Zero-Ripple High Voltage Gain DC-DC Converter Based on New Voltage-Lifting Unit

doi:10.16628/j.cnki.2095-8188.2021.04.012

Abstract

Abstract:

The high-voltage gain DC-DC converter is an effective way to achieve grid connection of low voltage output new energy systems such as photovoltaic power generation.In this paper,a zero-ripple high voltage-gain DC-DC converter was proposed.It can not only get the voltage gain that can be adjusted according to the number of voltage-lifting units,but also the voltage stresses of the power devices are lower.The input current characterized with very small ripple close to zero can be achieved by coupling the two inductances of the quadratic Boost converter and suitably setting the coupling coefficients and turns ratio reasonably.The construction process,working principle,and steady-state characteristics of the converter are analyzed,and the theoretical research is verified by building an experimental prototype.The experimental results verify the correctness of the theoretical analysis.

Key words: high voltage-gain DC-DC converter, quadratic Boost converter, voltage-lifting unit, zero-ripple

CLC Number:

TM46

SUN Yupu, XU Yuzhen. Zero-Ripple High Voltage Gain DC-DC Converter Based on New Voltage-Lifting Unit[J]. LOW VOLTAGE APPARATUS, 2021, 0(4): 63-69.

Figures/Tables 16

References 15

[1]	李新强. 新能源领域电力电子技术应用及其检测评价技术新发展[J]. 电器与能效管理技术, 2019(4):1-8.
[2]	LI W, HE X. Review of non-isolated high step-up DC/DC converters in photovoltaic grid-connected applications[J]. IEEE Transactions on Industrial Electronics, 2012,58(4):1239-1250. doi: 10.1109/TIE.2010.2049715
[3]	吴刚, 阮新波, 叶志红. 采用开关电容的非隔离型高升压比直流变换器[J]. 中国电机工程学报, 2015,35(2):442-450.
[4]	陈红星, 林维明, 曾涛. 一种可扩展单元的高增益升压Cuk电路[J]. 中国电机工程学报, 2019,39(23):7013-7022,7114.
[5]	李洪珠, 刘飞扬, 李洪璠. 基于新型耦合电感倍压单元的高增益变换器[J]. 电工电能新技术, 2020,39(2):21-29.
[6]	段宛宜, 王辉. 一种Boost级联式高增益DC/DC变换器[J]. 电器与能效管理技术, 2020(2):54-60.
[7]	CACAU R G D A, LAZZARIN T B, VILLANUEVA M C T, et al. A high step-up non-isolated DC-DC converter based on the integration of conventional boost converters[C]// 2016 IEEE 25th International Symposium on Industrial Electronics(ISIE), 2016: 408-420.
[8]	MAROTI P K, PADMANABAN S, HOLM-NIELSEN J B, et al. A new structure of high voltage gain Sepic converter for renewable energy applications[J]. IEEE Access, 2019,7:89857-89868. doi: 10.1109/Access.6287639
[9]	LOERA-PALOMO R, MORALES-SALDANA J A. Family of quadratic step-up DC-DC converters based on non-cascading structures[J]. IET Power Electronics, 2015,8(5):793-801. doi: 10.1049/pel2.v8.5
[10]	刘朔阳. 磁集成高增益低纹波DC/DC变换器技术研究[D]. 哈尔滨:哈尔滨工业大学, 2018.
[11]	陈章勇, 许建平, 吴建雪. 基于耦合电感倍压单元的零输入电流纹波高增益非隔离变换器[J]. 电工技术学报, 2015,30(18):25-34.
[12]	CHEN Z, ZHOU Q, XU J. Coupled-inductor Boost integrated flyback converter with high-voltage gain and ripple-free input current[J]. IET Power Electronics, 2015,8(2):213-220. doi: 10.1049/pel2.v8.2
[13]	PRUDENTE M, PFITSCHER L L, EMMENDOERFER G, et al. Voltage multiplier cells applied to non-isolated DC-DC converters[J]. IEEE Transactions Power Electron, 2008,23(2):871-887. doi: 10.1109/TPEL.2007.915762
[14]	HOSOKI R, KOIZUMI H. High-step-up DC-DC converter using voltage multiplier cell with ripple free input current[C]// Industrial Electronics Society,IECON 2013,Conference of the IEEE, 2013: 834-839.
[15]	PAN C T, CHENG M C, LAI C M. Current ripple-free module integrated converter(MIC) with more precise maximum power tracking control for PV energy harvesting[J]. IEEE Transactions on Industry Applications, 2015,51(1):271-278. doi: 10.1109/TIA.2014.2326076

参数	数值
电感L₁/μH	320
电感L₂/mH	1.1
电感L₁、L₂互感M/μH	540
电感L₁₀/mH	2
电感L₂₀/mH	2
电容C₁、C₂、C₁₂、C₂₂/μF	56(450 V)
电容C₁₁、C₂₁/μF	4.75(630 V)

电压	实验值	理论分析值
U_VD1/V	95	97.9
U_VD2/V	104	101.9
U_VD3/V	200	199.9
U_VD10/V	196	199.9
U_VD20/V	196	199.9

电压	实验值	理论分析值
U_C1/V	90.3	97.9
U_C11/V	110.7	101.9
U_C21/V	94.8	101.9
U_C2/V	190.3	198.0
U_C12/V	97.8	101.9
U_C22/V	96.7	101.9