Design and development of controller for PMSG based Wind Energy Conversion system

Abstract

This paper use a suitable power converter topology and design a suitable controller for a Wind Energy Conversion system with Permanent Magnet Synchronous Generator (PMSG) for stand alone and grid integrated operations. The present work presents the system in which a PMSG feeds an isolated load through a closed loop boost converter. The output voltage and frequency of the PMSG is variable in nature due to non uniform wind velocities and is not synchronized with the grid frequency. In order to condition and feed it to grid we need power electronic interface. The variable ac output is rectified by a diode rectifier and maintained constant by a boost converter. The boost converter is provided with a closed loop feedback control, which is designed using PI controller. In this controller the output voltage is continuously sensed and duty ratio of the switch is varied to maintain the DC link voltage constant. The converter output is fed to three phase inverter which employs a sine PWM technique, the output of which is fed to the load. The power converters and together with independent control systems can effectively improve the output voltage and frequency of the wind PMSG feeding an isolated load. The whole system is simulated using MATLAB/ Simulink and the results are presented to demonstrate the veracity of the developed control scheme. Keywords-Permanent Magnet synchronous Generator (PMSG); Closed loop boost converter; Three phase inverter; Three phase diode bridge rectifierI.

Maximum Power Coefficient Control of a Micro Grid-Connected Wind Energy System

“…A simulation study of a variable speed PMSG based on wind turbine connected to the grid through two-leg switch BTB converter was presented it [9]. In Reference [10], a close loop control was also used to control the duty cycle of the boost converter for stand-alone system and connected to the network. Maximum power point tracking (MPPT) control for small scale PMSG wind turbine is designed by fuzzy logic control method (FLC) at different wind speed conditions in [11], power quality problems for variable speed wind turbines have been addressed in [12].…”

Rüzgâr Enerjisi Dönüşüm Sistemlerinde Maksimum Güç Noktası İzleme Kontrolünün Farklı Yöntemler Üzerinden Karşılaştırmalı Analizi

“…Literatürde kıyıcılı arayüz yapısını kullanan REDS'lerde farklı şekillerde MGNİ kontrolünü gerçekleştiren çalışmalar mevcuttur. Kontrol uygulamalarında sıklıkla kullanılan PID tabanlı MGNİ uygulamalarında [5][6] farklı sistem parametrelerinin referans değerlerine göre hata değeri üzerinden çalışma sağlanmıştır. Özellikle lineer özelikteki sistemler için iyi performans veren bu kontrol yapıları REDS gibi hızlı rüzgâr değişimlerine maruz kalan sistemlerde düşük performans gösterebilir.…”

Low‐frequency oscillation analysis of AC/DC system with offshore wind farm integration via MMC‐based HVDC

“…Many researches have been conducted with the control of wind turbines in power system dynamics. A suitable power converter topology and controller for a wind energy conversion system (WECS) with PMSG to serve an isolated load is proposed in [7]. Guo et al .…”