Abstract：Multiport wireless DC-DC converter (MWiDC) has the potential to realize efficient multiport power conversion with high-level flexibility and expansibility. However, its system modeling and power flow management need more general theory. Therefore, this paper proposes a modular MWiDC. Firstly, a model of an arbitrary MWiDC is established, and a power-voltage hybrid decoupling control (PVHDC) strategy is designed. The closed-loop DC gain, high-frequency characteristic, and stability under the PVHDC strategy are demonstrated. This paper also analyzes the direct control strategy (DCS) without decoupling for comparison. However, the closed-loop stability of the DCS still needs to be proved due to the system’s complexity. Finally, the experiment and simulations are carried out on a three-port prototype. The experimental results show that the prototype can realize zero voltage switching with an efficiency of 91%. The simulation indicates that both PVHDC and DCS can realize voltage-power hybrid control, but PVHDC has a stronger anti-disturbance.
宋钊, 刘明. 模块化多端口无线电能DC-DC变换器建模及其多向功率流解耦控制策略[J]. 电工技术学报, 2022, 37(24): 6262-6271.
Song Zhao, Liu Ming. Modular Multiport Wireless DC-DC Converter with Multidirectional Power Flow and Its Decoupling Control Strategy. Transactions of China Electrotechnical Society, 2022, 37(24): 6262-6271.
[1] 张辉, 梁誉馨, 孙凯, 等. 直流微电网中多端口隔离型DC-DC变换器的改进虚拟电容控制策略[J]. 电工技术学报, 2021, 36(2): 292-304. Zhang Hui, Liang Yuxin, Sun Kai, et al.Improved virtual capacitor control strategy of multi-port isolated DC-DC converter in DC microgrid[J]. Transactions of China Electrotechnical Society, 2021, 36(2): 292-304. [2] 刘计龙, 朱志超, 肖飞, 等. 一种面向舰船综合电力系统的模块化三端口直流变换器[J]. 电工技术学报, 2020, 35(19): 4085-4096. Liu Jilong, Zhu Zhichao, Xiao Fei, et al.A modular three-port DC-DC converter for vessel integrated power system[J]. Transactions of China Electro- technical Society, 2020, 35(19): 4085-4096. [3] Alshareef M, Lin Zhengyu, Li Fulong, et al.A grid interface current control strategy for DC micro- grids[J]. CES Transactions on Electrical Machines and Systems, 2021, 5(3): 249-256. [4] 孙孝峰, 刘飞龙, 熊亮亮, 等. 双Buck/Boost集成双有源桥三端口DC-DC变换器[J]. 电工技术学报, 2016, 31(22): 73-82. Sun Xiaofeng, Liu Feilong, Xiong Liangliang, et al.Dual Buck/Boost integrated dual active bridge three- port DC-DC converter[J]. Transactions of China Electrotechnical Society, 2016, 31(22): 73-82. [5] 刘贝, 帅智康, 肖凡, 等. 三有源桥变换器简化分析模型及优化控制策略[J]. 电工技术学报, 2021, 36(11): 2394-2407. Liu Bei, Shuai Zhikang, Xiao Fan, et al.Simplified analysis model and optimal control strategy of triple active bridge converter[J]. Transactions of China Electrotechnical Society, 2021, 36(11): 2394-2407. [6] El Shafei A, Ozdemir S, Altin N, et al.Development of a medium voltage, high power, high frequency four-port solid state transformer[J]. CES Transactions on Electrical Machines and Systems, 2022, 6(1): 95-104. [7] 宫金武, 查晓明, 王盼, 等. 大容量多端口变换器拓扑研究综述[J]. 电源学报, 2017, 15(5): 1-9. Gong Jinwu, Zha Xiaoming, Wang Pan, et al.Review of topology research on high-power multi ports converter[J]. Journal of Power Supply, 2017, 15(5): 1-9. [8] Zhang Xin, Liu Fuxin, Lei Kelin, et al.Three-port magnetically coupling resonant wireless energy router and its zero-power-flow control scheme[C]//IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, Singapore, 2020: 3936-3941. [9] Liu Xiaobo, Rong Cancan, Tao Xiong, et al.Multi- DoF wireless power transfer systems based on magnetic dipole coils with multiple receivers[J]. Journal of Power Electronics, 2022, 22(3): 534-546. [10] Shi Liming, Yin Zhenggang, Jiang Longbin, et al.Advances in inductively coupled power transfer technology for rail transit[J]. CES Transactions on Electrical Machines and Systems, 2017, 1(4): 383-396. [11] Liu Ming, Wang Ping, Guan Yueshi, et al.A 13.56MHz multiport-wireless-coupled (MWC) battery balancer with high frequency online electrochemical impedance spectroscopy[C]//2019 IEEE Energy Con- version Congress and Exposition (ECCE), Baltimore, USA, 2019: 537-544. [12] Liu Ming, Chen Yenan, Elasser Y, et al.Dual frequency hierarchical modular multilayer battery balancer architecture[J]. IEEE Transactions on Power Electronics, 2021, 36(3): 3099-3110. [13] Wang Ping, Chen Yenan, Kushima P, et al.A 99.7% efficient 300W hard disk drive storage server with multiport AC-coupled differential power processing (MAC-DPP) architecture[C]//2019 IEEE Energy Con- version Congress and Exposition (ECCE), Baltimore, USA, 2019: 5124-5131. [14] Chen Yenan, Wang Ping, Elasser Y, et al.Multicell reconfigurable multi-input multi-output energy router architecture[J]. IEEE Transactions on Power Elec- tronics, 2020, 35(12): 13210-13224. [15] Zhao Chuanhong, Kolar J W.A novel three-phase three-port UPS employing a single high-frequency isolation trans-former[C]//(IEEE Cat. No. 04CH37551), Aachen, Germany, 2004, 6: 4135-4141. [16] Falcones S, Ayyanar R, Mao Xiaolin.A DC-DC multiport-converter-based solid-state transformer integrating distributed generation and storage[J]. IEEE Transactions on Power Electronics, 2013, 28(5): 2192-2203. [17] Repecho V, Olm J M, Griñó R, et al.Modelling and nonlinear control of a magnetically coupled multi- port DC-DC converter for automotive applications[J]. IEEE Access, 2021,9: 63345-63355. [18] Wang Ping, Chen Minjie.Towards power FPGA: architecture, modeling and control of multiport power converters[C]//2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), Padova, Italy, 2018: 1-8.
2022, Vol. 37 
