Institution of Mechanical Engineers IMechE

Webinar A brief review on state of the art technologies in elevator systems

01 July 2013

Dr Albert So always dares to claim that among all building services systems, elevator systems may be the most advanced in terms of technology. Variable voltage and variable frequency drives have already been popularly used since the late 80s of the last century. Control algorithms involving artificial intelligence, such as fuzzy logic, artificial neural networks and genetic algorithms etc. have been employed for car dispatching since the mid 90s of the last century.

In this presentation, Dr So will review some of the latest technological developments in elevator engineering, in two aspects, namely energy performance and safety, which are more mechanical engineering related.

Drives is the major energy consumer within an elevator system. To save energy directly, R&D on drives has been continuously conducted for some half a century. Different drives, like AC2, DCWL, ACVV, DCTL, ACVVVF, PMSM, RM and LM etc. will be highlighted. Aerodynamic design has an impact on energy performance, in particular, when the speed of modern lifts keeps on breaking world’s record. To save energy indirectly, intelligent car dispatching is one approach, which is also associated with traffic performance. A traffic performance based energy consumption indicator was developed by the presenter.

For safety, various issues will be discussed. Braking is of course the main concern, followed by hoisting rope operation. The latter has recently become a critical issue when super-high-speed elevators are serving ultra-high-rise buildings. Remote monitoring of elevator systems is gradually drawing users attention so that manufacturers, maintenance contractors and owners can all keep an eye on the safe operation of the installations. The presenter has assisted ASHRAE to develop a set of open protocols for lift and escalator systems.

Dr Albert So, CEng, FIMechE, School of Science and Technology, The University of Northampton

Dr Albert So obtained BSc(Eng), MPhil and PhD, all in electrical and electronic engineering from The University of Hong Kong. He has been the Scientific Advisor and an Executive Board Member of International Association of Elevator Engineers (IAEE), and the General and Academic Secretary of IAEE (HK-China Branch) for almost twenty years. He led a working group to draft the Building Energy Code for lifts and escalators for the HK Government. Now, he is a Visiting Professor of The University of Northampton to carry out research works on different areas within the elevator industry. Dr. So is a Chartered Engineer, a Registered Professional Engineer in Hong Kong, a fellow member of IMechE, CIBSE and SOE and a senior member of IEEE and Chinese Mechanical Engineering Society.

Clips:

Webinar Elevator Systems

: Dr Albert So, CEng, FIMechE, School of Science and Technology, The University of Northampton
Dr Albert So obtained BSc(Eng), MPhil and PhD, all in electrical and electronic engineering from The University of Hong Kong. He has been the Scientific Advisor and an Executive Board Member of International Association of Elevator Engineers (IAEE), and the General and Academic Secretary of IAEE (HK-China Branch) for almost twenty years. He led a working group to draft the Building Energy Code for lifts and escalators for the HK Government. Now, he is a Visiting Professor of The University of Northampton to carry out research works on different areas within the elevator industry. Dr. So is a Chartered Engineer, a Registered Professional Engineer in Hong Kong, a fellow member of IMechE, CIBSE and SOE and a senior member of IEEE and Chinese Mechanical Engineering Society.

Duration: 1 Hour