A front-end integrated multi-port power converter for switched reluctance motor

Abstract

The invention discloses a front-end integrated multi-port power converter of a switched reluctance motor, which is suitable for the technical field of switched reluctance motor control. The converter is composed of a front-end integrated power supply circuit and multiple bridge arm units. The front-end integrated circuit consists of a battery pack, a photovoltaic panel power supply, 2 insulated gate bipolar transistors, an energy storage capacitor and 3 freewheeling diodes. Each bridge arm is composed of 2 insulated gate bipolar transistors and 2 freewheeling diodes, and the number of bridge arms is the same as the number of phases of the switched reluctance motor. The present invention does not require complex control strategies and has a simple structure; compared with traditional power converters, it realizes the combined power supply of photovoltaic panel power supply and battery pack, increases the voltage of the DC bus and flexibly charges the battery pack, and improves the utilization rate of electric energy; Multi-level excitation and demagnetization are realized when single-source power supply, which speeds up the process of excitation and demagnetization, and improves the overall efficiency of the system.

Description

technical field [0001] The invention relates to a switched reluctance motor front-end integrated multi-port power converter, which is especially suitable for use in the technical field of switched reluctance motor control. Background technique [0002] With the growth of the world's population and the rapid development of the modern social economy, the society's demand for energy is also increasing. Human beings are facing the problem of increasing energy demand and decreasing existing energy. Countries around the world are working hard to solve this contradiction. In recent years, governments and organizations around the world have vigorously promoted the development of renewable energy and improved the energy structure. On the other hand, by improving the efficiency and quality of energy production, transformation and consumption, they have eliminated excessive energy production capacity and increased effective utilization. . [0003] In the cost of the entire switched re...

AI Technical Summary

Problems solved by technology

The other uses a DC / DC converter to drive a switched reluctance motor to improve DC voltage and speed dynamic response, while the additional use of inductors and capacitors reduces power density

There is also an electric energy storage type power converter, due to the presence of non-isolated phases in the circuit, its fault tolerance is poor, and it cannot achieve the purpose of increasing the DC voltage

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