Engineering Book from C.H.I.P.S.

Electric Generators Handbook
Variable Speed Generators
by Ion Boldea

Variable Speed Generators provides an in-depth examination of variable-speed generators for both stand-alone and grid-connected applications.


  • Provides a comprehensive survey of all types of variable-speed electric generators
  • Covers the various topologies, steady state, transients, modeling, performance, control, design, and testing
  • Includes self-contained coverage of variable-speed generators not available in any other single source
  • Imparts practical, state-of-the-art knowledge for the design and control of starter alternators for hybrid-electric vehicles, wind and hydro generators, and linear motion generators


Wound Rotor Induction Generators (WRIGS): Steady State

  • Construction Elements
  • Steady-State Equations
  • Equivalent Circuit
  • Phasor Diagrams
  • Operation at the Power Grid
  • Autonomous Operation of WRIG
  • Operation of WRIG in the Brushless Exciter Mode
  • Losses and Efficiency of WRIG

Wound Rotor Induction Generators: Transients and Control

  • The WRIG Phase Coordinate Model
  • The Space-Phasor Model of WRIG
  • Space-Phasor Equivalent Circuits and Diagrams
  • Approaches to WRIG Transients
  • Static Power Converters for WRIGs
  • Vector Control of WRIG at Power Grid
  • Direct Power Control (DPC) of WRIG at Power Grid
  • Independent Vector Control of Positive and Negative Sequence Currents
  • Motion-Sensorless Control
  • Vector Control in Stand-Alone Operation
  • Self-Starting, Synchronization, and Loading at the Power Grid
  • Voltage and Current Low-Frequency Harmonics of WRIG

Wound Rotor Induction Generators (WRIGS): Design and Testing

  • Design Specifications: An Example
  • Stator Design
  • Rotor Design
  • Magnetization Current
  • Reactances and Resistances
  • Electrical Losses and Efficiency
  • Testing of WRIGs

Self-Excited Induction Generators

  • The Cage Rotor Induction Machine Principle
  • Self-Excitation: A Qualitative View
  • Steady-State Performance of Three-Phase SEIGs
  • Performance Sensitivity Analysis
  • Pole Changing SEIGs for Variable Speed Operation
  • Unbalanced Operation of Three-Phase SEIGs
  • One Phase Open at Power Grid
  • Three-Phase SEIG with Single-Phase Output
  • Two-Phase SEIGs with Single-Phase Output
  • Three-Phase SEIG Transients
  • Parallel Connection of SEIGs
  • Connection Transients in Cage Rotor Induction Generators at Power Grid
  • More on Power Grid Disturbance Transients in Cage Rotor Induction Generators

Stator Converter Controlled Induction Generators(SCIGs)

  • Grid Connected SCIGs: The Control System
  • Grid Connection and Four-Quadrant Operation of SCIGs
  • Stand-Alone Operation of SCIG
  • Parallel Operation of SCIGs
  • Static Capacitor Exciter Stand-Alone IG for Pumping Systems
  • Operation of SCIGs with DC Voltage Controlled Output
  • Dual Stator Winding for Grid Applications

Automotive Claw-Pole-Rotor Generator Systems

  • Construction and Principle
  • Magnetic Equivalent Circuit (MEC) Modeling
  • Three-Dimensional Finite Element Method (3D FEM) Modeling
  • Losses, Efficiency, and Power Factor
  • Design Improvement Steps
  • The Lundell Starter/Generator for Hybrid Vehicles

Induction Starter/Alternators (ISAs) for Electric Hybrid Vehicles (EHVs)

  • EHV Configuration
  • Essential Specifications
  • Topology Aspects of Induction Starter/Alternator (ISA)
  • ISA Space-Phasor Model and Characteristics
  • Vector Control of ISA
  • DTFC of ISA
  • ISA Design Issues for Variable Speed

Permanent-Magnet-Assisted Reluctance Synchronous Starter/Alternators For Electric Hybrid Vehicles

  • Topologies of PM-RSM
  • Finite Element Analysis
  • The d-q Model of PM-RSM
  • Steady-State Operation at No Load and Symmetric Short-Circuit
  • Design Aspects for Wide Speed Range Constant Power Operation
  • Power Electronics for PM-RSM for Automotive Applications
  • Control of PM-RSM for EHV
  • State Observers without Signal Injection for Motion Sensorless Control
  • Signal Injection Rotor Position Observers
  • Initial and Low Speed Rotor Position Tracking

Switched Reluctance Generators and Their Control

  • Practical Topologies and Principles of Operation
  • SRG(M) Modeling
  • The Flux/Current/Position Curves
  • Design Issues
  • PWM Converters for SRGs
  • Control of SRG(M)s
  • Direct Torque Control of SRG(M)s
  • Rotor Position and Speed Observers for Motion-Sensorless Control
  • Output Voltage Control in SRG

Permanent Magnet Synchronous Generator Systems

  • Practical Configurations and Their Characterization
  • Airgap Field Distribution, emf and Torque
  • Stator Core Loss Modeling
  • The Circuit Model
  • Circuit Model of PMSG with Shunt Capacitors and AC Load
  • Circuit Model of PMSG with Diode Rectifier Load
  • Utilization of Third Harmonic for PMSG with Diode Rectifiers
  • Autonomous PMSGs with Controlled Constant Speed and AC Load
  • Grid-Connected Variable-Speed PMSG System
  • The PM Genset with Multiple Outputs
  • Super-High-Speed PM Generators: Design Issues
  • Super-High-Speed PM Generators: Power Electronics Control Issues
  • Design of a 42 Vdc Battery-Controlled-Output PMSG System
  • Methods for Testing PMSGs
  • Note on Medium-Power Vehicular Electric Generator Systems

Transverse Flux and Flux Reversal Permanent Magnet Generator Systems

  • The Three-Phase Transverse Flux Machine (TFM): Magnetic Circuit Design
  • TFM: The d-q Model and Steady State
  • The Three-Phase Flux Reversal Permanent Magnet Generator: Magnetic and Electric Circuit Design

Linear Motion Alternators (LMAs)

  • LMA Principle of Operation
  • PM-LMA with Coil Mover
  • Multipole LMA with Coil Plus Iron Mover
  • PM-Mover LMAs
  • The Tubular Homopolar PM Mover Single-Coil LMA
  • The Flux Reversal LMA with Mover PM Flux Concentration
  • PM-LMAs with Iron Mover
  • The Flux Reversal PM-LMA Tubular Configuration
  • Control of PM-LMAs
  • Progressive-Motion LMAs for Maglevs with Active Guideway


click here to see books of related interest


Electric Generators Handbook
Variable Speed Generators
by Ion Boldea
2005 • 552 pages • $132.95 + shipping
Electric Generators Handbook
Synchronous Generators
by Ion Boldea

2005 • 448 pages • $132.95 + shipping
Electric Generators Handbook 2-Volume Boxed Set
2005 • $225.95 + shipping
Texas residents please add 6.75 % sales tax

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