A more accurate dynamic wind energy conversion system emulator

Abstract

This paper explains how an advanced emulator is constructed to simulate the static and dynamic characteristics of a wind energy conversion system. This system consists of a 3 kW dc motor, which emulates the mechanical drive train and drives a synchronous generator. A developed MATLAB/Simulink model obtains wind profiles and calculates the command shaft torque of a real wind turbine by applying real wind turbine characteristics in dynamics. These characteristics are compensated for more accurate results. Based on the comparison between the calculated torque and command one, the shaft torque of the dc motor is regulated by controlling the armature current demand of a single-phase half-controlled ac-dc converter. The effectiveness of the developed system is increased by proposing some novel ideas. This paper reports the operating principles, theoretical analyses, and test results under several cases of study.