Three-stage brushless synchronous motor reluctance type starting control method and system

Abstract

The invention discloses a three-stage brushless synchronous motor reluctance type starting control method and system. A three-phase alternating current is fed into a three-phase armature winding of amain generator through a starting controller when a starting power generation system is started; a starting excitation current is not provided, and the starting function is achieved only by means of magnetic resistance torque; the starting controller supplies alternating current to the armature winding of the main generator in the starting stage of the starting power generation system; the main motor is of a rotor salient pole structure, and magnetic resistance torque is generated, so that the starting function of the system is achieved through the magnetic resistance torque. According to thestarting control method, only one set of three-phase inverter is needed, so that the starting function can be realized, the starting control method is simplified, and the complexity degree of the whole system is lowered.

Description

technical field [0001] The invention relates to an aviation starting and generating system, in particular to a starting method of a three-stage brushless synchronous starting and generating system, including system structure and starting principle, and belongs to the technical field of aviation motors. Background technique [0002] At present, most aircraft AC power systems use a three-stage brushless synchronous motor as a generator, and the engine is started by a DC starter, an air turbine starter or a gas turbine starter. However, such a starting system has a large volume and weight and low reliability. A simple and feasible way to realize the integration of starting and power generation is to directly omit the special starter on the basis of the existing power supply system, and run the three-stage brushless synchronous generator in the electric state according to the principle of reversibility of the motor. to start the engine. [0003] However, when the three-stage b...

AI Technical Summary

Problems solved by technology

This scheme sets two sets of power converters to improve the utilization rate of the excitation winding, but the two sets of power converters make the excitation control process more cumbersome and increase the complexity of the system structure

[0005] The existing three-stage brushless synchronous motor starting control methods all require starting excitation control. At the same time, in order to obtain sufficient excitation current at zero speed and low speed, the starting excitation control methods used are quite complicated, and the main excitation needs to be adjusted. Machine structure, a large number of power devices are added, and the switching process of starting and generating is complicated

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