Electro-mechanical mixed stepless speed-changing wind power generation plant

A wind power generation device, a technology of stepless speed change, applied in electromechanical devices, electromechanical transmission devices, wind power generation, etc., can solve the problems of reduced efficiency of electrical transmissions, reduced utilization efficiency of wind power generation systems, etc., to improve reliability and improve operating points and high operating efficiency and reliability

Inactive Publication Date: 2008-09-24
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, when the wind speed is low and the variable speed is relatively large, the efficiency of the electrical transmission is significantly reduced, resulting in a reduction in the utilization efficiency of the entire wind power generation system

Method used

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  • Electro-mechanical mixed stepless speed-changing wind power generation plant
  • Electro-mechanical mixed stepless speed-changing wind power generation plant

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Embodiment Construction

[0017] The electromechanical hybrid continuously variable speed wind power generation device of the present invention includes a wind turbine 1, a mechanical speed increaser 2, an electric transmission 3, a generator 4, a first power converter 5, and a second power converter 6; wherein: the mechanical speed increaser The gear 2 and the electrical transmission 3 constitute the speed regulation part of the electromechanical hybrid continuously variable speed wind power generation system; the electrical transmission 3 includes a stator 3.1, an outer rotor 3.2, an inner rotor 3.3, and a slip ring 3.4, and a multi-phase winding is arranged on the inner rotor 3.3 , connected to the first power converter 5 through the slip ring 3.4 and brushes; multi-phase windings are also set on the stator 3.1 and connected to the second power converter 6; the electric transmission 3 has two shafts, one side of which is the input shaft , connecting the mechanical speed increaser 2 and the outer roto...

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Abstract

An electromechanical infinite variable speed wind generating device is capable of realizing the real variable speed constant frequency operation, remarkably improving the reliability and the operation efficiency of a system as well as the operating factor of the wind energy, remarkably promoting the working point and the operating efficiency of an electrical variable transmission as well as the efficiency of the whole system. The device includes a wind machine (1), a mechanical speed increaser(2), an electrical transmission (3), a generator (4), a first power inverter (5), a second power inverter (6) and a third power inverter (7). If a DC power consists of an energy storage unit (storage battery, capacitor, etc), partial power can be stored in a form of electricity, or the energy in the energy storage can be released into an output shaft. When the power of the wind machine is larger than that of the generator, the redundant energy can be converted into electricity and stored; on the contrary, when the power of the wind machine is smaller than that of the generator, the energy in the energy storage unit can be released to complement the insufficiency of the inputted power.

Description

technical field [0001] The invention is a device for wind power generation, which belongs to the technical field of wind power generator manufacturing. Background technique [0002] As the whole society continues to pay attention to energy and environmental issues, the development and utilization of renewable energy is showing a trend of accelerated development. Wind energy exists widely on the earth and is currently one of the most mature renewable energy sources that people have mastered. A wind turbine is a device that converts mechanical energy into electrical energy in a wind power generation system. It is a tool that connects the prime mover with the output electrical energy. It not only directly affects the quality and efficiency of the output electrical energy, but also affects the performance and system of the entire wind power conversion system. Structure. Since wind energy is an energy source with low energy density, wind turbines driven by wind energy work at re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K51/00F03D9/00F03D9/25
CPCY02E10/72
Inventor 程明孙西凯
Owner SOUTHEAST UNIV
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