Research on an Improved Synchronous Rectification Forward Converter

doi:10.11985/2022.04.019

Abstract

Abstract:

Aiming at poor efficiency, inapplicable for wide input voltage occasion and direct conduction under traditional synchronous rectification forward converter, an improved synchronous rectification forward converter is proposed. The MOSFET of the improved converter is driven by both ends voltage of auxiliary winding. This converter has high efficiency, applicable for wide input voltage occasion and can solve the problem of direct conduction. The operating principle and the operating mode of the improved synchronous rectification forward converter are analyzed. The Euler-lagrange(EL) model of the synchronous rectification forward converter is established. Based on passivity based control theory, a passivity based controller of the improved synchronous rectification forward converter is designed by damping injection method. Good dynamic and static performance and robustness to load change of the improved synchronous rectification forward converter is achieved through the passivity-based controller. The simulation and experimental results show that the converter and its passivity based controller are feasible.

Key words: Synchronous rectification, forward converter, passivity based control, damping injecting

CLC Number:

TM46

HU Jingwei, WANG Jiuhe, QU Qiushi. Research on an Improved Synchronous Rectification Forward Converter[J]. Journal of Electrical Engineering, 2022, 17(4): 193-202.

Figures/Tables 23

References 21

[1]	李龙春, 嵇保健, 洪峰, 等. 1500V三电平正激变换器[J]. 电工技术学报, 2018, 33(9):2044-2054.
	LI Longchun, JI Baojian, HONG Feng, et al. 1500V three-level forward converter[J]. Transactions of China Electrotechnical Society, 2018, 33(9):2044-2054.
[2]	HOANG N K, LEE S, WOO Y J. A zero current detector with low negative inductor current using forced freewheel switch operation in synchronous DC-DC converter[C]// 2014 IEEE Fifth International Conference on Communications and Electronics (ICCE). IEEE, 2014:318-322.
[3]	李佳晨, 彭祥宇, 吕征宇. 一种新型自驱动同步整流电路[J]. 电力电子技术, 2018, 52(1):67-69.
	LI Jiachen, PENG Xiangyu, LÜ Zhengyu. A new self-driven synchronous rectification circuit[J]. Power Electronics, 2018, 52(1):67-69.
[4]	黄莹. PFM模式同步整流DC-DC升压转换器芯片的设计[D]. 南京: 南京邮电大学, 2019.
	HUANG Ying. Design of synchronous rectification DC-DC boost converter in PFM mode[D]. Nanjing: Nanjing University of Posts and Telecommunications, 2019.
[5]	陈增禄, 杨欢, 方日, 等. 同步整流自适应电流驱动技术[J]. 电力电子技术, 2018, 52(4):69-72.
	CHEN Zenglu, YANG Huan, FANG Ri, et al. Research on adaptive current self-driven circuit of synchronous rectification[J]. Power Electronics, 2018, 52(4):69-72.
[6]	张博彦, 齐铂金, 周阳. 基于模糊PID算法的半桥DC/DC控制器的优化设计[J]. 电力电子技术, 2018, 52(9):74-77.
	ZHANG Boyan, QI Bojin, ZHOU Yang. Optimal design of half-bridge DC/DC controller based on fuzzy PID algorithm[J]. Power Electronics, 2018, 52(9):74-77.
[7]	梁光耀, 杜贵平, 刘源俊. 宽工作范围LLC谐振变换器模糊PID控制策略[J]. 电源学报, 2020, 18(2):138-144.
	LIANG Guangyao, DU Guiping, LIU Yuanjun. Fuzzy PID control strategy for LLC resonant converter with wide operating range[J]. Journal of Power Supply, 2020, 18(2):138-144.
[8]	陆翔, 谢运祥, 桂存兵, 等. 基于无源性与滑模变结构控制相结合的VIENNA整流器控制策略[J]. 电力自动化设备, 2014, 34(10):110-115.
	LU Xiang, XIE Yunxiang, GUI Cunbing, et al. VIENNA rectifier control strategy based on passivity control and sliding mode variable structure control[J]. Electric Power Automation Equipment, 2014, 34(10):110-115.
[9]	王孝洪, 吴丰, HOANG T T G, 等. 线性自抗扰控制在全桥DC-DC变换器中的应用[J]. 控制理论与应用, 2018, 35(11):1610-1616.
	WANG Xiaohong, WU Feng, HOANG T T G, et al. Application of linear active disturbance rejection control in full-bridge DC-DC converters[J]. Control Theory & Applications, 2018, 35(11):1610-1616.
[10]	胡经纬, 王久和, 唐骐. 基于EL模型的Cuk变换器无源控制器[J]. 北京信息科技大学学报, 2013, 28(5):67-71.
	HU Jingwei, WANG Jiuhe, TANG Qi. Passivity based controller of Cuk converter based on EL model[J]. Journal of Beijing Information Science and Technology University, 2013, 28(5):67-71.
[11]	崔健, 王久和. 基于最优阻尼注入的Buck变换器无源控制研究[J]. 电气工程学报, 2018, 13(6):7-13.
	CUI Jian, WANG Jiuhe. Study of passivity-based control of Buck converter based on optimal damping injection[J]. Journal of Electrical Engineering, 2018, 13(6):7-13.
[12]	李洪珠, 范茏茏. 双管正激变换器多种导磁材料电磁集成[J]. 电气工程学报, 2022, 17(1):148-155.
	LI Hongzhu, FAN Longlong. Dual-tube forward converter with electromagnetic integration of various magnetic materials[J]. Journal of Electrical Engineering, 2022, 17(1):148-155.
[13]	刘树林, 张海亮, 王航杰, 等. 抑制输出能量倒灌的二次侧自复位正激变换器的能量传输过程分析[J]. 电工技术学报, 2020, 35(增刊2):477-483.
	LIU Shulin, ZHANG Hailiang, WANG Hangjie, et al. A new forward converter with self-magnetically reset on the secondary side[J]. Transactions of China Electrotechnical Society, 2020, 35(Suppl. 2):477-483.
[14]	王志强. 精通开关电源设计[M]. 北京: 人民邮电出版社, 2013.
	WANG Zhiqiang. Proficient in switching power supply design[M]. Beijing: The People’s Posts and Telecommunications Press, 2013.
[15]	YAO J, ZHENG K, ABRAMOVITZ A. Dynamic analysis of the switched inductor buck converter[C]// Annual Conference of the IEEE Industrial Electronics Society, 2019, 1:1721-1725.
[16]	丁志刚, 汪世平, 周华良. 一种新型外驱动同步整流电路[J]. 电力系统自动化, 2012, 36(3):97-100.
	DING Zhigang, WANG Shiping, ZHOU Hualiang. A novel out-driving synchronous rectifier circuit[J]. Automation of Electric Power Systems, 2012, 36(3):97-100.
[17]	胡经纬, 王久和, 唐骐. 一种新型高增益Cuk变换器研究[J]. 电工技术学报, 2014, 29(增刊1):337-344.
	HU Jingwei, WANG Jiuhe, TANG Qi. Research on a new type of high gain Cuk converter[J]. Transactions of China Electrotechnical Society, 2014, 29(Suppl. 1):337-344.
[18]	王振业, 王久和, 张梦壕. 多变换器系统无源控制策略研究[J]. 电气工程学报, 2022, 17(1):63-70.
	WANG Zhenye, WANG Jiuhe, ZHANG Menghao. Research on passivity-based control strategy of multi-converter system[J]. Journal of Electrical Engineering, 2022, 17(1):63-70.
[19]	GU Yunjie, LI Wuhua, HE Xiangning. Passivity-based control of DC microgrid for self-disciplined stabilization[J]. IEEE Transactions on Power System, 2015, 30(5):2623-2632. doi: 10.1109/TPWRS.2014.2360300
[20]	周痛快, 宾洋, 罗文广, 等. Buck变换器的模糊PI控制研究[J]. 广西科技大学学报, 2021, 32(3):74-79.
	ZHOU Tongkuai, LUO Wenguang, et al. Research on fuzzy PI control of Buck converter[J]. Journal of Guangxi University of Science and Technology, 2021, 32(3):74-79.
[21]	孙文静. Buck型DC-DC变换器的滑模控制研究[D]. 北京: 北京交通大学, 2015.
	SUN Wenjing. Research on sliding mode control for DC-DC Buck converter[D]. Beijing: Beijing Jiaotong University, 2015.

参数	传统型	改进型
输入电压	E	E
负载电流	I_o	I_o
变压器原边电压	V_N1	V_N1
续流管驱动电压	V_N1N₂/N₁	V_N1N₃/N₁
整流管驱动电压	EN₂/N₁	EN₄/N₁
续流管栅极电容放电路径	Q₂栅极直接至副边GND	Q₂栅极直接至副边GND
整流管栅极电容放电路径	Q₃栅极直接至副边GND	Q₃栅极经变压器N₄绕组后至副边GND
主要发热器件	变压器T、滤波电感L、原边开关管Q₁、副边续流管Q₂、副边整流管Q₃	变压器T、滤波电感L、原边开关管Q₁、副边续流管Q₂、副边整流管Q₃

参数	数值/型号	备注
输入电压/V	10~36	—
输出电压/V	5	—
开关频率/kHz	250	—
恒功率负载/W	25	—
电阻负载/Ω	1	—
原边开关管Q₁	SI4190DY	VISHAY公司
副边续流管Q₂	IRF7842	IR公司
副边整流管Q₃	IRF7842	IR公司
半导体器件D₁~D₅	BAS21H	NXP公司
半导体器件Q₄~Q₆	2N7002E	VISHAY公司

参数	输入电压条件/V
参数	10	28	36
输入空载电流/mA	90.7	53.4	62.7
输入满载电流/A	5.596 8	1.978 0	1.529 8
输出空载电压/V	5.016 0	5.016 0	5.019 7
输出满载电压/V	4.994 1	4.994 2	5.001 1
效率(%)	89.231	90.174	90.809
电压调整率/mV	7.0
负载调整率/mV	21.80
输出电压纹波(满载)/mV	64	66	58