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Research on Composite Rotor Structure Wind Generator for VSCF Power System

Author: ShengShan
Tutor: SongLiWei
School: Harbin Institute of Technology
Course: Electrical Engineering
Keywords: Wind Power VSCF Permanent magnet synchronous generator Direct drive Composite rotor structure Planetary gear
CLC: TM614
Type: Master's thesis
Year: 2010
Downloads: 61
Quote: 0
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Abstract


Wind power is a new energy in the most mature technology , the largest and the best prospects for commercial development way of generating electricity . VSCF is currently the world's most advanced wind power technology, which is developed in the 1970s, a new form of power generation . Permanent magnet synchronous generator can be driven directly by the wind turbine , which has a simple structure , good ventilation , low speed, moment of inertia , high reliability and high efficiency , more suitable for direct drive wind power generation system . Wind power generator system is toward improving system reliability, reduce maintenance , reduce component , reduce costs, improve system efficiency and integration direction. In this paper, a method for direct drive VSCF Wind Power Generation System composite rotor structure generators. The motor through planetary gear motors combine the two , which is characterized by electromagnetic systems and mechanical systems are integrated. When the wind turbine input speed changes, through the planetary gear differential adjustment to achieve a constant current generator output frequency to achieve variable speed constant frequency ; while eliminating the traditional stand-alone wind energy conversion system up gearbox and generator with full power grid between the rectifier inverter link. Simplifying the structure of the system ; and through the auxiliary variable speed motors can balance the external input mechanical power and generator output power imbalances and improve wind energy conversion efficiency. Based on the various structural forms of motor analysis, electromagnetic coupling systems and mechanical systems design methods and matching technology research, design and optimize electromagnetic system parameters and the parameters of the mechanical system , give full play to the characteristics of the two systems , and explore the motor of the best mode of operation and control strategy, so that the motor can with wind turbine and grid parameters to get the best match.

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