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Distributed Generation : Induction and Permanent Magnet Generators - Loi Lei Lai

Distributed Generation

Induction and Permanent Magnet Generators

Hardcover

Published: 1st January 2008
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Distributed power generation is a technology that could help to enable efficient, renewable energy production both in the developed and developing world. It includes all use of small electric power generators, whether located on the utility system, at the site of a utility customer, or at an isolated site not connected to the power grid. Induction generator (IG) is the most commonly used and cheapest technology, compatible with renewable energy resources. Permanent magnet (PM) generators have traditionally been avoided due to high fabrication costs; however, compared with IGs they are more reliable and productive. <p> <i>Distributed Generation</i> thoroughly examines the principles, possibilities and limitations of creating energy with both IGs and PM generators. It takes an electrical engineering approach in the analysis and testing of these generators, and includes diagrams and extensive case study examples to better demonstrate how the integration of energy sources can be accomplished. The book also provides the practical tools needed to model and implement new techniques for generating energy through isolated or grid-connected systems. <p> Besides a chapter introducing the technical, economic and environmental impacts of distributed generation, this book includes:&#160; <ul type="disc"> <li>an examination of various phase-balancing schemes for a three-phase IG operating on a single-phase power system; <li>a coupled circuit 2-D finite element analysis of a grid-connected IG, with Steinmetz connection; <li>a study of self-excited induction generator (SEIG) schemes for autonomous power systems, and the voltage and frequency control of SEIG with a slip-ring machine (SESRIG); <li>a report on a PM synchronous generator with inset rotor for achieving a reduced voltage regulation when supplying an autonomous power system, and an analysis of its performance using a two-axis model and finite element method; <li>experimental work on various IG and SEIG schemes. </ul> <p> This book is a must-read for engineers, consultants, regulators, and environmentalists involved in energy production and delivery, helping them to evaluate renewable energy sources and to integrate these into an efficient energy delivery system. It is also a superior reference for undergraduates and postgraduates. Designers, operators, and planners will appreciate its unique contribution to the literature in this field.

Foreword
Preface
Acknowledgements
About the Authors
Distributed Generation
Introduction
Reasons for DG
Technical Impacts of DG
DG Technologies
Thermal Issues
Voltage Profile Issues
Fault-Level Contributions
Harmonics and Interactions with Loads
Interactions Between Generating Units
Protection Issues
Economic Impact of DG
Barriers to DG Development
Renewable Sources of Energy
Renewable Energy Economics
Interconnection
Interconnection Standardization
Rate Design
Recommendations and Guidelines for DG Planning
Summary
References
Generators
Introduction
Synchronous Generator
Permanent Magnet Materials
Permanent Magnet Generator
Induction Generator
Three-Phase IGs and SEIGs
Single-Phase IGs and SEIGs
Doubly Fed Induction Generator
Operation
Recent Work
Summary
References
Three-Phase IG Operating on a Single-Phase Power System
Introduction
Phase Balancing Using Passive Circuit Elements
Analysis of IG with Phase Converters
Phase-Balancing Schemes
Case Study
System Power Factor
Power and Efficiency
Operation with Fixed Phase Converters
Summary
Phase Balancing using the Smith Connection
Three-Phase IG with the Smith Connection
Performance Analysis
Balanced Operation
Case Study
Effect of Phase-Balancing Capacitances
Dual-Mode Operation
Summary
Microcontroller-Based Multi-Mode Control of SMIG
Phase Voltage Consideration
Control System
Practical Implementation
Experimental Results
Summary
Phase-Balancing using a Line Current Injection Method
Circuit Connection and Operating Principle
Performance Analysis
Balanced Operation
Case Study
Summary
References
Finite Element Analysis of Grid-Connected IG with the Steinmetz Connection
Introduction
Steinmetz Connection and Symmetrical Components Analysis
Machine Model
Finite Element Analysis
Basic Field Equations
Stator Circuit Equations
Stator EMFs
Rotor Circuit Model
Comments on the Proposed Method
Computational Aspects
Case Study
Summary
References
SEIGs for Autonomous Power Systems
Introduction
Three-Phase SEIG with the Steinmetz Connection
Circuit Connection and Analysis
Solution Technique
Capacitance Requirement
Computed and Experimental Results
Capacitance Requirement on Load
Summary
SEIG with Asymmetrically Connected Impedances and Excitation Capacitances
Circuit Model
Performance Analysis
Computed and Experimental Results
Modified Steinmetz Connection
Simplified Steinmetz Connection
Summary
Self-regulated SEIG for Single-Phase Loads
Circuit Connection and Analysis
Effect of Series Compensation Capacitance
Experimental Results and Discussion
Effect of Load Power Factor
Summary
SEIG with the Smith Connection
Circuit Connection and Operating Principle
Performance Analysis
Balanced Operation
Table of Contents provided by Publisher. All Rights Reserved.

ISBN: 9780470062081
ISBN-10: 0470062088
Series: Wiley - IEEE
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 241
Published: 1st January 2008
Country of Publication: US
Dimensions (cm): 25.07 x 20.8  x 2.06
Weight (kg): 0.6