Starting Pulse Vibration Torque Analysis of Aviation Variable Frequency Asynchronous Motor Based on Low-Frequency Step-Down Starting Methods

Zheng Cao, Yuanjun Zhou and Na Wang
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Zheng Cao: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
Yuanjun Zhou: School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
Na Wang: Engineering Training Center, Beihang University, Beijing 100191, China

Energies, 2020, vol. 13, issue 6, 1-18

Abstract: The more electric aircraft provides 115 V/360~800 Hz variable frequency power supply for the variable frequency asynchronous motor, and the motor operation characteristics change with the power frequency variation. It causes the starting pulse vibration torque with the low-frequency power supply (360 Hz) to increase greatly and the mechanical shock and fatigue damage. Therefore, this paper proposes step-down starting method with the low-frequency power supply. Based on the electromagnetic principles generated by the starting pulse vibration torque, this paper uses a novel method of simulation data fitting to establish an approximate model of the starting pulse vibration torque. The parameter design formulas of the low-frequency step-down starting methods, including the reducing voltage, the series resistance, and the series inductance are proposed. The effectiveness of the different methods are verified, and the performance is compared through the simulation. The experimental verification of a small power asynchronous motor is completed. The simulation and experiment results show that the low-frequency step-down starting methods effectively reduce the starting peak torque, and also suppress the shock impact of starting current on the power supply.

Keywords: more electric aircraft; aviation variable frequency motor; aviation variable frequency power supply; starting pulse vibration torque; step-down starting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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