Simulation of Dynamic Torsional Vibration during Grid Low Voltage in a PMSG Wind Power Generation System

PMSG 풍력발전시스템에서 전원 저전압 발생시 비틀림 진동 동특성 시뮬레이션

A wind generator system model includes wind model, rotor dynamics, synchronous generator, power converter, distribution line and infinite bus. This paper investigates the low-Voltage Ride-Through capability of PMSG wind turbine in a variable speed. The drive train of a wind turbine on 2-mass modeling can observe the shaft torsional vibration when the low-voltage occur. To reduce the torsional vibration when the low-voltage occur, this paper designs suppression control algorithm of the torsional vibration and implements simulation. A Matlab/Simulink is used to investigate the response during the transient state.