Energy optimization of public service escalators

Kiang Chung Chau Nefield, Siu Lau Ho

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

This paper is to present the results on the new application of variable speed drive using the in-situ data measured by in-fibre fibre Bragg grating (FBG) sensor for energy optimization of an escalator. It also reports the promising potential of this technique for future development of public service escalators. This paper consists of two parts. The first part reviews the existing energy efficient technologies for escalator operation including auto two speed operation, auto on/off operation, and the variable torque operation in which the motor voltage is controlled in order to provide a minimal driving torque when there passenger load on the escalator is light. This operation mode improves the power factor of the motor while maintaining constant speed operation. The second part of the paper presents the proposed new variable speed operation in that the speed of an escalator is adjusted in response to varying escalator loading demand. This operation mode is designed based on the operational characteristics of railway system in which the trains headway and hence the escalator passenger flow is different at different times of a day.
Original languageEnglish
Title of host publication9th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2012
PublisherInstitution of Engineering and Technology
Volume2012
Edition616 CP
ISBN (Print)9781849197434
DOIs
Publication statusPublished - 1 Jan 2012
Event9th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2012 - Hong Kong, Hong Kong
Duration: 18 Nov 201221 Nov 2012

Conference

Conference9th IET International Conference on Advances in Power System Control, Operation and Management, APSCOM 2012
CountryHong Kong
CityHong Kong
Period18/11/1221/11/12

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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