A variable speed switch reluctance wind generator forced excitation pump step-up converter system

A technology for wind turbines and converter systems, which is applied in the direction of controlling generators, controlling generators, and control systems through magnetic field changes, which can solve the problem of loss and heat dissipation of switching tubes, reduce reliability, and increase the complexity of converter systems, etc. problem, to achieve the effect of low switching loss, improved reliability, and simple structure

Inactive Publication Date: 2019-08-23
CHINA JILIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0010] Converter circuits naturally use power switch tubes, especially when many switch tubes are working at high frequency switching, the loss of the switch tubes and the heat dissipation problems caused by them are serious. Switching devices and their control systems are relatively popular, of course, this will inevitably increase the complexity of the inverter system and reduce the reliability

Method used

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  • A variable speed switch reluctance wind generator forced excitation pump step-up converter system

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Embodiment Construction

[0029] The switched reluctance motor in this embodiment has three-phase windings, which are M / N / P three-phase windings according to the order distributed on the stator. Each phase winding is composed of two branch windings and is symmetrically wound on different salient poles of the stator. above, that is, the six salient poles of the stator, as attached figure 1 Shown is the converter circuit of the three-phase winding switched reluctance wind power generator of this embodiment.

[0030] A variable-speed switched reluctance wind power generator forced excitation pump step-up converter system, composed of five switch tubes, four capacitors, three diodes, an inductor, a transformer, and three phase windings, the first switch tube V1 The anode is connected to one end of the inductor L, the anode of the second diode D2, and the positive electrode of the second capacitor C2, the other end of the inductor L is connected to the negative electrode of the first capacitor C1, the catho...

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Abstract

A variable-speed switched reluctance wind power generator force-excited pump boost converter system consists of five switching transistors, four capacitors, three diodes, one inductor, one transformer, three phase windings. The first capacitor and the second capacitor help to enhance an excitation capability and assist the enhancement of an output voltage pumping capability. Not excessive switching transistors are required, the output voltage and excitation voltage can be adjusted, and the system can be kept stable under variable-speed conditions. Most switching transistors have extremely lowswitching frequency, which improves the reliability of the system. The system is very suitable for the application of small-and-medium-power switched reluctance generators in the field of wind power single or microgrid connection.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a self-excited converter system and a control method thereof, which can strengthen the excitation of a switched reluctance wind power generator, directly pump up the voltage, and have a simple, flexible and controllable structure. Background technique [0002] The switched reluctance motor has a simple and solid structure, low manufacturing cost, no windings on the rotor, no permanent magnets, high reliability, and the failure of one phase winding does not affect the normal operation of the other phase windings. It has strong fault tolerance and has broad application prospects. [0003] At present, in the field of wind power, asynchronous generators or permanent magnet synchronous generators are mostly used as main generators, which have complex structures, high costs, and do not have the advantages of switched reluctance motors. Machine research and practical exploration. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/30H02P101/15
Inventor 孙冠群何金龙李刚
Owner CHINA JILIANG UNIV
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