Zero Ripple High Gain Combined Sepic Converter Based on Coupled Inductor

doi:10.16628/j.cnki.2095-8188.2021.11.011

Abstract

Abstract:

High-gain DC-DC converter is an important part of new energy generation grid connection.In order to obtain higher voltage gain,a zero ripple high gain combined Sepic converter based on coupled inductor is proposed.The basic Sepic topology is improved and intergrated to form the new combined Sepic topology,and to further enhance the converter voltage gain,a coupled inductor is introduced to eventually achieve a larger voltage gain with a smaller duty cycle.Through the reasonable configuration of the two coupled inductor and parameters,zero ripple of the input current is achieved approximately.An experimental prototype with 48 V input voltage,400 V output voltage and 100 W rated power is built.The experimental results are consistent with the theoretical results,which verifies the correctness of the theoretical analysis.

Key words: new energy power generation, Sepic converter, coupled inductor, zero ripple, high gain

CLC Number:

TM46

ZHANG Zhong, XU Yuzhen. Zero Ripple High Gain Combined Sepic Converter Based on Coupled Inductor[J]. LOW VOLTAGE APPARATUS, 2021, 0(11): 73-79.

Figures/Tables 10

主要器件参数	数值或型号
电感 $L 1 /$ μH	550
电感 $L 2 /$ μH	370
电感L₁、L₂互感M/μH	370
耦合电感 $L 31 /$ μH	500
耦合电感 $L 32 /$ mH	2
漏感L₃₃/μH	2.58
耦合电感L₃₁、L₃₂匝比N	2
电容C₁、C₂、C₃、C₄/μF	2.2 (630 V薄膜)
电容C₅、C₆/μF	56 (450 V)
功率开关管VT	60R070F7
二极管VD1	STTH15L06D
二极管VD2、VD3	STTH8R04D
二极管VD4	HERA806G

References 23

[1]	李建林, 孟高军, 葛乐, 等. 全球能源互联网中的储能技术及应用[J]. 电器与能效管理技术, 2020(1):1-8.
[2]	TUMMURU N R, ISHRA M K, SRINIVAS S. Dynamic energy management of hybrid energy storage system with high-gain PV converter[J]. IEEE Transactions on Energy Conversion, 2015, 30(1):150-160. doi: 10.1109/TEC.2014.2357076
[3]	KONG X, KHAMBADKONE A M. Analysis and implementation of a high efficiency,interleaved current-fed full bridge converter for fuel cell system[J]. IEEE Transactions on Power Electronics, 2007, 22(2):543-550. doi: 10.1109/TPEL.2006.889985
[4]	ILLAPAWICHARN Y. An isolated snubberless single-switched boost converter for high step-up conversion applications [C]//2016 13th International Conference on Electrical Engineering/Electronics,Computer,Telecommunications and Information Technology (ECTI-CON), 2016:1-4.
[5]	LU S, SUN K, CAO G, et al. A high step-up modular isolated DC/DC converter for large capacity photovoltaic generation system integrated into MVDC grids [C]//2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), 2019:1915-1920.
[6]	CHEN S, LIANG T, YANG L, et al. A cascaded high step-up DC/DC converter with single switch for microsource applications[J]. IEEE Transactions on Power Electronics, 2011, 26(4):1146-1153. doi: 10.1109/TPEL.2010.2090362
[7]	LEE S, DO H. High step-up coupled-inductor cascade boost DC/DC converter with lossless passive snubber[J]. IEEE Transactions on Industrial Electronics, 2018, 65(10):7753-7761. doi: 10.1109/TIE.41
[8]	DUSMEZ S, HASANZADEH A, KHALIGH A. Comparative analysis of bidirectional three-level DC/DC converter for automotive applications[J]. IEEE Transactions on Industrial Electronics, 2015, 62(5):3305-3315. doi: 10.1109/TIE.2014.2336605
[9]	曾怡达, 李宝, 唐丽, 等. 一种带开关电容的二次型高增益Boost变换器的研究[J]. 电源学报, 2018, 16(1):8-13.
[10]	马智文, 曾怡达, 杨辉金. 一种新型开关电感、开关电容的高增益Boost变换器[J]. 电源学报, 2018, 16(2):119-123.
[11]	陈聘, 李少纲. 开关电感准Z源逆变器新型PWM调制策略的研究[J]. 电器与能效管理技术, 2017(20):44-50.
[12]	陈浩, 胡雪峰, 王建章. 一种高增益交错耦合电感DC/DC变换器[J]. 电源学报, 2019, 17(6):41-49.
[13]	FOROUZESH M, SHEN Y, YARI K, et al. High-efficiency high step-up DC/DC converter with dual coupled inductors for grid-connected photovoltaic systems[J]. IEEE Transactions on Power Electronics, 2018, 33(7):5967-5982. doi: 10.1109/TPEL.2017.2746750
[14]	CHEN S, LAO M, HSIEH Y, et al. A novel switched-coupled-inductor DC/DC step-up converter and its derivatives[J]. IEEE Transactions on Industry Applications, 2015, 51(1):309-314. doi: 10.1109/TIA.2014.2332642
[15]	KHOSROSHAHI A E, WANG L, DADASHZADEH H, et al. A two-stage coupled-inductor-based cascaded DC-DC converter with a high voltage gain [C]//IEEE Canadian Conference of Electrical and Computer Engineering (CCECE), 2019:6-10.
[16]	PACKNEZHAD M, FARZANEHFARD H. Soft switching high step up/down converter using coupled inductors with minimum number of components[J]. IEEE Transactions on Industrial Electronics, 2021, 68(9):7938-7945. doi: 10.1109/TIE.2020.3013792
[17]	陈章勇, 许建平, 吴建雪, 等. 耦合电感零输入纹波高增益非隔离DC/DC变换器[J]. 中国电机工程学报, 2014, 34(33):5836-5845.
[18]	刘悦新, 王磊. 一种带纹波抑制的交错并联Buck/Boost变换器轻载效率研究[J]. 电源学报, 2016, 14(5):157-165.
[19]	MUTHUKRISHNAN P, DHANASEKARAN R. A high step-up converter with a voltage multiplier & coupled inductor module for photovoltaic system [C]//2014 IEEE International Conference on Advanced Communications,Control and Computing Technologies, 2014:1041-1045.
[20]	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.
[21]	LEU C, LI M. A novel current-fed Boost converter with ripple reduction for high-voltage conversion applications[J]. IEEE Transactions on Industrial Electronics (1982), 2010, 57(6):2018-2023.
[22]	WANG J, DUNFORD W G, MAUCH K. Modified Boost converter with continuous inductor current mode and ripple free input current [C]//IEEE APEC, 1996:390-396.
[23]	赵宝国, 李国栋, 陈博, 等. 一种可用于直流变压器的多谐振变换器等效建模及分析方法[J]. 高压电器, 2019, 55(9):26-33.