Multi-mode variable voltage switch reluctance generator converter system and its control method

Abstract

Multi-mode variable voltage switched reluctance generator converter system and its control method, the converter system is composed of three capacitors, ten diodes, ten switch tubes, three-phase windings, one battery, one inductor, the first capacitor side , battery, and the third capacitor side can be controlled as three power sources, and the phase windings can be used to form four power sources, without isolation and common ground. Through the control of ten switching tubes, the direct output of high power generation voltage can be solved at the same time. , wide-range continuous conversion of excitation voltage and strong excitation, variable power generation voltage, whether there is intercommunication between the three power sources, and when necessary, the battery, the first capacitor, and the phase winding tripartite output power are of great significance, which broadens the scope of the conversion system. Applicable aspects, high system utilization rate, strong flexibility, fault tolerance, adaptability, low cost, high benefit; suitable for various types of switched reluctance generator system applications driven by various powers.

Description

technical field [0001] The present invention relates to the field of switched reluctance motor systems, in particular to a highly adaptable and highly flexible switched reluctance with a composite structure and control method of three power supplies interoperable, multiple working modes and working states, variable excitation voltage and power generation voltage, and a control method Generator conversion system and its control method. Background technique [0002] The structure of the switched reluctance motor is extremely simple and firm, there is no winding on the rotor, the cost is low, and it has wide application prospects. [0003] During the operation of the switched reluctance generator, it is necessary to select the phase windings to be energized according to the relative positional relationship between the salient poles of the stator and rotor. The interior is subdivided into two stages of excitation and power generation. If necessary, the freewheeling stage can be...

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Problems solved by technology

[0010] In the field of switched reluctance generator systems, efficiency issues are always of great concern. In the operation of each phase winding of switched reluctance generators, avoiding entering the motor working condition to reduce efficiency is also a problem that needs to be studied, especially in the power generation stage in the traditional way. In the end, it is based on the fact that the inductance of the winding between the stator and the rotor reaches the lowest point, and the current can drop faster under the action of the reverse voltage because of the minimum flux linkage. However, it is very difficult to avoid that the rotor has entered the electric working area at this time, especially in the middle Switched reluctance generator at high speed operation, resulting in low power generation efficiency and damage to torque ripple

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