Design of Dynamic Voltage Regulator for a Grid-connected Induction Generator
Date Issued
2007
Date
2007
Author(s)
Huang, Jen-Wei
DOI
zh-TW
Abstract
As the issue of environmental protection receives increasing attention, renewable energy source, such as wind turbine-induction generator system, is getting more and more important. Three phase induction generators provide the desired electric power in a wind energy conversion system. Induction machines are not commonly employed as generators except in the case of wind farms due to their unsatisfactory voltage regulation.
The purpose of this thesis is to analyze and design the Dynamic Voltage Regulator(DVR) for a wind energy conversion system with an induction generator. This compensator employs a direct current capacitor to offer the voltage source and uses the pulse-width modulation technology to adjust the output voltage of the three-phase voltage-sourced inverter. Dynamic responses for a grid-connected induction generator subject to three-phase faults and step load change are investigated in order to demonstrate the effectiveness of the proposed DVR in regulating system voltage.
The effectiveness of the designed DVR is first investigated by digital simulations using the Matlab_Simulink software. Then, in the experiment, the control kernel of digital system for DVR is based on a personal computer with Adventec PCL-1800 data acquisition cards. The three-phase pulse width modulation signals are generated by computer software in order to reach the objective of voltage compensation.
Finally, it is concluded from results of simulations and experiments that load bus voltage can be effectively regulated by the designed DVR.
Subjects
感應發電機
動態電壓調整器
互聯系統
感應機
Induction Generator
Dynamic Voltage Regulator
Induction machine
SDGs
Type
thesis
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