Research on Control System of 5-DOF Magnetic Suspension Flywheel Battery

With the continuous reduction of fossil fuels, pure gasoline vehicles and diesel vehicles will inevitably withdraw from the stage of history. In contrast, new energy vehicles have huge room for development. However, the battery life and charging time of new energy vehicles are two important factors restricting their development. Therefore, more efficient energy storage methods need to be studied. Compared with traditional batteries, the new flywheel battery has attracted more scholars' attention due to its advantages of high charge and discharge efficiency, large stored energy, and long life cycle. In order to improve the performance of the flywheel battery and reduce the loss, a five-degree-of-freedom magnetic levitation flywheel battery is proposed in the paper to replace the traditional bearing-supported flywheel battery. Usually, the research on flywheel battery only focuses on a single aspect, and there are few literature to analyze the entire flywheel battery control system. Hence, the structure and principle of the five-degree-of-freedom flywheel battery are first introduced in the paper to design the control system for the five-degree-of-freedom flywheel battery and build a simulation model with the help of the Matlab/Simulink software. Finally, an experimental platform for the five-degree-of-freedom flywheel battery is established to conduct the experimental study to verify the reliability of the control system. The experimental results show that the five-degree-of-freedom flywheel battery control system proposed in the paper has good performance and stability.