Analog Emulation Of Direct-Drive Permanent Magnet Wind Power Generation System And Research Of MPPT Method

Wind as a renewable, clean non-polluting, inexhaustible energy, become an important direction of the world's renewable energy development. Permanent magnet direct drive wind turbines due to mechanical loss is small, efficient operation, low cost for maintenance have become the focus of research models. This paper studies two aspects, one is direct-drive wind power system simulation, the other is the maximum power point tracking(MPPT). Comparative advantages and disadvantages of the common topology.This paper first introduces the research background and significance of the subject, research at home and abroad, point out that a series of benefits in direct-drive wind power generation system. is currently a hot research models at home and abroad. second, from the operating principle of direct-drive wind power generation system. A more detailed theoretical analysis on permanent magnet direct-drive wind power generation system. Give the wind speed, wind machines, permanent magnet synchronous generator mathematical model. On this basis, establish some part of the matlab model and the matlab model of three-phase rectifier+triple boost current. Calculate the relevant parameters. Simulated the various parts and the whole wind power system and get better results. Besides, in order to facilitate laboratory studies. Carried out the study of simulating wind turbine characteristics by the DC motor. This article focuses on carrying out a direct-drive wind power generation MPPT method. Comparative and analysis of three kinds of hill-climbing algorithm. through simulation of the three methods to track the effects of power and the system dynamic and steady-state characteristics. Conclusion is the improved variable step-size algorithm (third) has to track a smooth and efficient conclusion.Finally, design and production of the three-phase rectifier+triple boost power conversion main circuit. Design control unit with DSP as the core, write and debug the software. Study three different power tracking method and give comparing results.