Consider new developments for variable-speed electric motors

Copying and distributing are prohibited without permission of the publisher

08.01.2012 | Almasi, A., WorleyParsons Services, Brisbane, Australia

New challenges, recent developments, the latest mechanical issues and main reliability factors for large variable-speed electric motor drivers in HPI plants are presented here.

Keywords: [motor] [electric motor] [drive] [synchronous motor]

The major oil, gas and petrochemical operators use variable-speed electric motor drivers to drive process compressor trains, as shown in Fig. 1. A large electric synchronous motor is used for high-power applications. Because of the total shaft-line length of these large electric motors, dynamic issues and lateral vibrations are difficult problems. Resonance must be eliminated, and the lateral and dynamic exciting forces generated by the electric motor should also be minimized.


Fig. 1. Example of a large variable-speed electric motor.

To continue reading please, log in to hydrocarbonprocessing.com.

Subscribe now for premium access and unlimited access to the site, including archived articles and the process handbooks. Start a free trial to gain access to articles from the current issue of Hydrocarbon Processing.

Already have an account?

Subscribe today and gain unlimited and immediate access to the site. Plus, you'll receive the next 12 issues of the magazine in your choice of print or digital format. Start your subscription today.