Model And Simulink Of Double-Fed Wind Power System

As a kind of clean renewable resource, in the future wind power will play an increasingly important role in the field of energy. With the development of the variable speed constant frequency wind power generation technology, double-fed wind power system has become a research focus. This paper is to study the double-fed wind power generation system model and analysis simulation results.First, this paper study with the VSCF wind power system, has a detailed analysis of the double-fed wind power generation system components and working principle. And in accordance with the principle of wind turbine wind energy absorption to determine one of the control target in double-fed wind power generation system is the largest wind energy capture control. Secondly, detailed analysis the basic operating principle of double-fed generator and the energy flow under different conditions, established the mathematical model of the generator in three-phase stationary coordinate system and synchronous rotating coordinate system, and introduction of a coordinate transformation thinking. Again, using the AC-DC-AC dual-PWM converter as a AC excitation power for double-fed wind power generation system. Showing the circuit topology of the converter, and the mathematical model and control strategy of grid-side converter and rotor-side converter are discussed in detail. Ultimately determined to use voltage vector-oriented control strategies and space vector modulation technique on grid-side converter, and the rotor-side converter is used stator flux oriented vector control strategy.Finally, useing simulation software named Matlab/Simulink, separately establish the components of wind power system, such as wind speed, wind turbine, doubly-fed generator, AC-DC-AC dual-PWM converters, control systems and simulink module of SVPWM. Integrate different parts of the wind power system simulation model, to establish a complete simulation of double-fed wind power generation system. Through the simulation of the whole system to verify the various parts of the system mathematical model are created correctly and the corresponding control strategy is feasible. This provides a reliable Matlab/Simulink simulation system for further study on double-fed wind power generation system, with some theoretical and practical significance.