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Gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on differential mechanism

A wind power generation system and composite drive technology, applied in wind turbine components, wind power generation, wind turbines, etc., can solve problems such as reliability and cost research, achieve excellent low voltage ride-through capability, support grid voltage recovery, power factor adjustable effects

Inactive Publication Date: 2014-05-07
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The implementation of the above-mentioned patented solutions requires the support of complex stepless variable speed drive devices and real-time control speed regulation strategies, and its reliability and cost still need further research

Method used

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  • Gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on differential mechanism
  • Gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on differential mechanism
  • Gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on differential mechanism

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Embodiment Construction

[0028] The present invention provides a grid-connected wind power generation system based on differential speed mechanism self-adaptive speed regulation compound transmission. The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029]exist figure 1 The middle wind wheel 1 is fixedly connected with the low-speed input shaft 2 of the fixed-speed-ratio speed-up box 3, and the total power transmitted by the wind wheel is P 1 ; The high-speed output shaft 4 of the fixed speed ratio speed-up box 3 transmits the total power P through the first shaft coupling 5 1 To the input shaft 31 of the parallel shaft gear shunt transmission box 30, the rotating speed of the input shaft 31 is n 31 ;total power P 1 The main power P is divided by 30 points through the parallel shaft gear split transmission box 2 and shunt power P 3 , P 1 =P 2 +P 3 . (Such as figure 2 shown)

[0030] The main output sha...

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Abstract

The invention discloses a gird-connected wind power generation system with self-adaptive speed regulation composite transmission based on a differential mechanism, belonging to the field of wind power development devices of regenerated clean energy. The wind power generation system comprises a wind wheel, a fixed speed ratio gearbox, a parallel shaft gear shunt transmission box, a differential gearbox, a low-power constant rotating speed drive device and a synchronous generator. According to the invention, the time varying rotating speed of the wind wheel and the constant rotating speed provided by the low-power constant rotating speed device are coupled to form a rotating speed adjusting system by utilizing the differential, so that the output rotating speed is constant; a speed change drive device and a real-time control speed regulation strategy are unnecessary for the system, so that the time varying rotating speed of the wind wheel can be automatically adapted, the time varying rotating speed of the wind wheel is converted to the constant rotating speed and is input into the synchronous generator, so that the synchronous generator is operated at the rated rotating speed. The control difficulty and the control cost are greatly reduced, the system structure and the control strategy are simplified, and the efficiency and the operation reliability of the speed regulation transmission system are improved.

Description

technical field [0001] The invention belongs to the field of renewable and clean energy wind power development equipment. In particular, it relates to a grid-connected wind power generation system based on differential speed mechanism adaptive speed regulation compound transmission. Specifically, the system can automatically adapt to the time-varying speed of the wind rotor of the wind turbine, and can realize a variable-speed constant-frequency wind power generation system that drives the synchronous generator of the unit at a constant speed. Background technique [0002] Wind power, as the power generation method with the most large-scale development and commercial development prospects among renewable energy sources, has been widely developed and utilized in countries all over the world. The grid-connected wind power generation system is the main development direction of wind power generation at home and abroad. According to the data released by the China Electricity Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D9/00F03D11/02
CPCY02E10/722Y02E10/72
Inventor 芮晓明苏睿武鑫郑辉张穆永
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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