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The Investigation and Research on the Squirrel-cage Inductor Generator Based Wind Power System

Author: WuJingZhi
Tutor: CaiXu
School: Shanghai Jiaotong University
Course: Power Electronics and Power Drives
Keywords: Wind power Squirrel-cage induction generator Back-to-back PWM converter Low Voltage Ride Through
CLC: TM614
Type: Master's thesis
Year: 2011
Downloads: 341
Quote: 0
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Abstract


In today 's increasingly serious energy shortage and environmental pollution , wind energy as one of the most important alternative energy caused more and more attention has been tremendous development of wind power technology in the world . Currently, the main wind turbine type, including double-fed wind turbine , electrically excited synchronous generators , permanent magnet direct drive generator sets, semi - direct-drive permanent magnet generator sets , squirrel-cage asynchronous full-power generator sets . Although the double-fed wind turbine still occupies a dominant position in the field of wind power , but with the development of high-power electronic devices , power converting wind power to keep the high power level development . Among them, the squirrel cage motor structure is simple , inexpensive , and easy to maintain , making wind power generation system based on the full power of the squirrel-cage induction motor by more and more attention . This article focuses on the squirrel-cage full power wind power generation system research and systems analysis . The article first describes the structure of the the cage full power wind power generation system , basic principles and operational characteristics . And dual PWM converter with squirrel-cage induction generator operating mechanism organically combine to establish a mathematical model of squirrel cage induction wind power system . The principle of induction motor vector control , combined with squirrel cage wind power generation system the directional motor rotor flux-based model , which gives the machine side converter control strategy . At the same time , the establishment of a mathematical model of the network -side converter , and derive the network -side converter control strategy . The low voltage power grid fault timing side and network side converter and DC side discharge loop control strategy . At the same time , the article also given in the the grid voltage unbalance situation , the system control strategy . Finally, a detailed model of the squirrel-cage 3MW wind turbine using Matlab / Simulink , squirrel cage wind power generation system operating conditions, operating characteristics and its power grid voltage drop , and the case of unbalanced voltage operating characteristics for a detailed simulation and analysis . The operational status of the squirrel-cage motor wind power generation system based the dSPACE control laboratory 350KW prototype platform , experimental analysis .

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CLC: > Industrial Technology > Electrotechnical > Power generation, power plants > Variety of power generation > Wind power
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