Salish Maharjan Successfully Defended his Ph.D.
Friday | 15 May 2020
Congratulation to Salish for successfully passing his Ph.D. oral defence. His dissertation is titled "analysis and predictive control of power distribution system with high penetration of PV resources." This research provides innovative solutions to enhance the voltage regulation within power distribution systems in the presence of intermittent renewable generations. As a result, the stability of the power grids is maintained, or improved in some cases. His research is supervised by Dr. Ashwin Khambadkone and Dr. Jimmy Peng.
Colm O'Rourke Successfully Defended his Ph.D. at MIT
Monday | 11 May 2020
Congratulation to Colm for successfully completing his Ph.D. oral defence. His dissertation is titled "decentralized power systems: reference-frame theory and stability region generation." This research provides theoretical insights to analyze power quality issues in renewable generations, and innovative solutions to enhance the control stability of inverter-based systems in electric grids. These contributions provide the necessary foundations to transform the conventional power grids into a decentralised framework dominated by renewable generations. His research is supervised by Dr. James Kirtley at MIT and Dr. Jimmy Peng at NUS.
Opinion Letter in Today Newspaper
Wednesday | 06 May 2020
We are becoming accustomed to the cyber domain, socialising with our families and friends by posting stories and photos on social media as well as sharing interesting articles from the Web. But to an adversary, our innocent action of forwarding a post may be weaponised to disrupt societal integrity. Specifically, the surge in disinformation regarding Covid-19 is concerning.
The full letter can be viewed here.
Cover Forum Letter in Straits Times Newspaper
Saturday | 07 March 2020
Similar to the recent US democratic presidential candidates’ debate on climate change (19 Feb), Singaporean government is currently debating about our climate change budget for the next fiscal year. There are many engineering challenges in renewable integration, especially in controlling power inverters. Unfortunately, the general public is mostly unaware of these issues, and many believe the taxpayers’ dollars should be better spent on pressing matters, i.e. resolving the economic slowdown.
This letter was the cover article in the printed newspaper. The electronic version can be found here.
Best Paper Award at IEEE Conference
Wednesday | 27 November 2019
Our paper "A GaN-based High Step-Up Half-Bridge Resonant Converter for Interfacing PV modules to DC Data Centers" won the best paper award at the 2019 IEEE International Future Energy Electronics Conference, Singapore.
This work presents a comprehensive design of a half-bridge resonant converter for achieving soft-switching over a range of input and load conditions. The paper also presents a novel model for the dead-time behavior of the circuit, so as to achieve valley switching for any input voltage.
From Left: Jimmy Peng, and Gurupraanesh Raman
Won Several Awards at iGEM Competition 2019
Monday | 4 November 2019
This year, our iGEM team showcased their project, E.co LIVE, at the annual iGEM Giant Jamboree in Boston USA. iGEM is the world largest annual synthetic biology student competition, with over 340 teams participating from universities around the world. Apart from winning Gold mdeal, we won two special awards – Best Foundational Advance Project and Best Part Collection Awards. Furthermore, we were nominated for the Best Poster, Presentation, Wiki, Basic Part, Composite Part and Finalist awards. Our students have again surpass the results of the prevous year. Their achievements were also recognized by the Faculty of Engineering.
Summary of the results can be found at the iGEM website.
NUS iGEM Team, 31 October 2019
Cover Forum Letter in Straits Times Newspaper
Friday | 22 February 2019
Singapore is currently rolling out an open electricity market. With many different pricing plans and gossips, choosing the right pricing plan has became ever more difficult for consumers. This article provides a simple and clear explanation to how retail electricity market works, and how consumers should game it. It was selected as the cover article in the Forum section. The link can be found here.
This letter was ranked Week's Top Letter #1 by the forum editor.
Presentation on Future Distribution Systems at MIT
Tuesday | 24 October 2018
Our group presented the ongoing research on microgrid stability and consumer behavioral modeling to Professor Kirtley's group and Professor Stuart Madnick.
Awarded NRF Systemic Risk and Resilience Planning Grant
Monday | 1 October 2018
We have been awarded $150,000 by the National Research Foundation (NRF) for a duration of one year. The research is entitled, "grid-customer integrated resilience assessment and enhancement for modern power systems."
A liberalized electric industry is a paradigm shift from utility-centric towards a customer-oriented environment. In such a scenario, demand-side parameters, including weather and customer behavior become non-electrical external influences that are coupled to the grid performance. The reliability of the power grid is therefore subject to not only the technical characteristics of installed devices, but also unconventional consumption patterns of the electricity consumers. Just as considerable amounts of power generation from rooftop solar plants risk the system stability, our preliminary consumer behavioral models predict that manipulating their behaviors would have significant detrimental effect on the system. However, at present, most researchers discount the effects of consumer behavior on the grid reliability.
Meanwhile, the concern of manipulating individual behavior through planned cyber-attacks is growing since the latest US election and the related Facebook scandal. We therefore ask the question of whether the grid stability and resilience could be influenced by a malicious entity attacking customer-driven services like demand response. Demand response is the shift of electricity consumption in response to financial incentives. To assess the impact of manipulating electricity consumption on the residential grid, we propose a high-resolution bottom-up behavioral model for the consumers' response to a demand response event. This model must be scalable, and comprehensively incorporate the response of participants to such factors as the monetary compensation offered by the utility, and their enthusiasm to participate in such programs. This planning grant would enable us to design and implement surveys to generate data that assist us to populate our consumer behavioral model. We would then be equipped to quantify the impact of an attack on a real-world distribution system, and propose to the utility countermeasures to prevent, detect and mitigate such attacks.
Visit from Association of Chartered Engineers of Iceland
Tuesday | 25 September 2018
It was a pleasure to host power engineers from Iceland. Due to the geographical and demographical diversity, the challenges we faced in Singapore are significantly different to those in Iceland. The sharing of research and industrial experience was inspiring during the presentation and lab tour. However, the agenda on security and resilience is common among the two nations. Our research on integration of consumer behavioral into power system operation was well-received. After the hacking of Ukrainian distribution grid, it is important to acknowledge that the most vulnerable link in grid security is human. Stay tuned for our latest results in the coming months.
2018 Summer Interns
Friday | 20 July 2018
It was a pleasure working with our four undergraduate interns throughout this summer. Their projects contributed to the ongoing research in multi-microgrid control, and real-time operation of distribution systems. Wish them all the very best for the future!
From left: Praanesh, Daniel (UIUC, US), Sidhaarth (NIT Trichy, India), Jimmy, Raghav, Yihong (UIUC, US), and Malliga (NIT Trichy, India).
Completion of 2018 Final Year Projects
Wednesday | 18 April 2018
Congrats to our seven final-year students in completing their final-year projects. They all did a great job, and survived the research marathon. In particular, Huixun published her experimental work at IECON 2018. It was a pleasure working with you all. I hope you all will cherish the bond forged with your colleagues later in life!
From left: Desmond, Iman, Eugene, Siyue, Gabriel, and Hui Xun. Absent: Marcus
Kawsar Ali Appointed as Postdoc at Oxford University
Monday | 12 March 2018
Congratulation to Dr. Kawsar Ali for starting his new position as postdoctoral researcher at Oxford University. He will be working on electrical power conversion with Professor Dan Rogers at the Department of Engineering Science. Wish him all the best for his academic career. Dr. Kawar obtained his Ph.D. degree at NUS under the supervision of Dr. Jimmy Peng and Dr. Pritam Das.
Adedayo Aeribole Accepted into MIT's Ph.D. Program
Thursday | 8 February 2018
Congratulation to Adedayo Aeribole for being accepted into the Ph.D. program at Massachusetts Institute of Technology. He will be working on HVAC systems with Professor Steven Leeb at the Department of Electrical Engineering and Computer Science. This is an exciting opportunity, and we wish him all the very best. Adedayo previously completed his M.Sc. degree at Masdar Institute under the supervision of Dr. Jimmy Peng and Dr. Hatem Zeineldin.