Properties Dynamic Simulation of the Flywheel Energy Storage System Model with Speed-Current Double Closed Loop

Abstract

The random fluctuation of output power of modern distributed power generation system brings many hidden dangers to the safe operation of power grid, and the application of energy storage system is the most effective way to smooth the output power of distributed power generation. Based on the analysis of the structure and charge-discharge dynamic performance of the flywheel energy storage system, the permanent magnet brushless DC motor (PMBLDCM) is proposed as the flywheel motor, and the charging and discharging mathematical model of the flywheel energy storage system based on PMBLDCM is established. Using MATLAB/Simulink, the simulation model of flywheel energy storage system with speed-current double closed Loop is established. The simulation results show that the system can effectively control the flywheel energy storage system to achieve two-way energy conversion, and effectively stabilize power fluctuations.