A Generalized And Simplified Transient Torque Analysis For Synchronous Motor Drive Trains.
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The start-up of synchronous motor drive trains is usually associated with torsionally excited vibrations and low-cycle fatigue problems. Traditional calculation methods used for analysis of such a system involve computerized integrations with very small time steps and many degrees of freedom. A simple method is presented herein which uses the knowledge of system natural frequencies and mode shapes and a general dimensionless integration data plot. A sample problem is included to demonstrate the application of the method. The results are compared with the more rigorous, traditional method to illustrate the accuracy of the simplified method. A procedure is also included to relate the dynamic torque to the torsional low-cycle fatigue limit, thus establishing a safe number of starts.
Chen, H. Ming; Mclaughlin, Donald W.; Malanoski, Stanley B. (1983). A Generalized And Simplified Transient Torque Analysis For Synchronous Motor Drive Trains.. Texas A&M University. Turbomachinery Laboratories. Available electronically from