A self-energized high-voltage conversion system for switched reluctance generators

A switched reluctance and generator technology, which is applied to control generators, control generators, and control systems through magnetic field changes. Mutual interference, improved reliability, and strong scalability

Inactive Publication Date: 2019-09-06
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In the power electronic conversion system, the switching loss of the switching tube is a major problem in high-frequency switching. In addition to reducing the system efficiency, if the large amount of heat generated by frequent switching is not dissipated in time, the switching tube will burn out and cause more serious consequences. , which is already an important topic in the field of modern power electronics engineering

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  • A self-energized high-voltage conversion system for switched reluctance generators

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Embodiment Construction

[0032] The switched reluctance generator of this embodiment is a three-phase winding, which are respectively M / N / P three-phase windings according to the order distributed on the stator, as shown in the attached figure 1 shown.

[0033] attached figure 1 Shown is a circuit structure diagram of a switched reluctance generator self-energized high-voltage converter system in this embodiment, which consists of a first converter branch 101, a second converter branch 102, a third converter branch 103, an isolation drop Composed of a voltage DC / DC converter 2, the first flow branch 101, the second flow conversion branch 102, and the third flow conversion branch 103 are connected in parallel at both input ends, and are connected with the isolated step-down DC / DC converter 2 Both ends of the output are connected, and the output terminals of the first conversion branch 101, the second conversion branch 102, and the third conversion branch 103 are connected in series to output, and are i...

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Abstract

The invention provides a self-excitation-reinforcing high-voltage conversion system of a switch reluctance generator. The system is composed of three conversion branches and an isolation and voltage-down DC / DC converter. The input ends of the three conversion branches are connected in parallel, the output ends of the three conversion branches are connected in series, thus, higher voltage output isobtained, excitation reinforced parts are distributed in all the conversion branches where all phases of windings are located respectively, independent excitation power sources are omitted, the system reliability is improved, and the advantages of a switch reluctance motor are effectively utilized. As input end voltages are far lower than output end series total voltages, voltage withstanding ofinternal devices is low, meanwhile, the switching frequency of all switching tubes is within a low-and-medium frequency range, and losses are low. The system is very suitable for converters of all switch reluctance generators, and especially is oriented to high-voltage loads or grid-connection requirements.

Description

technical field [0001] The invention relates to the field of power generation, in particular to a high-voltage self-enhanced excitation and high-voltage output converter system using a switched reluctance generator and a control method thereof. Background technique [0002] The structure of the switched reluctance motor is simple and strong, the manufacturing cost is low, there are no windings on the rotor, no permanent magnets, and the reliability is high; when used as a generator, one of the phase windings does not work without affecting the power output of the other phase windings, and the fault tolerance is strong ,with broadly application foreground. [0003] In recent years, DC transmission has been increasingly valued by the power sector. Local DC power grids have begun to take shape in some places. High-voltage, ultra-high voltage, and ultra-high voltage DC transmission and grid connection are also under development, and more and more have been derived from this. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P9/00H02P9/30H02P9/38
Inventor 孙冠群宋春伟郭倩
Owner CHINA JILIANG UNIV
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