A Dynamic Voltage Restorer for the Voltage Regulation of a Grid-tied Squirrel-cage Induction Generator
Date Issued
2011
Date
2011
Author(s)
Huang, Wei-Kang
Abstract
The development and use of green energies receive much attention because of energy crisis and climate changes. Wind energy generation plays an important role in green energy developments since it has many advantages such as low cost, no pollutions, inexhaustible supply of wind energy. Among the various types of wind power generator, squirrel-cage induction generators have been widely employed due to low costs and easy to control. However, the squirrel-cage induction generators are not capable of providing voltage regulation when the system is subjected to load changes or faults due to the lack of rotor excitation. Moreover, the ever-changing wind speed causes fluctuating power flows in the system and has negative impacts on power quality. In this thesis, a dynamic voltage restorer (DVR) controlled by a fuzzy logic controller is designed for voltage regulation of a squirrel-cage induction generator. It is concluded from experimental results that the system voltage can be effectively regulated by the proposed DVR.
Subjects
Dynamic voltage restorer
Wind power generation
Squirrel-cage induction generator
inverter
Fuzzy logic control
SDGs
Type
thesis
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