声明
摘要
ABSTRACT
TABLE OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
CHAPTER 1:INTRODUCTION
1.1 Renewable energy resources
1.2 Distributed generation and microgrid
1.3 Grid-connected inverter
1.4 Research motivations
1.5 Original contributions
1.6 Thesis overview
CHAPTER 2:BACKGROUND AND LITERATURE REVIEW
2.1 Introduction
2.2 Renewable-energy-based grid-connected inverter controller
2.2.1 Power controller for grid-connected inverter
2.2.2 Voltage-controlled power control
2.2.3 Current-controlled power control
2.2.4 Power control based on virtual-flux control
2.2.5 Direct power control
2.3 Phase-Locked Loop
2.3.1 Basic Structure of a Phase-Locked Loop
2.3.2 PLL based on second-order generalized integrator
2.4 Maximum power point tracker (MPPT) control
2.5 Grid requirements for renewable-energy-based grid-connected inverter
2.6 Summary
CHAPTER 3:MULTI-FUNCTION CONVERTER BASED ON LYAPUNOV FUNCTION USED IN A PHOTOVOLTAIC SYSTEM
3.1 Introduction
3.2 System description
3.3 Block diagram of the control system
3.4 Multi-function controller design based on the Lyapunov function
3.4.1 Generalized mathematical model of the PVG
3.4.2 Control strategy based on Lyapunov function
3.5 Simulation and experimental results
3.5.1 Simulation results
3.5.2 Experimental results
3.6 Summary
CHAPTER4:ROBUST CONTROL OF MULTI-FUNCTION CONVERTER FOR USE IN RENEWABLE-ENERGY-BASED INVERTERS CONSIDERING UNCERTAIN PARAMETERS
4.1 Introduction
4.2 General system description
4.3 Design of the REG control system based on the Lyapunov function
4.3.1 Generalized mathematical model of the REG in d-q synchronous reference frame
4.3.2 Preliminary design of the REG control system based on the Lyapunov function
4.3.3 Impact analysis impact of unpredictable parameters on the stability condition
4.3.4 Generalized design of the REG control system
4.4 Implementation of the control system based on the Lyapunov function
4.5 Simulation and experimental results
4.5.1 Simulation results
4.5.2 Experimental results
4.6 Summary
CHAPTER 5:A GENERALIZED DESIGN OF A MULTI-LOOP CONTROLLER USED IN A THREE-PHASE LCL-FILTER-BASED GRID-CONNECTED INVERTER WITH CONSIDERING VARYING SYSTEM PARAMETERS
5.1 Introduction
5.2 Mathematical model of the three phase LCL-filter-based grid-connected inverter
5.3 Preliminary design of the LCL-filter-based grid-connected inverter control system
5.3.1 Control strategy
5.3.2 Preliminary design of the LCL-filter-based grid-connected inverter control system
5.4 Generalized design of the three-phase LCL-filter-based grid-connected inverter control system
5.4.1 Analysis of the change of control coefficient bounds versus the change of system parameters
5.4.2 Generalized design of three-phase LCL-filter-based grid-connected inverter control system
5.5 Implementation of the control system based on DSP
5.6 Simulation and experimental results
5.6.1 Simulation results
5.6.2 Experimental results
5.7 Summary
CONCLUSION AND FUTURE WORK
ACKNOWLEDGEMENTS
REFERENCES
附录:详细中文摘要
LIST OF PUBLICATIONS