A method for controlling an aircraft starter motor

Abstract

The present application belongs to the technical field related to aircraft, and in particular relates to a method for controlling an aircraft starter motor, which includes the following steps: S1. In the starting mode, firstly, the coordinates of the current need to be changed. The current waveform in the natural coordinate system is converted into a synchronous rotating shaft. At this time, the measured value is compared with the reference value and can be adjusted without error through the PI controller. S2, SG transition control includes controlling ground power supply connection and disconnection, switching of closed-loop control strategy, connection and disconnection of equipment load switch. S3. In the power generation mode, the maximum DC voltage output by the SG is limited by the bus voltage. The present invention provides a complete set of control strategies for the integrated motor of the aircraft engine, which can not only ensure that the SG provides sufficient kinetic energy when the aircraft engine starts, but also ensure the safety of the transition transition, and smoothly switch to the power generation mode, providing the whole aircraft with High-quality electric energy provides technical support for the application of starter-generator integrated motors in multi-electric aircraft and all-electric aircraft.

Description

technical field [0001] The present application belongs to the technical field related to aircraft, and in particular relates to a method for controlling an aircraft starter motor. Background technique [0002] In order to meet the increasing demand of electric load, reduce aircraft emissions, improve fuel economy, reduce the total system cost, and adapt to the development of aerospace industry, the concept of More Electronic Aircraft (MEA) has been proposed at home and abroad. The starter-generator system (starter-generator, SG) is one of the key subsystems of the MEA. In the starting mode, the SG can be used to start the engine or the auxiliary power unit. In the generating mode, the SG operates as a generator to provide electrical energy for the whole machine. In the past ten years, the continuous increase in the capacity of power generation subsystems and power conversion electronic equipment has provided conditions for the electric starting of engines. [0003] As an in...

AI Technical Summary

Problems solved by technology

The aircraft environment has a more complex electromagnetic environment and harsher working conditions than ground vehicles, and it is impossible to directly learn from the research results of the starter motor in the automotive field

At present, there are many researches on the structure, materials and semiconductor devices of SG motors in the aviation field at home and abroad, but there is no research on the strategy of starting, transition conversion and power generation control of the whole aircraft.

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