A Double-fed Switched Reluctance Generator Converter System for Direct Boost Continuous Power Generation

Abstract

A doubly-fed switched reluctance generator converter system for direct-boost continuous power generation, consisting of a set of batteries, ten switching tubes, seven diodes, three-phase windings, six capacitors, an isolated doubly-fed converter, and an inductor , in the excitation of each phase winding and the working conversion circuit of power generation, combined with the relative position information of the stator and rotor of the switched reluctance generator, through the low-frequency switching control of the first to sixth switching tubes, the excitation is strengthened and the power generation voltage is directly raised. At the same time, it solves the problem that the electric energy cannot be provided through the input side in the excitation stage, realizes the continuous output electric energy in the two stages of excitation and power generation, improves the quality of power generation and the performance of the generator, and the automatic charging and current conversion circuit of the separately excited battery, when necessary It can work in reverse energy feedback, which improves the adaptability and power generation efficiency of the system. The structure and control of the whole system are simple, low switching voltage, high efficiency and low cost; it is suitable for applications in the field of high-speed switched reluctance generator systems driven by various powers .

Description

technical field [0001] The invention relates to the field of switched reluctance motor systems, in particular to a switched reluctance power generation with a structure and control that directly raises the voltage, automatically charges the output of continuous power generation and feeds back energy, has simple control, high efficiency, high power quality, and low switching voltage Machine converter system and its control method. Background technique [0002] Switched reluctance motor is more and more valued by the industry because of its simple and firm structure, convenient heat dissipation, and strong fault tolerance. However, its inverter system is greatly different from the inverter device of traditional motors. Flow system research and development has become the key. [0003] Different from traditional synchronous generators, DC generators, asynchronous generators, etc., switched reluctance generators are more special. Its work needs to combine the salient pole positi...

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Problems solved by technology

[0006] In the field of switched reluctance generator conversion system, the excitation is divided into two modes: self-excitation and separate excitation. They each have their own advantages and disadvantages. The external excitation mode has stable excitation power supply and no interference to the power generation end. The self-excitation mode has a high level of intelligence. , the maintenance workload is less, but the traditional self-excitation is not conducive to the improvement of the power quality of the output side of the power generation, and the battery-powered excitation structure with self-charging capability has important development prospects, because it uses the respective advantages of the self-excitation and self-excitation modes In addition, referring to the countermeasures for the extreme problems faced by the doubly-fed asynchronous power generation system in the wind power field, if the existing storage battery with electric energy in the switched reluctance generator converter system can be used to feed back power supply when necessary to realize doubly-fed power for the whole transformer Of course, if the existing battery forward charging system can be used to realize the reverse energy feedback work, it will further simplify the structure of the system and reduce the cost, which is of great significance

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