Minimum Suspension Loss Control Strategy of Vehicle-Mounted Flywheel Energy Storage Using Single-Winding Bearingless Synchronous Reluctance Motor

In order to improve the energy storage efficiency of vehicle-mounted flywheel and reduce the standby loss of flywheel, this paper proposes a minimum suspension loss control strategy for single-winding bearingless synchronous reluctance motor in the flywheel standby state, aiming at the large loss of traditional suspension control strategy. Based on the premise that the dynamic performance of rotor suspension is not affected, the minimum energy consumption of motor system is the current distribution optimization objective. The mathematical model of minimum energy consumption is derived and applied to the control system to realize the active allocation of optimal bias current and suspension current according to the requirements of suspension control. The simulation and experimental results show that the proposed control strategy can not only reduce the energy consumption and heat dissipation pressure of the system, but also improve the efficiency of the flywheel system, which has good engineering application value.