摘要
文章重点介绍风光互补直流微电网为电动汽车可靠无线充电示范工程的建设情况。首先利用电量平衡和功率平衡法对该示范工程进行容量配置,拓扑结构设计和电压等级分析。同时对二次系统和监控系统的用电进行了规划分析,设计了为保证供电可靠性的不间断供电系统(UPS)。其次对由光伏、风电和蓄电池组成独立风光互补微电网中各类变频装置的控制策略进行了研究,从系统稳定性和供电可靠性出发,采用主从控制,蓄电池侧双向DC/DC稳定直流母线电压,光伏和风电均采用最大功率跟踪(MPPT)控制。然后进行无线充电装置及电磁屏蔽装置的设计,并对电动汽车的充电装置进行了改造。再次,设计了风光互补微电网为电动汽车无线充电监控系统,能实现实时监控和远程监控。最后进行了施工的布局设计和施工建设,实现了绿色能源为电动汽车灵活快速充电。
This paper introduces a demonstration of an islanded DC microgrid for electrical vehicles （EVs） wireless charging. The DC microgrid includes photovoltaic panels （PV）, small wind turbine （WT）, battery units （BUs） and a wireless charger. The planning, control strategy, protection, supervisory control and data acquisition （SCADA）, black start, energy management system （EMS） and laboratory system and the demonstration of the microgird are presented. Firstly, the system capacity, configuration and topology are designed and the voltage level is analyzed by using the energy balance and power balance method. Meanwhile, the electricity of the secondary system is planned and an uninterruptible power supply （UPS） is designed to supply them reliably. Secondly, the control methods of the DC microgrid composed of PV, WT, BU, UPS and wireless charger is investigated. The master-slave control strategy is used. The battery bidirectional DC/DC converter is responsible to stabilize DC bus voltage. The challenge is the fast response of the wireless charger as a power electronic loads in an islanded microgrid. Both PV and WT are controlled using maximum power point tracking （MPPT） . Then wireless charger and electromagnetic shielding device is designed and the EV charging device is reformed. The protection, SCADA, black start and EMS of the WT/PV/BU DC microgrid with EVs wireless charger is designed and it can achieve real-time and remote monitoring. Lastly, the laboratory system and the demonstration results are shown. The system realizes the EVs wireless and fast charging with the renewable energy.
出处
《供用电》
2018年第1期8-13,7,共7页
Distribution & Utilization
基金
国家自然科学基金(51577124)
天津市科技支撑计划(15ZCZDGX00980)
天津市自然科学基金重点基金(17JCZDJC31300)~~
