Analysis of the Notch Filter Insertion Position for Natural Frequency Vibration Suppression in a Magnetic Suspended Flywheel Energy Storage System

The composite material flywheel rotor of a energy storage system (FESS) has low natural frequency. When the suffers from noise interference, magnetic bearing generates force with same frequency as and causes vibration to occur. Thus, it is necessary suppress suspended (MS) FESS. LMS adaptive notch filter generally adopted for suppression. suppression performance different when insertion position different. This paper analyzes influence in positions control system. Through transfer function force, theoretical analysis performed. Corresponding experiments are performed 500 kW MS FESS prototype. verified experimentally.