Control strategy of bidirectional convertor in DC/AC hybrid microgrid
The AC/DC hybrid power supply system can not only provide power for DC loads,but also can supply AC power equipment,and can also reduce power electronic components to improve power quality.Therefore,it is suitable for using in new energy buildings.The bidirectional DC/AC converter is an important device for realizing the power exchange between the DC sub-microgrid and the AC sub-microgrid in an AC/DC hybrid microgrid,and it is also a key device for maintaining the stable operation of the hybrid microgrid.The relationship between power and voltage in the microgrid is in line with PU droop characteristics.This paper proposes an improved droop control strategy that determines the power shortage(excess)value based on the relationship between the DC side capacitance and the voltage across AC and DC and delivers the corresponding power accordingly.To ensure the power balance in the microgrid system and maintain the stability of the system.
AC-DC Hybrid Microgrid Bidirectional DC/AC Converter Improved droop control Power balance
Cheng XU Jie ZHANG Yunhao JIANG Rui PEANG
Hubei Collaborative Innovation Center for High-efficiency Utilisation of Solar Energy,Hubei University of Technology
国际会议
武汉
英文
500-508
2018-08-21（万方平台首次上网日期，不代表论文的发表时间）