Prof. Lim Yun Seng
Universiti Tunku Abdul Rahman, Malaysia
Professor Ir. Dr. Lim Yun Seng (BEng (Hons), PhD (UK), CEng, PE(PC), MIET, SMIEEE, MIEM, FAAET), has successfully developed the first utility scale, self-intelligent energy storage system (ESS) of 400kVA and 677kWh on the power grid in Malaysia using patented controllers to reduce maximum power demands for customers and utilities. With the system, utilities like TNB avoid adding new power plants and/or upgrading power networks, resulting in greenhouse emissions reduction and brings down the price of electricity which is essential to a developing country. The system also reduces commercial end-user electricity bills by reducing maximum demand charges. He has also developed another novel ESS that promotes renewable energy sources to mitigate climate change issues. Prof Lim is the founder and director of IoT Energy S/B that designs ESS projects for utilities such as TNB and Sarawak Electricity Board (SEB). Prof Lim has published 62 journal papers, where 15 journals are ranked in the top 5% in Clarivate Analysis and 30 conference papers with 1273 citations at h- index of 20 and 16 in Google Scholar and Scopus, respectively. He obtained RM6.3 million in research funding, consultancy projects with worth of RM65,000 and holds 3 granted patents (Malaysia and China) and 5 pending patents (3 in Malaysia and 2 in Indonesia). Prof Lim has successfully graduated 5 PhD and 14 Master students. He is the lead author for the Intergovernmental Panel on Climate Change Sixth Assessment Report (IPCC, United Nations) that assesses mitigation and solutions to the threat of climate changes. Prof Lim won 25 international and national awards such as Energy Globe Award 2010, Gold Medal in 2013 ITEX, UTAR Best Invention of the year 2013, National Outstanding Innovator Award in 2017 by Private Education Co-operative of Malaysia and 2018 Top Research Scientist Malaysia by Academy of Sciences Malaysia.
Speech Title: Whole Approach Benefits of Energy Storage System on Power Grid
Assoc. Prof. Mohd Shakir Md Saat
Universiti Teknikal Malaysia Melaka (UTeM), Malaysia
Dr. Mohd Shakir Md Saat interests controller synthesis of polynomial control system. Also in wireless power transfer technologies especially in Capacitive Power Transfer system. Has published more than 80 journals and refereed conference proceedings. Has published 1 book on Polynomial Discrete-Time System (Publisher: Springer). Reviewer to many reputable journals such as IEEE Transaction, Sensors, Energies, COMPEL, and many others.
Speech Title: Controller Design for Polynomial Discrete-time System
Abstract: The polynomial system is known to be a popular system as many nonlinear systems exist in the form of polynomial. Its popularity is also driven due to the ability to approximate the nonlinear system accordingly. However, the main problem of designing controllers for polynomial system is the problem always appear to be nonconvex and therefore it is not possible to be solved. The problem becomes worse when one dealing with polynomial discrete-time system (PDTS). The existing results suggested a few solutions, i. e to force the Lyapunov function to be in a certain form. This leads the results to be conservative. To overcome the problem, in this work we propose a convex solution to the problem by introducing an integrator to our controller. By having this, we can relax the problem and formulate the problem by using SOS Decomposition approach. The problem can then be solved using any SDP solver. Our proposed solution the is validated through numerical examples.
Assoc. Prof. Hidayat Bin Zainuddin
Universiti Teknikal Malaysia Melaka (UTeM), Malaysia
Hidayat Zainuddin received his Bachelor's degree in Electrical Engineering from Universiti Teknologi Malaysia in 2003. He then obtained his Master of Science degree in Electrical Power Engineering with Business from University of Strathclyde, Glasgow, in 2005. He received his Ph.D. degree from University of Southampton in 2013. He has received almost RM 500,000 research grants as a principal investigator and almost RM 1.5 million as a co-researcher. Most of his research mainly towards the sustainability of electrical power system which are associated with green technology, condition monitoring and failure analysis for high voltage transformers. These include investigating the surface discharge behaviour on pressboard impregnated in mineral and ester oils, performance of mineral-ester oil mixture for transformer applications and design and development of optical fiber sensor for online monitoring of transformer oil for smart grid application. He has authored and co-authored more than 50 technical papers comprising journals and conference proceedings. He also has contributed in reviewing articles for many conferences and journals published by IEEE, IET, Elsevier and others.
Speech Title: Ester-based oil as alternative insulating fluids for oil-filled transformer applications
Abstract: For many years, hydrocarbon-based fluids (i.e. mineral oil) have been successfully fulfilled the oil-filled transformer requirements, to serve dual purposes, i.e. as a coolant and an insulator. Nevertheless, nowadays, there are increasing concerns on its limitations from environmentally friendly point of view and to extend the lifespan of the transformers. The emergence of ester-based fluids (i.e. natural and synthetic ester oils) as alternative for oil-filled transformers has gained much attention from energy industries. Their advantages such as biodegradable, high moisture tolerant, less flammable and comparable dielectric strength with mineral oil offer great opportunity for utilities to improve grid reliability, fire safety, reduce environmental impact and gain cost efficiencies. The presentation will discuss the properties and benefits of ester-based fluids in comparison to mineral oil. Some highlights of our research works related to ester oil for high voltage transformer applications will also be shared during the session.