Switch reluctance wind power generator converter and control method thereof

Abstract

The invention discloses a switch reluctance wind power generator converter. The switch reluctance wind power generator converter consists of a converter main circuit, an output bus capacitor, an isolated DC/DC converter, an excitation and discharge main circuit; the output end of the converter main circuit is connected to the output bus capacitor, and also serves as the input end of the isolated DC/DC converter; the output end of the isolated DC/DC converter is connected to the input end of the excitation and discharge main circuit; the output end of the excitation and discharge main circuit is connected to the input end of the converter main circuit; the output anode end of the converter main circuit is also connected to the discharge input end of the excitation and discharge main circuit; and the output anode end of the excitation and discharge main circuit, the output cathode end of the converter main circuit and the input anode end of the converter main circuit are short-circuited. Under the structure, through three types of control modes under different conditions, wide power generation range, high power generation capacity and multi-angle flexible control are realized, and the switch reluctance wind power generator converter is applicable to various wind power generation fields.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a converter circuit topology system of a switched reluctance wind power generator and a control method thereof. Background technique [0002] The use of switched reluctance generators to generate electricity is a new type of power generation; at present, there are no real commercial cases of using switched reluctance generators in power generation systems adapted to wind characteristics at home and abroad. The reason is that switched reluctance generators The unique structure and variable flow system are relatively special, and are being studied in recent years. [0003] Wind power generation is a sunshine industry. Most of the current wind power generators use permanent magnet synchronous or doubly-fed asynchronous generators. The former has shown the disadvantage of high cost in recent years, especially the extensive use of rare earth permanent magnet materials. The latter ...

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Problems solved by technology

[0008] Among the current considerations in the industry, a big trend is to make the converter more and more complex, requiring more and more switching tubes, and the frequent switching actions of the switching tubes, especially PWM control, etc., resulting in a large number of switching tubes. Loss, consumes a lot of power, reduces power generation efficiency

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