Description
Unlike conventional power plants, wind plants emit no air pollutants or greenhouse gases—and wind energy is a free, renewable resource. However, the induction machines commonly used as wind generators have stability problems similar to the transient stability of synchronous machines. To minimize power, frequency, and voltage fluctuations caused by network faults or random wind speed variations, control mechanisms are necessary. Wind Energy Systems: Solutions for Power Quality and Stabilization clearly explains how to solve stability and power quality issues of wind generator systems.
Covering fundamental concepts of wind energy conversion systems, the book discusses several means to enhance the transient stability of wind generator systems. It also explains the methodologies for minimizing fluctuations of power, frequency, and voltage.
Topics covered include:
- An overview of wind energy and wind energy conversion systems
- Fundamentals of electric machines and power electronics
- Types of wind generator systems
- Challenges in integrating wind power into electricity grids
- Solutions for power quality problems
- Methods for improving transient stability during network faults
- Methods for minimizing power fluctuations of variable-speed wind generator systems
This accessible book helps researchers and engineers understand the relative effectiveness of each method and select a suitable tool for wind generator stabilization. It also offers students an introduction to wind energy conversion systems, providing insights into important grid integration and stability issues.
Table of Contents
Overview
Introduction
Why Renewable Energy
Wind Energy
Advantages and Disadvantages of Wind-Generated Electricity
Worldwide Status of Wind Energy
Aim and Scope of the Book
References
Wind Energy Conversion System
Introduction
Fundamental Concept
Wind Energy Technology
Basic Components of a Wind Turbine System
Types of Wind Turbines
Modeling of Wind Turbine
Chapter Summary
References
Electric Machines and Power Systems
Introduction
DC Machines
AC Machines
Electrical Power Systems
Power Quality
Chapter Summary
References
Power Electronics
Introduction
Power Devices
Rectifier
Inverter
Chopper
Cycloconverter
Pulse Width Modulation Scheme
PWM VSC
Current Source Inverter
Chapter Summary
References
Wind Generators
Introduction
Fixed-Speed Wind Energy Conversion Systems
Variable Speed Wind Energy Conversion Systems
Wind Generators
Wind Generator Characteristics
Maximum Power Point Tracking System
WG Total Efficiency Calculation
Chapter Summary
References
Wind Generator Grid Integration Issues
Introduction
Transient Stability and Power Quality Problems
Variability of Wind Power
Power, Frequency, and Voltage Fluctuations Due to Random Wind Speed Variation
Grid Connection Requirements
Design and Operation of Power Systems
Storage Options
Grid Infrastructure
Wind Power’s Contribution to System Adequacy
Chapter Summary
References
Solutions for Power Quality Issues of Wind Generator Systems
Introduction
Various Energy Storage Systems
Energy Storage Systems Compared
Using SMES to Minimize Fluctuations in Power, Frequency, and Voltage of Wind Generator Systems
Power Quality Improvement Using a Flywheel Energy Storage System
Constant Power Control of DFIG Wind Turbines with Supercapacitor Energy Storage
Output Power Leveling of Wind Generator Systems by Pitch Angle Control
Chapter Summary
References
Solutions for Transient Stability Issues of Fixed-Speed Wind Generator Systems
Introduction
Model System
Pitch Control Method
Superconducting Magnetic Energy Storage Method
Static Synchronous Compensator (STATCOM) Method
Braking Resistor Method
Superconducting Fault Current Limiter Method
Stabilization Methods Compared
Chapter Summary
References
Fault Ride-Through Capability of Variable-Speed Wind Generator Systems
Introduction
Doubly Fed Induction Generator Systems
Wound Field Synchronous Generator Systems
Permanent Magnet Synchronous Generator Systems
Switched Reluctance Generator System
Chapter Summary
References
Index
