基于SiC器件的隔离双向混合型LLC谐振变换器

doi:10.19595/j.cnki.1000-6753.tces.211378

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (5165 KB) HTML
输出: BibTeX | EndNote (RIS)

摘要针对传统双有源桥型直流变换器的软开关范围窄、开关频率低等问题,该文提出一种隔离双向混合型LLC谐振变换器,适用于可再生能源分布式发电系统的储能结构中。在不增加使用额外器件的条件下,通过不同调制方案转换,该变换器可以在全桥变换器、双半桥变换器和单半桥变换器三种工作模式下混合运行。在变压器励磁电感协助下,三种不同工作模式无论正向或反向运行,均可实现所有开关管的零电压开通,以减少开关管的开通损耗,实现高效的双向功率转换和宽电压增益调节,提高轻载下的变换器工作效率,且三种工作运行模式可以平滑、稳定地过渡切换。最后搭建一台基于SiC器件的800W样机,实验结果证明了该变换器拓扑及其控制方法的可行性、有效性和稳定性。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	朱小全
	刘康
	叶开文
	蒋黎明
	金科

关键词 ： LLC谐振变换器, 分布式发电系统, 双向运行工作, 零电压开通, SiC器件

Abstract：The traditional dual active bridge DC-DC converter has the problems of narrow switching range and low switching frequency. Therefore, an isolated bidirectional hybrid LLC resonant converter is proposed for the energy storage structure of renewable energy distributed power generation systems. The converter can operate in three modes of full-bridge LLC converter (FLLC), dual-phase half-bridge LLC converter (DLLC) and single-phase half-bridge LLC converter (SLLC) by different modulation schemes without using additional devices. With the help of the magnetizing inductance of transformer, three different operating modes can realize the zero-voltage switching turn-on for all the MOSFETs on primary and secondary sides, regardless of the forward or backward operation, which can reduce the turn-on loss of switches, achieve high-efficiency bidirectional power conversion and wide voltage gain adjustment, and improve the efficiency of the converter under light load. And these three operating modes can be smoothly and stably transitioned. Finally, an 800W experimental prototype based on Silicon Carbide (SiC) devices is built. The experimental results verify the feasibility, effectiveness and stability of the proposed circuit topology and its control method.

Key words： LLC resonant converter distributed generation system bidirectional operation zero-voltage switching SiC device

收稿日期: 2021-09-03

PACS:

TM46

基金资助:中央高校基本科研业务费（1003-56XAA21057）和南京航空航天大学科研启动基金（1003-YAH19087）资助项目

通讯作者: 朱小全,男,1990年生,讲师,硕士生导师,研究方向新能源功率电子变换技术。E-mail: ijruexq@nuaa.edu.cn

作者简介: 刘康,男,1998年生,硕士研究生,研究方向为功率电子变换技术。E-mail: liukang@nuaa.edu.cn

引用本文:

朱小全, 刘康, 叶开文, 蒋黎明, 金科. 基于SiC器件的隔离双向混合型LLC谐振变换器[J]. 电工技术学报, 2022, 37(16): 4143-4154. Zhu Xiaoquan, Liu Kang, Ye Kaiwen, Jiang Liming, Jin Ke. Isolated Bidirectional Hybrid LLC Converter Based on SiC MOSFET. Transactions of China Electrotechnical Society, 2022, 37(16): 4143-4154.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.211378 https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I16/4143

[1] Sun Bo, Dragičević T, Freijedo F D, et al.A control algorithm for electric vehicle fast charging stations equipped with flywheel energy storage systems[J]. IEEE Transactions on Power Electronics, 2016, 31(9): 6674-6685.
[2] 江添洋, 张军明, 汪槱生. 同步控制双向LLC谐振变换器[J]. 电工技术学报, 2015, 30(12): 87-96.
Jiang Tianyang, Zhang Junming, Wang Yousheng.Synchronous control bidirectional LLC resonant converter[J]. Transactions of China Electrotechnical Society, 2015, 30(12): 87-96.
[3] 鲁思兆, 吴雷, 李思奇, 等. 零电压开关N型交并三电平双向DC-DC变换器[J]. 电工技术学报, 2020, 35(增刊2): 461-469, 493.
Lu Sizhao, Wu Lei, Li Siqi, et al.Zero voltage switching N-type interleaved three-level bidirectional DC-DC converter[J]. Transactions of China Electro- technical Society, 2020, 35(S2): 461-469, 493.
[4] Liserre M, Sauter T, Hung J Y.Future energy systems: integrating renewable energy sources into the smart power grid through industrial electronics[J]. IEEE Industrial Electronics Magazine, 2010, 4(1): 18-37.
[5] 杨东江, 段彬, 丁文龙, 等. 一种带辅助双向开关单元的宽输入电压范围LLC谐振变换器[J]. 电工技术学报, 2020, 35(4): 775-785.
Yang Dongjiang, Duan Bin, Ding Wenlong, et al.An improved LLC resonant converter with auxiliary bi-directional switch for wide-input-voltage range applications[J]. Transactions of China Electrotechnical Society, 2020, 35(4): 775-785.
[6] 冯兴田, 邵康, 崔晓, 等. 基于多模态切换的宽电压增益LLC谐振变换器控制策略[J]. 电工技术学报, 2020, 35(20): 4350-4360.
Feng Xingtian, Shao Kang, Cui Xiao, et al.Control strategy of wide voltage gain LLC resonant converter based on multi-mode switching[J]. Transactions of China Electrotechnical Society, 2020, 35(20): 4350-4360.
[7] 刘瑞欣, 王议锋, 韩富强, 等. 应用于宽输入电压范围的两模式切换型软开关谐振直流变换器[J]. 电工技术学报, 2020, 35(22): 4739-4749.
Liu Ruixin, Wang Yifeng, Han Fuqiang, et al.A two-mode soft-switching resonant DC-DC converter for wide input voltage range applications[J]. Transa- ctions of China Electrotechnical Society, 2020, 35(22): 4739-4749.
[8] 陈梦颖, 王议锋, 陈庆, 等. 一种可变结构型高效宽增益多谐振软开关直流变换器[J]. 电工技术学报, 2021, 36(12): 1000-6753.
Chen Mengying, Wang Yifeng, Chen Qing, et al.A variable topology multi-resonant soft-switching DC-DC converter with high efficiency and wide gain[J]. Transactions of China Electrotechnical Society, 2021, 36(12): 1000-6753.
[9] Weise N D, Castelino G, Basu K, et al.A single-stage dual-active-bridge-based soft switched AC-DC con- verter with open-loop power factor correction and other advanced features[J]. IEEE Transactions on Power Electronics, 2014, 29(8): 4007-4016.
[10] Liao Yuefeng, Xu Guo, Sun Yao, et al.Single-stage DAB-LLC hybrid bidirectional converter with tight voltage regulation under DCX operation[J]. IEEE Transactions on Industrial Electronics, 2021, 68(1): 293-303.
[11] Everts J, Krismer F, Jeroen V, et al.Optimal ZVS modulation of single-phase single-stage bidirectional DAB AC-DC converters[J]. IEEE Transactions on Power Electronics, 2014, 29(8): 3954-3970.
[12] Jauch F, Biela J.Combined phase shift and frequency modulation of a dual active bridge AC-DC converter with PFC[J]. IEEE Transactions on Power Electronics, 2016, 31(12): 1.
[13] Wu Hongfei, Ding Shun, Sun Kai, et al.Bidirectional soft-switching series-resonant converter with simple PWM control and load-independent voltage-gain characteristics for energy storage system in DC microgrids[J]. IEEE Journal of Emerging & Selected Topics in Power Electronics, 2017, 5(3): 995-1007.
[14] Yaqoob M, Loo K H, Lai Y M.Fully soft-switched dual-active-bridge converter with switched- impedance- based power control[J]. IEEE Transactions on Power Electronics, 2018, 33(11): 9267-9281.
[15] Wu Hongfei, Sun Kai, Li Yuewei, et al.Fixed- frequency PWM-controlled bidirectional current-fed soft-switching series-resonant converter for energy storage applications[J]. IEEE Transactions on Industrial Electronics, 2017, 64(8): 6190-6201.
[16] Teerakawanich N, Johnson C M.Design optimization of quasi-active gate control for series-connected power devices[J]. IEEE Transactions on Power Elec- tronics, 2014, 29(6): 2705-2714.
[17] Diab M S, Yuan Xibo.A quasi-three-level PWM scheme to combat motor overvoltage in SiC-based single-phase drives[J]. IEEE Transactions on Power Electronics, 2020, 35(12): 12639-12645.
[18] 张建忠, 吴海富, 张雅倩, 等. 一种SiC MOSFET谐振门极驱动电路[J]. 电工技术学报, 2020, 35(16): 3453-3459.
Zhang Jianzhong, Wu Haifu, Zhang Yaqian, et al.A resonant gate driver for SiC MOSFET[J]. Transa- ctions of China Electrotechnical Society, 2020, 35(16): 3453-3459.
[19] 李先允, 卢乙, 倪喜军, 等. 一种改进SiC MOSFET开关性能的有源驱动电路[J]. 中国电机工程学报, 2020, 40(18): 5760-5770.
Li Xianyun, Lu Yi, Ni Xijun, et al.An active gate driver for improving switching performance of SiC MOSFET[J]. Proceedings of the CSEE, 2020, 40(18): 5760-5770.
[20] 李国文, 杭丽君, 童安平, 等. 串扰有源抑制型SiC MOSFET驱动方法[J]. 中国电机工程学报, 2021, 41(11): 3915-3923.
Li Guowen, Hang Lijun, Tong Anping, et al.The driver design of SiC MOSFET with active crosstalk suppression[J]. Proceedings of the CSEE, 2021, 41(11): 3915-3923.