What is it about?
"Linear permanent magnet synchronous machine" is most likely the only technology available today to drive a ropeless elevator. It is safe because of its good transient response to control and its emergency operation during a genuine power failure. Linear permanent magnet synchronous machines have recently been applied to the elevator system to facilitate the implementation of the concept of multi-independent-car-per-hoistway and 2-dimensional operation. Based on simulation upon a simplified machine model, this paper studies the performance of an elevator car under a full load upward journey and analytically estimates the free falling terminal speed under emergency.
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Why is it important?
This application will be the future of the elevator industry as buildings are getting taller and wider.
Perspectives
This study was based on a simplified model without the consideration of any imperfection. A more detailed and in-depth study using a more realistic model has been published in a later edition of the same journal.
Albert So
Read the Original
This page is a summary of: A study of linear PMSM driven ropeless elevators, Building Services Engineering Research and Technology, September 2018, SAGE Publications,
DOI: 10.1177/0143624418797604.
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