A SMES-Based Dynamic Current Limiter to Improve the LVRT Capability of DFIG-Based WECS
Jie Ren, Xianyong Xiao, Zixuan Zheng, Zhicheng Ma
Abstract
To improve the low voltage ride through (LVRT) capability of the doubly fed induction generator (DFIG), a series-connected current source converter (CSC) based superconducting magnetic energy storage (SMES) device is proposed. Based on the controllable current source characteristic of the SMES and the electromagnetic principle of the transformer, the device will behave as a dynamic impedance to suppress the overcurrent during the voltage sag period. Simulation results based on MATLAB further verify its good current limiting performance.
Topics & Concepts
OvercurrentSuperconducting magnetic energy storageVoltage sagCurrent limitingLow voltage ride throughMATLABFault current limiterElectrical impedanceVoltageTransformerComputer scienceLimiterElectrical engineeringEnergy storageLow voltageMaterials scienceElectromagnetic coilSuperconducting magnetElectric power systemEngineeringPower qualityTelecommunicationsPhysicsPower (physics)Operating systemQuantum mechanicsWind Turbine Control SystemsFrequency Control in Power SystemsHVDC Systems and Fault Protection