Three-stage brushless synchronous motor reluctance start control method and system

Abstract

The invention discloses a three-stage brushless synchronous motor reluctance type starting control method and system. When the starting power generation system is started, the three-phase alternating current is supplied to the three-phase armature winding of the main generator through the starting controller, and no starting excitation is provided. The current can only rely on the reluctance torque to realize the starting function; the starter controller feeds AC power to the armature winding of the main generator during the starting stage of the starter power generation system, and the main motor will generate a reluctance torque due to the salient pole structure of the rotor, and through the reluctance The torque realizes the starting function of the system. This starting control method only needs a set of three-phase inverters to realize the starting function, which simplifies the starting control method and reduces the complexity of the whole system.

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

Images