基于堆叠滤波结构的高电压比低纹波隔离型DC-DC制氢变换器

doi:10.19595/j.cnki.1000-6753.tces.231074

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摘要

氢能是未来新能源电力系统中一种重要的储能方式,DC-DC制氢变换器则是连接新能源系统直流母线和电解槽的关键设备。在制氢这种大电流应用场景中,现有的大电流DC-DC变换器拓扑通常难以兼顾高效率、高电压转换比和低输出电流纹波等指标要求。为此该文提出一种基于堆叠滤波结构的DC-DC制氢变换器,该堆叠滤波结构是简单的软开关电路,具有低功耗特点,可并联于变换器输出侧有源补偿输出电流纹波,使得纹波消除不再依赖繁重的无源滤波器和高开关频率,从而提升变换器效率。此外,提出一种半波导通控制方式,该控制作用于变压器二次侧的两相交错Buck电路,可有效提高变换器的电压转换比。分别对提出的制氢变换器的拓扑原理、控制方式、参数选取和性能进行了详细的理论分析,最后通过PSIM仿真和240 W/20 A的实验样机对DC-DC制氢变换器进行了验证。

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	刘海军
	张理
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关键词 ：制氢变换器, 堆叠滤波结构, 隔离型DC-DC, 低输出电流纹波, 高电压转换比

Abstract：

Hydrogen energy is an important energy storage method in the future renewable energy power system, and the hydrogen converter is a key device connecting the power system and electrolyzer. The primary task of the hydrogen converter is to provide high current, low voltage DC power to facilitate hydrogen production in the electrolyzer. However, the continuous impact of the output current ripple from the hydrogen converter on the internal components of the electrolyzer leads to a shortened lifespan and reduced efficiency in hydrogen production. Consequently, design requirements for hydrogen converters in these applications typically encompass low current ripple, cost-effectiveness, high efficiency, and high voltage conversion ratio.
This paper proposes a novel high-conversion-ratio low-ripple isolated DC-DC hydrogen converter, utilizing a stacked filter structure. The Stacked Filter Structure Circuit (SFSC) is implemented in parallel with the output side of the converter to actively compensate for output current ripple, enabling zero-current ripple output regardless of the filter inductance, switching frequency, and duty cycle. The SFSC, a simple soft-switching circuit, exhibits low power consumption characteristics. To enhance the output current capability, an interleaved parallel Buck circuit is employed on the output side of the converter. This circuit employs a half-wave conduction control method, effectively improving the voltage conversion ratio of the converter without requiring additional components.
The proposed hydrogen converter topology utilizes an isolated transformer T1 with a center tap. The primary side of the transformer is connected to a full bridge circuit, converting the DC voltage V_in into an AC voltage. The duty cycle of the full bridge circuit is 0.5, and the switching frequency is f_H. The secondary side of the transformer consists of a two-phase interleaved Buck circuit and a parallel circuit with SFSC. The two-phase interleaved Buck circuit serves to further reduce the voltage and increase the output current level. The two-phase interleaved circuit adopts half-wave conduction control, meaning that S_P1 is only turned on during the conduction period of S₁, and S_P2 is only turned on during the non-conduction period of S₁. The PWM signals of S_P1 and S_P2 have the same duty cycle D_P and switching period T_P. In order to maintain current symmetry in the two-phase parallel circuit, the switching frequency f_P of S_P1 and S_P2 needs to be set as an even multiple of f_H. The SFSC is connected in parallel with the output side of the two-phase interleaved Buck circuit, which consists of only AC current with no DC component. In this circuit, C_S、S_C1、S_C2, and L_C form a loadless Boost circuit, wherein the switching transistor S_C1 replaces the traditional freewheeling diode in the circuit. By utilizing the switching action of S_C1 and the conduction of its anti-parallel diode, capacitor C_S can achieve charging and discharging, overcoming the issue of conventional Boost circuits being unable to operate under loadless conditions.

This paper provides a detailed theoretical analysis of the proposed hydrogen converter topology, control method, parameter selection, and performance. The analysis is supported by simulations and experimental prototypes. The results show that the SFSC accounts for less than 2% of the total power loss and significantly reduces the output current ripple of the hydrogen converter. By using half-wave conduction control, the voltage conversion ratio of the hydrogen converter can be increased by a factor of 4N compared to traditional full bridge converters. In future research, further modular design of the proposed hydrogen topology can be explored, aiming to build high-power multi-port hydrogen converters. Additionally, improvements can be made to the stacked filtering circuit structure and control strategies to suit modular design requirements better.

Key words： Hydrogen converter stacked filter structure isolated DC-DC low output current ripple high voltage conversion ratio

收稿日期: 2023-07-09

PACS:

TM46

基金资助:

国家重点研发计划项目（2020YFB1506800）和国家电网公司科技项目（52110421005H）资助

通讯作者: 刘海军男,1985年生,高级工程师,研究方向为柔性输配电及电能质量技术。E-mail: 369190173@qq.com

作者简介: 张理男,1999年生,硕士研究生,研究方向为大功率电力电子制氢变换器。E-mail: zl1846720683@163.com

引用本文:

刘海军, 张理, 张乔根, 韩民晓. 基于堆叠滤波结构的高电压比低纹波隔离型DC-DC制氢变换器[J]. 电工技术学报, 2024, 39(18): 5755-5767. Liu Haijun, Zhang Li, Zhang Qiaogen, Han Minxiao. High-Conversion-Ratio Low-Ripple Isolated DC-DC Hydrogen Converter Based on Stacked Filter Structure. Transactions of China Electrotechnical Society, 2024, 39(18): 5755-5767.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.231074 https://dgjsxb.ces-transaction.com/CN/Y2024/V39/I18/5755

[1] 舒印彪, 张智刚, 郭剑波, 等. 新能源消纳关键因素分析及解决措施研究[J]. 中国电机工程学报, 2017, 37(1): 1-9.
Shu Yinbiao, Zhang Zhigang, Guo Jianbo, et al.Study on key factors and solution of renewable energy accommodation[J]. Proceedings of the CSEE, 2017, 37(1): 1-9.
[2] 李争, 张蕊, 孙鹤旭, 等. 可再生能源多能互补制-储-运氢关键技术综述[J]. 电工技术学报, 2021, 36(3): 446-462.
Li Zheng, Zhang Rui, Sun Hexu, et al.Review on key technologies of hydrogen generation, storage and transportation based on multi-energy complementary renewable energy[J]. Transactions of China Elec- trotechnical Society, 2021, 36(3): 446-462.
[3] 张红, 袁铁江, 谭捷, 等. 面向统一能源系统的氢能规划框架[J]. 中国电机工程学报, 2022, 42(1): 83-94.
Zhang Hong, Yuan Tiejiang, Tan Jie, et al.Hydrogen energy system planning framework for unified energy system[J]. Proceedings of the CSEE, 2022, 42(1): 83-94.
[4] 孔令国, 陈钥含, 万燕鸣, 等. 计及调峰辅助服务的风电场/群经济制氢容量计算[J]. 电工技术学报, 2023, 38(16): 4406-4420.
Kong Lingguo, Chen Yaohan, Wan Yanming, et al.Calculation of economics of power-to-gas capacity for wind farms/clusters with peak regulation auxiliary service response[J]. Transactions of China Electro- technical Society, 2023, 38(16): 4406-4420.
[5] 孔令国, 王嘉祺, 韩子娇, 等. 基于权重调节模型预测控制的风-光-储-氢耦合系统在线功率调控[J]. 电工技术学报, 2023, 38(15): 4192-4207.
Kong Lingguo, Wang Jiaqi, Han Zijiao, et al.On-line power regulation of wind-photovoltaic-storage-hydrogen coupling system based on weight adjustment model predictive control[J]. Transactions of China Electro- technical Society, 2023, 38(15): 4192-4207.
[6] 朱玲, 李威, 王骞, 等. 基于校正条件生成对抗网络的风电场群绿氢储能系统容量配置[J]. 电工技术学报, 2024, 39(3): 714-730.
Zhu Ling, Li Wei, Wang Qian, et al.Wind farms- green hydrogen energy storage system capacity sizing method based on corrected-conditional generative adversarial network[J]. Transactions of China Elec- trotechnical Society, 2024, 39(3): 714-730.
[7] 吴孟雪, 房方. 计及风光不确定性的电-热-氢综合能源系统分布鲁棒优化[J].电工技术学报, 2023, 38(13): 3473-3485.
Wu Mengxue, Fang Fang.Distributionally robust optimization of electricity-heat-hydrogen integrated energy system with wind and solar uncertainties[J]. Transactions of China Electrotechnical Society, 2023, 38(13): 3473-3485.
[8] 马晓锋, 张舒涵, 何勇, 等. PEM电解水制氢技术的研究现状与应用展望[J]. 太阳能学报, 2022, 43(6): 420-427.
Ma Xiaofeng, Zhang Shuhan, He Yong, et al.Research status and application prospect of PEM electrolysis water technology for hydrogen pro- duction[J]. Acta Energiae Solaris Sinica, 2022, 43(6): 420-427.
[9] 樊立波, 罗少杰, 来益博, 等. 电解水制氢三电平直流电源的研制[J]. 电力电子技术, 2023, 57(3): 31-34.
Fan Libo, Luo Shaojie, Lai Yibo, et al.Development of three-level DC power supply for hydrogen production from electrolytic water[J]. Power Elec- tronics, 2023, 57(3): 31-34.
[10] Dobó Z, Palotás Á B.Impact of the current fluctuation on the efficiency of Alkaline water electrolysis[J]. International Journal of Hydrogen Energy, 2017, 42(9): 5649-5656.
[11] Buitendach H P C, Gouws R, Martinson C A, et al. Effect of a ripple current on the efficiency of a PEM electrolyser[J]. Results in Engineering, 2021, 10: 100216.
[12] Guilbert D, Collura S M, Scipioni A.DC/DC converter topologies for electrolyzers: state-of-the-art and remaining key issues[J]. International Journal of Hydrogen Energy, 2017, 42(38): 23966-23985.
[13] 郭小强, 魏玉鹏, 万燕鸣, 等. 新能源制氢电力电子变换器综述[J]. 电力系统自动化, 2021, 45(20): 185-199.
Guo Xiaoqiang, Wei Yupeng, Wan Yanming et al. Review on power electronic converters for producing hydrogen from renewable energy sources[J]. Auto- mation of Electric Power Systems, 2021, 45(20): 185-199.
[14] 杨文强, 邢小文, 王思晗. 大功率制氢变换器拓扑结构及其控制策略研究[J].电力电子技术, 2020, 54(12): 5-8.
Yang Wenqiang, Xing Xiaowen, Wang Sihan.Research on topological structure and control strategy of high power converter for hydrogen production[J]. Power Electronics, 2020, 54(12): 5-8.
[15] 张理, 韩民晓, 范溢文. 多相堆叠交错并联制氢变换器控制策略与特性分析[J]. 电工技术学报, 2023, 38(2): 485-495.
Zhang Li, Han Minxiao, Fan Yiwen.Control strategy and characteristic analysis of multi-phase stacked interleaved Buck converter for hydrogen production[J]. Transactions of China Electrotechnical Society, 2023, 38(2): 485-495.
[16] 苏冰, 王玉斌, 王璠, 等. 基于耦合电感的多相交错并联双向DC-DC变换器及其均流控制[J]. 电工技术学报, 2020, 35(20): 4336-4349.
Su Bing, Wang Yubin, Wang Fan, et al.Multi-phase interleaved bidirectional DC-DC converter with coupled inductors and current sharing control strategy[J]. Transactions of China Electrotechnical Society, 2020, 35(20): 4336-4349.
[17] 丁杰, 高双, 赵世伟, 等. 基于耦合电感的对称式交错并联低输入电流纹波高增益DC-DC变换器[J]. 电工技术学报, 2021, 36(7): 1507-1515.
Ding Jie, Gao Shuang, Zhao Shiwei, et al.Symmetrical interleaved low input current ripple high step-up DC-DC converter based on coupled indu- ctor[J]. Transactions of China Electrotechnical Society, 2021, 36(7): 1507-1515.
[18] 林通, 江平, 姚佳. 一种基于耦合电感的零电流纹波功率因数校正变换器[J]. 电工技术学报, 2022, 37(18): 4732-4744.
Lin Tong, Jiang Ping, Yao Jia.A zero current ripple tapped inductor power factor correction converter[J]. Transactions of China Electrotechnical Society, 2022, 37(18): 4732-4744.
[19] 马小勇, 王萍, 王议锋, 等. 基于交错并联Boost变换器的耦合电感综合建模与多目标优化方法[J]. 电工技术学报, 2022, 37(24): 6399-6410.
Ma Xiaoyong, Wang Ping, Wang Yifeng, et al.Comprehensive modeling and multi-objective opti- mization method for coupled inductors of interleaved Boost converters[J]. Transactions of China Electro- technical Society, 2022, 37(24): 6399-6410.
[20] Pan C T, Chuang Chenfeng, Chu C C.A novel transformerless interleaved high step-down con- version ratio DC-DC converter with low switch voltage stress[J]. IEEE Transactions on Industrial Electronics, 2014, 61(10): 5290-5299.
[21] 周京华, 孟祥飞, 陈亚爱, 等. 基于新能源发电的电解水制氢直流电源研究[J]. 太阳能学报, 2022, 43(6): 389-397.
Zhou Jinghua, Meng Xiangfei, Chen Yaai, et al.Research on DC power supply for hydrogen production from electrolytic water based on new energy generation[J]. Acta Energiae Solaris Sinica, 2022, 43(6): 389-397.
[22] 刘闯, 刘艳鹏, 刘海洋, 等. 高频隔离型电动汽车快速直流充电器研究[J]. 电工技术学报, 2016, 31(3): 40-49.
Liu Chuang, Liu Yanpeng, Liu Haiyang, et al.Quick DC charger for high-frequency isolation electric vehicles[J]. Transactions of China Electrotechnical Society, 2016, 31(3): 40-49.
[23] 孙志峰, 肖岚, 王勤. 输出并联型双有源全桥变换器控制技术研究综述[J]. 中国电机工程学报, 2021, 41(5): 1811-1831.
Sun Zhifeng, Xiao Lan, Wang Qin.Review research on control technology of output parallel dual- active-bridge-converters[J]. Proceedings of the CSEE, 2021, 41(5): 1811-1831.
[24] 丁杰, 尹华杰, 赵世伟. 反激式隔离型高增益DC/DC变换器[J]. 电源学报, 2022, 20(2): 26-33.
Ding Jie, Yin Huajie, Zhao Shiwei.Flyback isolated high step-up DC/DC converter[J]. Journal of Power Supply, 2022, 20(2): 26-33.
[25] 苏诗慧, 雷勇, 罗茜, 等. 一种用于可持续能源的隔离型高增益DC-DC变换器[J]. 电气传动, 2021, 51(18): 23-27.
Su Shihui, Lei Yong, Luo Xi, et al.An isolated high-gain DC-DC converter for sustainable energy[J]. Electric Drive, 2021, 51(18): 23-27.
[26] 谢泽亚. 高变换比DC-DC变换器效率提升技术研究[D]. 成都: 电子科技大学, 2023.