Simplex optimization procedure for tuning damping controller parameters for Type III DFIG wind generators

Abstract

This paper develops a method for finding optimum control parameters for Type III DFIG wind generators using electro-magnetic transient simulations. The optimization is performed on the eight time constant variables within a supplemental damping controller being used for protection against SSCI events in a Type III DFIG based windfarm. For validation and verification of the research results, a wind farm consisting of 150–3 MW Type III Doubly Fed Induction Generators (DFIG) connected to a stiff voltage source through a 240 km transmission line was modeled in PSCAD/EMTDC. After completion of the initial design of the supplementary damping controller, the results are further refined using a non-linear time domain simplex optimization (multi-run) process within the electromagnetic transient simulations.