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Wind power generation system based on reverse loose matrix converter and method thereof

A technology of wind power generation system and matrix converter, applied in wind power generation, control system, control generator, etc., can solve the problems of limited application of matrix converter, huge number of switches, reduced reliability, etc., and achieves compact structure and no harmonics. The effect of wave pollution and reliability improvement

Inactive Publication Date: 2011-06-29
CENT SOUTH UNIV
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AI Technical Summary

Problems solved by technology

Although the matrix converter has many advantages, due to the large number of switches, the cost is too high and the reliability is reduced, which seriously limits the application of the matrix converter in the field of power generation.

Method used

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  • Wind power generation system based on reverse loose matrix converter and method thereof
  • Wind power generation system based on reverse loose matrix converter and method thereof
  • Wind power generation system based on reverse loose matrix converter and method thereof

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Embodiment 1

[0047] figure 1 It is the topological structure of the inverse loose matrix converter, which consists of an input filter (also called a filter), an inverse loose matrix converter rectification stage, an active protection circuit, and an inverse loose matrix converter inversion stage. The current-mode rectification stage is directly connected to the voltage-mode inverter stage. It can be seen that the current flow direction of the rectification stage of the inverse loose matrix converter is unidirectional, that is, energy can only flow from the inverter stage to the rectification stage and inject into the grid.

[0048] During normal operation, there is no difference between the modulation strategy of the inverse loose matrix converter and the modulation strategy of the conventional dual-stage matrix converter, except that it is slightly different at startup.

[0049] There are two start-up methods for the system. In the first one, all controllable switching devices in the inv...

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Abstract

The invention discloses a wind power generation system based on a reverse loose matrix converter and a method thereof, and the structure of the wind power generation system based on the reverse loose matrix converter is as follows: the alternating current side of a rectifier stage is connected with a power grid, the direct current side of the rectifier stage is in butt joint with the direct current side of an inverter stage, the alternating current side of the inverter stage is connected with the output end of a permanent magnet synchronous generator, and the permanent magnet synchronous generator is connected with a fan; the input side of an active protection circuit is connected with the direct current side of an inverter, and the output side of the active protection circuit is connected with the alternating current side of the rectifier stage; the rectifier stage is a three-phase rectifier stage formed by six power device components, and each power device component is formed by connecting a controllable semiconductor power switch with a power diode in series; and the inverter stage is a three-phase bridge type inverter formed by six IGBTs (insulated gate bipolar transistors). The wind power generation system based on the reverse loose matrix converter can convert and transmit energy in a green, high-efficient and reliable manner, and simultaneously ensure the simple and compact structure and the low cost of the system.

Description

technical field [0001] The invention belongs to the technical field of power electronics, electric transmission and renewable energy power generation systems, and relates to a new power electronics topology and a configuration scheme for a wind power generation system based on the topology, in particular to a wind power generation based on an inverse loose matrix converter systems and methods. Background technique [0002] Common power conversion devices of permanent magnet synchronous generator (PMSG) power generation systems include: AC-DC converters or AC-AC converters. Among them, AC-DC-AC converters usually use dual PWM converters, which usually require large-capacity electrolytic capacitors and bulky filter reactors. The existence of electrolytic capacitors will severely limit the service life of the power generation system, and bulky filter reactors are expensive. In short, the power generation system composed of this type of topology is fully functional, but the inv...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02M5/44H02M5/458H02J3/18H02P9/00
CPCY02E40/30Y02E10/763Y02E10/76
Inventor 孙尧粟梅王辉潘攀罗朝旭韩华于晶荣杨建廖威李幸陈辉华桂卫华王一军
Owner CENT SOUTH UNIV
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