Professor Naehyuck Chang from the Department of Electrical Engineering and three researchers, Jaemin Kim, Yanzhi Wang, and Massoud Pedram, have received the Best Paper Award at 2014 ACM/IEEE International Symposium on Low Power Electronics and Design (ISLPED 2014). The symposium was held in La Jolla, California, U.S. from August 11 to 13.

▲ Professor Naehyuk Chang

ISLPED is the premier forum for the presentation of recent developments in all aspects of low-power design and technology. The presentation topic ranges from process and circuit technologies, simulation and synthesis tools, to system-level design and software optimization. 

This year, the Technical Program Committee (TPC) attracted 184 paper submissions from Asia, Africa, Europe, and the Americas. The committee accepted a total of 63 papers with 43 full-length presentations and 20 posters. This year's ISLPED program consisted of three main sessions: the Industry Focus Session on Low-power Circuits & Technologies, Four Embedded Invited Papers on Emerging Low-power Topics, and the Embedded Tutorial by industry EDA experts. 

Professor Chang's awarded paper, "Fast Photovoltaic Array Reconfiguration for Partial Solar Powered Vehicles(PV)" proposes fast online PV array reconfiguration and customization of the PV panel installation according to the driving pattern, resulting in the maximization of solar power generation for EVs. The research team implemented a high-speed, high-voltage PV reconfiguration switch network with IGBTs and a reconfiguration controller. The paper also solved the design-time optimization problem of deriving the optimal size of each PV cell, to achieve a desirable trade-off between performance and reconfiguration complexity, and overhead.

Professor Chang's CAD4X (Computer-aided design for 'X') laboratory, one of the leading groups in power and energy optimization from embedded systems applications to large-scale energy systems, focuses on the systematic design and optimization using computer-aided design of beyond semiconductor circuits and systems including energy systems. His laboratory has developed many of the world's first innovative technologies in various fields such as device-level and system-level power/energy measurement/estimation, LCD power reduction, low-power SDRAM and flash memory systems, and so forth. Moreover, the CAD4X laboratory recently initiated the systematic optimization of electric vehicles and electromobility by introducing a full-custom electric vehicle. 

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