| 摘要 | 第1-7页 |
| Abstract | 第7-15页 |
| Chapter 1 Introduction | 第15-28页 |
| ·Introduction | 第15-17页 |
| ·Background and Status of domestic and abroad research | 第17-25页 |
| ·Installed capacity and growth rate | 第17-19页 |
| ·Status of domestic and abroad research | 第19-25页 |
| ·Aim and outlines of the dissertation | 第25-28页 |
| Chapter 2 Wind Turbine System | 第28-43页 |
| ·Introduction | 第28页 |
| ·Conversion of wind power | 第28-30页 |
| ·Characteristics curves of wind turbine | 第30-32页 |
| ·Power coefficient versus tip speed ratio characteristics curve | 第30-31页 |
| ·Power-speed characteristics curve | 第31页 |
| ·Torque-speed characteristics curve | 第31-32页 |
| ·Power control and output characteristics of wind turbine | 第32-38页 |
| ·Power characteristic of a wind turbine | 第33-34页 |
| ·Aerodynamic of Power Control | 第34-38页 |
| ·Passive stall control | 第34-36页 |
| ·Active stall control | 第36-37页 |
| ·Pitch control | 第37-38页 |
| ·Different configuration schemes of wind turbines | 第38-42页 |
| ·Fixed-speed wind turbine | 第38-39页 |
| ·Variable-speed wind turbine | 第39-42页 |
| ·Limited variable-speed wind turbine | 第39-40页 |
| ·Variable-speed wind turbine with DFIG | 第40-41页 |
| ·Variable-speed wind turbine with full scale converter | 第41-42页 |
| ·Brief summary | 第42-43页 |
| Chapter 3 Principle and configuration of DFIGs and its converters | 第43-60页 |
| ·Introduction | 第43页 |
| ·Steady-state operation of the DFIG | 第43-47页 |
| ·Rotor power converters | 第47-54页 |
| ·Voltage source inverter | 第48-51页 |
| ·DFIG system converters | 第51-54页 |
| ·Rotor side converter(RSC) | 第51页 |
| ·Grid side converter(GSC) | 第51-52页 |
| ·DC-link model | 第52-53页 |
| ·Back-to-back converters arrangement | 第53-54页 |
| ·DFIG system power flows | 第54-55页 |
| ·Crowbar protection circuits | 第55-59页 |
| ·Crowbar at rotor circuit | 第55-58页 |
| ·Crowbar at stator circuit | 第58-59页 |
| ·Series crowbar | 第58-59页 |
| ·Outer crowbar | 第59页 |
| ·Brief summary | 第59-60页 |
| Chapter 4 Modeling and Control of DFIG System | 第60-85页 |
| ·Introduction | 第60-61页 |
| ·Reference frame transformation | 第61-66页 |
| ·abc/αβ Reference frame transformation | 第62页 |
| ·abc/dq Reference frame transformation | 第62-66页 |
| ·Space-vector model of induction generator | 第66-69页 |
| ·Vector oriented control strategy | 第69-74页 |
| ·Principle of dq transformation | 第70页 |
| ·Priciple of vector control | 第70-71页 |
| ·Types of vector control | 第71-74页 |
| ·Direct FOC | 第71-73页 |
| ·Indirect FOC | 第73-74页 |
| ·dq Modeling of DFIG in synchronous rotating reference frame | 第74-76页 |
| ·Control algorithm | 第76-83页 |
| ·Control of the GSC | 第77-78页 |
| ·Control of RSC | 第78-83页 |
| ·Brief summary | 第83-85页 |
| Chapter 5 Simulation Results and Discussions | 第85-97页 |
| ·Introduction | 第85-86页 |
| ·Simulation results during normal grid conditions | 第86-87页 |
| ·Simulation results during grid over voltage | 第87-89页 |
| ·Simulation results during under voltage | 第89-91页 |
| ·Simulation results during change in the wind speed | 第91-92页 |
| ·Simulation results during change in the demand of reactive power | 第92-94页 |
| ·Simulation results during change in supply frequency | 第94-96页 |
| ·Brief summary | 第96-97页 |
| Chapter 6 Conclusion and Prospects | 第97-99页 |
| References | 第99-108页 |
| Published papers | 第108-109页 |
| Acknowledgements | 第109-110页 |
| About the author | 第110页 |
