Transient modes of high-speed rotor whit electric drive

Venelin Stoyanov Jivkov

doi:10.30574/gjeta.2022.13.3.0151

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Transient modes of high-speed rotor whit electric drive

Venelin Stoyanov Jivkov ^*

Department of Mechanisms and Machines Theory, Faculty of Industrial Technology, Technical University, Sofia.

Research Article

Global Journal of Engineering and Technology Advances, 2022, 13(03), 008–021.

Article DOI: 10.30574/gjeta.2022.13.3.0151

DOI url: https://doi.org/10.30574/gjeta.2022.13.3.0151

Publication history

Received on 20 August 2022; revised on 29 September 2022; accepted on 02 October 2022

Abstract

The paper presents the results of the study of the transient modes of a high-speed rotor with formally six degree of freedom, driven by an electric motor-generator during transition trough the resonance.

Based on the Newton-Euler equation, the differential equations of motion are derived, and the frequency spectrum of the considered electro-mechanical system is determined.

The following cases are considered: - transition trough resonance with unlimited (ideal energy source) and limited excitation by the motor; unstable frequency zones; phase trajectories and the influence of the electro-magnetic constant of the motor on the stability. The analysis of the stationary and nonstationary processes was carried out using the asymptotic method of Bogoliybov-Mitropolski. The stability of vibrations are determined by numerical solution of the equations in variations of the equilibrium states.

These transitions are of great importance for the recently widespread so-called uninterruptible power sources (UP), as well as the kinetic energy recovery system (KERS ) used as additional propulsion energy .

Keywords

Rotor systems; Transient modes; Limited and Unlimited Excitation; Stability of Vibration

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How to cite this article

Venelin Stoyanov Jivkov. Transient modes of high-speed rotor whit electric drive. Global Journal of Engineering and Technology Advances, 2022, 13(3), 008-021. Article DOI: https://doi.org/10.30574/gjeta.2022.13.3.0151

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