Wind power generating system based on direct current generator

A technology of wind power generation system and DC generator, applied in the direction of control of generators, wind turbines, wind turbines, etc., can solve the problems of high failure rate of gearboxes, increase maintenance workload, reduce wind energy utilization efficiency, etc., and achieve output The power is basically constant, the maintenance workload is reduced, and the effect of good voltage regulation characteristics

Inactive Publication Date: 2007-03-07
HOHAI UNIV
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Problems solved by technology

[0003] Compared with the traditional asynchronous generator, the doubly-fed asynchronous generator has obvious advantages, but this kind of wind turbine needs to be equipped with a speed-up gearbox, which not only increases the unit cost and operating noise, reduces the utilization efficiency of wind energy, but also the gear The failure rate of the box is relatively high during operation, especia

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  • Wind power generating system based on direct current generator
  • Wind power generating system based on direct current generator
  • Wind power generating system based on direct current generator

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[0015] Referring to Figure 1, the structure is that in the wind power generation system, the wind turbine is used to directly drive the DC generator to generate DC power, which is then transformed into qualified AC power through the IGBT inverter and incorporated into the system through the step-up transformer. The connection relationship between them: the wind turbine 1 is connected to the first input terminal of the DC generator 2, the output terminal of the DC generator 2 is connected to the input terminal of the IGBT inverter 3, and the output terminal of the IGBT inverter 3 is connected to the input terminal of the IGBT inverter 3. The input ends of the step-up transformer 4 are connected, the output end of the step-up transformer 4 is connected with the power grid 5, the output end of the power controller 6 is connected with the first input end of the wind turbine 1, and the output end of the voltage controller 7 is connected with the DC generator The second input termina...

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Abstract

This invention relates to wind power generation system based on direct current, which adopts wind machine to directly drive direct current motor to generate energy through IGBT converter into legal alternating electricity into electronic network. According to network, it can join buffer memory battery between direct motor output and IGBT inverter and through memory battery discharging to compensate wind speed within small range to ensure motor output power basic stability.

Description

technical field [0001] The invention relates to a key technology of a wind power generation system based on a DC generator, and belongs to the field of electrical control engineering. Background technique [0002] With the development of human society, energy and environmental issues have become very urgent issues facing the survival and development of human society today. The energy structure based on clean and renewable energy will become an inevitable trend of future development. As a clean, non-polluting, and easy-to-achieve large-scale development of renewable energy, wind energy is attracting more and more attention from all countries in the world. Wind power will become one of the most promising new energy sources in the 21st century. The wind turbine is one of the core equipment in the wind power system. Its normal operation is an important guarantee for the safe, reliable, high-quality and economical operation of the entire wind power system. It is also a key factor...

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Application Information

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IPC IPC(8): H02J3/00H02J3/38H02P9/04H02P9/14F03D7/00
CPCY02E10/763Y02E10/723Y02E10/72Y02E10/76
Inventor 马宏忠鞠平严惠敏张利民徐树峰王宏华韩敬东丁媛媛
Owner HOHAI UNIV
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