Dissertation
Dissertation > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,) > Wind turbines

The Research of Passive Automatic Maximum Wind Energy Tracking Wind Power Generation System

Author BaiRu
Tutor KouBaoQuan
School Harbin Institute of Technology
Course Electrical Engineering
Keywords Passive type Permanent magnet synchronous generator Maximum wind energy tracking Controllable Reactor Wind Power
CLC TM315
Type Master's thesis
Year 2010
Downloads 79
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Off grid wind turbine systems generally use the generator output directly to charge the battery , and control aspects of wind power conversion , due to the characteristics of the power output of the generator with a maximum power output of the wind turbine characteristics do not match , so the change of wind speed The wind turbine can not always run best tip speed ratio , wind energy utilization coefficient is relatively low , generally less than 0.3 . According to the the Bates theoretical limits of wind energy utilization coefficient of 0.593 , If you control the wind turbine always best tip speed ratio operation , the generating capacity can be increased by 20 % to 30% . This paper presents a new off-grid wind turbine systems , by a two-winding permanent magnet synchronous generator , two sets of three-phase reactors, rectifiers , battery and load . The generator winding turns than winding 2, and therefore , at a lower speed when only the winding of an output power at high speed , the windings 1 and 2 are simultaneously output power . The system output power characteristic curve approximation with the maximum power curve of the wind turbine is consistent , which automatically track the optimal tip speed ratio . Design method based on assumptions and produced a 300W prototype match simulation and experiments show that the system is able to achieve maximum output power characteristic curve of the wind turbine power curve within a wide speed range , and with the traditional off-grid generators comparison , a substantial increase of wind energy utilization coefficient .

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