ICSGCE Keynote Speakers

  Prof. Axel SikoraT

Prof. Yun Seng Lim (Senior Member of IEEE)
Universiti Tunku Abdul Rahman, Malaysia

Biography of Prof. Yun Seng Lim is available at http://www.icsgce.com/?person/24

Keynote Talk:  Multifunctional Grid-Integrated Energy Storage as an Innovative Solution to Supply Electricity Cheaply, Effectively and Reliably under Renewable Energy and Flexible Loads  

[Abstract] The Malaysian government has launched a number of initiatives to encourage the utilisation of renewable energy in order to reduce greenhouse gas emission in addressing climate change issues. Photovoltaic system is the most encouraging renewable energy source in Malaysia because of the large amount of sunlight throughout the year. However, a large number of PV systems can cause power quality issues such as voltage rise, voltage unbalance, unnecessary neutral current circulation and reverse power flow, efficiency of electric network and customers’ equipment. Therefore, funded by the Ministry of Energy, Green Technology and Water (KeTTHA), the characteristics, such as severity, types and the frequency of voltage issues, were studied experimentally to address the above issues, and a novel fuzzy controlled energy storage system is developed and verified experimentally. With this solution, the amount of the PV systems can be doubled on the distribution networks. The amount of greenhouse gas emission can be further reduced. On the other hand, for the study of reducing the peak demands of industrial and commercial customers, a 400 kW and 780 kWh energy storage system has been constructed and connected to 11 kV network via a 500 kVA transformer at the campus. The energy storage system is used to supply power to the building during peak hours and then charge the batteries during off peak hours. This research project is financially supported by KeTTHA as well as Newton Fund from the British Council.   



Prof. Nasrudin Bin Abd Rahim (Senior Member of IEEE)  
University of Malaya, Malaysia

Biography of Prof. Nasrudin Bin Abd Rahim is available at http://www.icsgce.com/?person/51  

Keynote Talk: The Use of Power Electronics in Harvesting Solar Energy — Malaysia  

[Abstract] Photovoltaic (PV) is a technology that converts solar energy into electricity, and its market growth synchronized with the development of inverter technology. PV panels are so reliable that most manufacturers give a 10-year warranty and a life expectancy beyond 20 years. Harvesting solar power requires getting the energy where and when it is available. The inverter is the heart of a grid-connected PV system. Essentially, an inverter converts DC energy produced by a PV array into AC energy required by the grid. A well-designed PV system will operate unattended and requires minimum periodic maintenance. Over the last decade, PV inverter technology has evolved rapidly, in line with the general development of the PV sector, with PV prices dropping to 50% of the original, and efficiency and reliability increases. Through advancements in Power Electronics research, the economics related to PV usage in solving issues of alternative energy is hoped to contribute to the PV’s continued use. This presentation aims to provide an overview of the recent PV inverter topologies. Several relevant transformerless PV inverters, with different converter structures and modulation techniques, are evaluated. The operation principle of the inverter topologies and leakage current reduction method are briefly investigated. Addition to that, this presentation will also cover solar PV activities such as policies, research, and development in Malaysia.     


Prof. Desineni Naidu (Life Fellow of IEEE)
University of Minnesota Duluth, USA

Biography of Prof. Desineni Naidu is available at http://www.icsgce.com/?person/52

Keynote Talk: Advanced Control Strategies for Smart Grid and Clean Energy 

[Abstract] An overview of recent research on advanced control strategies for systems arising in Smart Grid and Clean Energy is presented. The control techniques employed are Singular Perturbations and Time Scales (SPaTS) and State-Dependent Riccati Equations (SDREs). The SPaTS, having some distinct properties of slow and fast time scales, boundary layers, numerical stiffness, etc., focuses on the analysis of decoupling of high-order dynamical systems into slow and fast optimal subsystems and the synthesis (design) of optimal controllers for slow and fast subsystems. The SDRE technique, for infinite- and finite-horizon nonlinear deterministic and stochastic regulation and tracking systems, is based on change of variables that converts the nonlinear differential Riccati equation (DRE) to a linear Lyapunov differential equation (LDE). Nonlinear optimal regulation leads to state dependent (SD) differential Riccati equation (DRE) or algebraic Riccati equation (ARE), whereas nonlinear optimal tracking leads to the SD-DRE, a state dependent (SD) vector differential equation (VDE). The techniques are illustrated with application to clean energy such as harnessing wind.


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