Z-source Inverter Based Grid-interface For Variable-speed Permanent Magnet Wind Turbine Generators

TL;DR

This paper proposes a Z-source inverter-based grid interface for variable-speed wind turbines with permanent magnet generators, optimizing energy harvesting under variable wind conditions through a specialized control system.

Contribution

It introduces a novel control system for a Z-source inverter that enhances energy extraction and stability in wind turbine applications with permanent magnet generators.

Findings

Laboratory experiments verify the effectiveness of the proposed control system.

The approach improves energy harvesting efficiency under variable wind conditions.

The system maintains stable operation of the wind turbine generator.

Abstract

A Z-source inverter based grid-interface for a variable-speed wind turbine connected to a permanent magnet synchronous generator is proposed. A control system is designed to harvest maximum wind energy under varied wind conditions with the use of a permanent magnet synchronous generator, a diode-rectifier and a Z-source inverter. Control systems for speed regulation of the generator and for DC- and AC- sides of the Z-source inverter are implemented. Laboratory experiments are used to verify the efficacy of the proposed approach.