Dynamic interaction behavior of an electric motor drive multistage gear set

For the better design and monitoring of gearboxes operating under nonstationary conditions, the dynamic interaction behavior of an electric motor drive multistage gear set is investigated in this study. Initially, dynamic mathematical models of an asynchronous motor and a multistage gear set are est...

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Bibliographic Details
Published in:IEEE access 2020-01, Vol.8, p.1-1
Main Authors: Yi, Yuanyuan, Tan, Xin, Xuan, Liang, Liu, Changzhao
Format: Article
Language:English
Subjects:
Asynchronous motors
Dynamic characteristics
Dynamic load propagation
Dynamic loads
Electric currents
Electric motors
Electromechanical interaction
Equivalent circuits
Gearboxes
Gears
Impact analysis
Induction motors
Load
Load fluctuation
Load modeling
Mathematical model
Mathematical models
Monitoring
Motor current signature
Multistage gears
Nonstationary operating conditions
Synchronous motors
Transient response
Vibration analysis
Vibrations
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Summary:For the better design and monitoring of gearboxes operating under nonstationary conditions, the dynamic interaction behavior of an electric motor drive multistage gear set is investigated in this study. Initially, dynamic mathematical models of an asynchronous motor and a multistage gear set are established by using the equivalent circuit method and the lumped parameter method, respectively. An electromechanical model coupling the asynchronous motor and the gearbox is subsequently developed, which is suitable for nonstationary conditions. The system transient responses under an impact external load are analyzed, and the mechanical torsional-vibration and electric current response are compared. Finally, the dynamic load propagation mechanism and the interaction effect on different gears are examined. The results demonstrate that the vibration frequencies of the multistage gearbox in steady and transient states both can be captured in the current. Electric current can be applied to reflect the external load variation and the internal vibration status of the driven gearbox under stationary or nonstationary conditions. The mutual excitation effects between adjacent gear pairs change the respective dynamic characteristics of the gears, and gears with small nominal loads are susceptible.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.2985665