}_{2}} \right)+D}$
Boost变换器+双倍压DCM结构	$\frac{2+\left( {{N}_{1}}+{{N}_{2}} \right)}{1-D}$	$\frac{1}{2+\left( {{N}_{1}}+{{N}_{2}} \right)}$
Sepic变换器+双倍压DCM结构	$\frac{1+D+\left( {{N}_{1}}+{{N}_{2}} \right)}{1-D}$	$\frac{1}{1+\left( {{N}_{1}}+{{N}_{2}} \right)+D}$

参数	数值和型号
输入电压V_in/V	12
输出电压V_o/V	105
额定功率P_o/W	60
耦合电感匝比n	1∶1∶1
励磁电感L_m/μH	65
漏感L_k/μH	1.2
前端电感L₁/μH	50
电容C₁、C₂、C₃、C₄	100 μF/160 V
输出电容C₀	100 μF/250 V
开关管S	IRF540N
二极管	MBR20100CT
开关频率f/kHz	50
占空比	0.6

含双倍压DCM结构的高增益DC/DC变换器

High Gain DC/DC Converter with Double Voltage DCM Structure

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