Real-time implementation of the fuzzy logic controlled parallel protection technique to enhance the DFIG system's fault ride through capability

Document Type : Research Note

Authors

Maulana Azad National Institute of Technology, Bhopal, India.

10.24200/sci.2023.61209.7200

Abstract

Fault Ride Through (FRT) capability is one of the critical needs mandated as per new grid regulations to accept large wind energy penetration into grid. In this paper, a hybrid approach has been proposed to improve the FRT of the grid-connected Doubly Fed Induction Generator fed Wind Energy Conversion (DFIG-WEC) system using fuzzy approach. The proposed method has been designed by integrating the Rotor-side Series Dynamic Braking Resistor (RSDBR), the DC-link Braking Chopper (DCBC) and the Rotor End Parallel Resistance Crowbar (REPRC) topologies for limiting the peak values of the fault rotor current, stator current, and DC-link voltage, to protect the rotor-side converter, also reduce torque fluctu-ations, avoid frequent use of crowbar short-circuit, improve rotor-side converter operation time and the FRT capability. This research article also presents various fault overcurrent scenarios (symmetrical and asymmetrical) and provides protection analysis, including switching methods, coordination with different topologies, and resistance value calculations. The effectiveness of the proposed technique is verified us-ing a MATLAB simulation mode for a DFIG system driven by a typical 1.5 MW wind turbine. The Real-Time Simulator (RTS)-based OPAL-RT4500 effectively verifies the operation of the scheme under vari-ous fault conditions.

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Volume 32, Issue 10
Transactions on Computer Science & Engineering and Electrical Engineering
May and June 2026 Article ID:7200
  • Receive Date: 09 October 2022
  • Revise Date: 10 March 2023
  • Accept Date: 30 May 2023