Small power multifunctional three-phase switched reluctance motor system and its control method

Abstract

The invention relates to a low-power multifunctional three-phase switched reluctance motor system and a control method thereof. The system is composed of a winding circuit, an excitation circuit, a power supply circuit, a variable current circuit, an isolation and inversion circuit, a rectifying circuit and a charging circuit, and is characterized in that the winding circuit is simple in structure and can realize a follow current function, the excitation circuit can realize dual functions of strong excitation and quick demagnetization, a power supply required by power generation and electric operating conditions can realize self charging, the variable current circuit can realize regulation for power generation current, conditions are created for MPPT (Maximum Power Point Tracking) control, the whole system can also realize AC-DC multi-power output under support of the control method and has application values in areas to which a power grid does not reach.

Description

technical field [0001] The invention relates to the field of switched reluctance motors, in particular to a low-power, high-performance switched reluctance switch reluctance that can realize the working conditions of generators and motors, can output a variety of electric energy for power generation, and has flexible and multi-controllable parameters. Motor system and control method thereof. Background technique [0002] Considering the multi-power supply required by islands, ships, remote field communication facilities and engineering construction sites without grid access, as well as occasional electric power, and such areas are often rich in wind energy resources; traditional diesel generators are often used The power provided is single and requires fuel, but the electrical equipment is often diversified, AC and DC are different, and the needs of different voltage levels are required. Providing power while utilizing wind energy, an abundant renewable resource in such are...

AI Technical Summary

Problems solved by technology

[0004] Switched reluctance generators are generally divided into two stages of excitation and power generation during operation. The main circuit structure of the traditional asymmetrical half-bridge power converter, that is, the winding circuit structure, can often add a freewheeling stage between the two stages. , the no-voltage freewheeling stage can make the winding current grow rapidly in a short period of time, which is conducive to the improvement of power generation capacity. Several relatively asymmetric half-bridge structures proposed by the industry, although the structure is simplified and the cost is reduced, etc., However, it is often impossible to achieve the continuous flow stage

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