Research on Power Management Strategy of DC Microgrid with Photovoltaic, Energy Storage and EV-Wireless Power Transfer in V2G Mode
Zhou Wei1,2, Lan Jiahao2, Mai Ruikun1,2, He Zhengyou1,2
1. Key Laboratory of Suspension Technology and Maglev Vehicle Ministry of Education Southwest Jiaotong University Chengdu 611756 China; 2. School of Electrical Engineering Southwest Jiaotong University Chengdu 611756 China
Abstract With the rapid increase of electric vehicles (EVs), it is essential to build a low-carbon, flexible and stable charging method for EVs. This paper integrated DC microgrid, wireless power transfer (WPT), vehicle-to-grid (V2G) technologies, and focused on the power management strategy of DC microgrid with photovoltaic, energy storage and WPT system in V2G mode. The mathematical models for photovoltaic, WPT, and energy storage were established, respectively. Considering the photovoltaic power output and the load power level, the critical conditions for the WPT system under maximum power efficiency status were derived, and the output function of the energy storage beyond the critical conditions was given. Based on this, the three operating modes and boundary conditions of the DC microgrid were defined, the upper-level controller was designed to switch between the three modes. An experimental system was constructed to verify that the proposed hierarchical control algorithm can effectively maintain the stability of the bus voltage. The maximum power of the photovoltaic system and the optimal efficiency operation of the WPT system were also guaranteed.
Zhou Wei,Lan Jiahao,Mai Ruikun等. Research on Power Management Strategy of DC Microgrid with Photovoltaic, Energy Storage and EV-Wireless Power Transfer in V2G Mode[J]. Transactions of China Electrotechnical Society, 2022, 37(1): 82-91.
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2022, Vol. 37 
