Event triggering power sharing control for AC/DC microgrids based on P -F droop curve method |
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| Authors: | Dazhong Ma Qiuye Sun Xiangpeng Xie Xiaoyu Li |
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| Institution: | 1. College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning, China;2. The Institute of Advanced Technology, Nanjing University of Posts and Telecommunications, Nanjing, Jiangshu, China;3. Key Lab.of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, Liaoning, China |
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| Abstract: | The power sharing of AC/DC micro-grids is researched in this paper. The proposed strategy mainly include two parts: the primary power event triggering control with secondary control and an adaptive quasi sliding mode voltage control in inner-loop. Firstly, a event triggering power sharing control (ETPSC) based on droop curve is developed to regulate the voltage and frequency of AC and voltage of DC with the aim of the proportional power sharing between AC and DC micro-grids. The triggered threshold of ETPSC can be chosen to decide the transmitted power between AC and DC micro-grids. When the difference power between AC and DC micro-grids is less than the triggered threshold of power flow, there is no power sharing between AC and DC micro-grids, which can less the number of switching the power flow direction and the transmitted line power loss. The ETPSC has a great robust for the disturbances of load and improve the stability of the system. An adaptive quasi-sliding-mode control,which is implemented easily and flexibly with small computational burden and only based on input/output (I/O) measurement data but not the model any more, is used to control voltage in inner-loop. The effectiveness of the proposed control schemes is demonstrated by some numerical simulations and experimental results. |
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| Keywords: | Corresponding author |
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