Support Resources Literature References A Grid-Connected WECS with Power Limiting Control

A Grid-Connected WECS with Power Limiting Control

Author: Jéssica Santos Guimarães, Demercil de S. Oliveira Jr., Juliano de Oliveira Pacheco, Paulo P. Peixoto (Federal University of Ceará, Department of Electrical Engineering, Group of Energy Processing and Control)

Source: IEEE Applied Power Electronics Conf., March 20-24 2016 Long Beach, CA, pp.3346-3352.

This paper presents a grid-connected Wind Energy Conversion System (WECS) using a permanent magnet synchronous generator (PMSG) operating with variable speed. A maximum power point tracking (MPPT) algorithm is used to determinate the power to be extracted from the generator for each rotational speed while wind power remains lower than the PSMG rated power. Otherwise, the MPPT algorithm is disabled and the proposed external mechanical power control loop maintains the rated power condition. Both control techniques determine the proper current ratings through the PMSG, which is driven by a three-phase bridgeless boost rectifier using digitally-implemented self-control strategy. The rectifier supplies a three-phase full-bridge inverter that provides an ac output with the desired requirements. Simulations results on a 6-kW WECS are shown in order to validate the proposal.