Control method of flywheel energy storage array for grid-connected wind-storage microgrid

doi:10.12028/j.issn.2095-4239.2018.0013

Abstract

Abstract: Due to the fluctuation and intermittent nature of renewable energy, they massive access will bring new difficulties to the power grid operation. Improving the scheduling of renewable energy by using energy storage technology is the focus of current research. In order to mitigate the bad effect of renewable energy generation on power grid, a layered optimal control method based on flywheel energy storage array is proposed for grid-connected wind-storage microgrid. The upper optimization center establishes the corresponding charge/discharge optimization model according to the power shortfall and the speed of each flywheel, and solves the power reference value of the corresponding flywheel. The lower flywheel controller adopts dual-mode double loop control method to realize the control of flywheel speed and output power. Finally, the effectiveness and feasibility of the proposed control method are validated by MATLAB/Simulink simulation.

Key words: BLDC, flywheel energy storage array, wind power, AC microgrid, power shortage

CLC Number:

TM614
TM313

GUO Wei, ZHANG Jiancheng, LI Chong, SU Hao. Control method of flywheel energy storage array for grid-connected wind-storage microgrid[J]. Energy Storage Science and Technology, 2018, 7(5): 810-814.

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