Switch magnetic resistance generator system capable of realizing rapid excitation/demagnetization

Abstract

The invention discloses a switch magnetic resistance generator system capable of realizing rapid excitation / demagnetization. The system comprises a switch magnetic resistance motor body, a prime mover, a position sensor, a power converter, a DC power supply and a controller, wherein the power converter is a four-level power converter. By adopting the four-level power converter, at an excitation stage, in an angle position control mode, the exciter current of a phase winding is increased, and the energy storage of a magnetic field is increased so that the output power of an overall power generation system is improved and it is easier for the power generation system to reach a rated power; in an current chopping control mode, the excitation time is reduced, rapid excitation is realized, and the time of a generating stage is increased so that the generating capacity of a motor is enhanced and the output power of the system is increased; and at the generating system, when two voltage sources are utilized, rapid demagnetization can be realized.

Description

Technical field [0001] The invention belongs to the technical field of drive control of a switched reluctance generator and power converter design, and in particular relates to a switched reluctance generator system that realizes rapid excitation / demagnetization. Background technique [0002] Switched reluctance motor is a new type of speed control motor developed by combining power electronic technology, digital control technology and traditional reluctance motor. It has simple structure, sturdiness, low cost, reliable work, flexible control, and operating efficiency. High, low starting torque, strong fault tolerance. When the switched reluctance motor is operated as a generator, it has good regulation performance, can operate stably in a wide speed range, output constant direct current, and adapt to different load requirements; due to the simple structure of the switched reluctance motor, the rotor rotates With small inertia and low starting torque, it can be made into a high-...

AI Technical Summary

Problems solved by technology

In the asymmetrical half-bridge power converter, the voltage values ​​in the excitation phase and the power generation phase are the same, and cannot be independently adjusted, which is not conducive to the control of the switched reluctance generator and effective power generation, resulting in low motor speed. The output power is low and cannot reach the rated power of the motor

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