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Dynamic Optimization of Power Flow and Electric Vehicle Resources in Smart Grid

Envision the possibility that smart electric cars cruise carefreely on the streets without worrying the batteries running out of juice. During hot summer days when air conditioners are running at the maximum, the electric utility can quickly balance supply and demand, shuffle and smooth the load to deliver power efficiently to the millions of households. The first scenario is a system of smart mobile batteries, while the second is a smart power system.
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Mass Transport in the Nano-structured Electrode of Polymer Electrolyte-based Fuel Cells

Concerns over climate change call for more innovative energy-conversion technologies to be developed and adopted to reduce the negative impacts associated with conventional fossil-fuel, combustion-based energy systems on the environment. Fuel cells have become one of the most promising energy-conversion technologies by virtue of their high efficiency and low or zero emission nature. However, they have yet to attain widespread appeal as their performance is still too low and their cost too high.  
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Smart Grid

Concerns with global warming prompt governments throughout the world to pursue policies aiming at increasing renewable energy generation so as to reduce greenhouse gases produced by electricity generation from fossil fuels. However, due to the intermittent characteristics of renewable energy sources such as wind and solar power, it is a challenge for systems with large renewable generation capacities to achieve real-time balance between power generation and consumption, without which power instabilities and even blackouts may occur.
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LED Replacement Lamp Driver with Universal Compatibility

Fluorescent lamps have been widely utilized in many residential, commercial and industrial sectors as they offer high efficacy and have proven operational stability. As they require a high voltage initially to discharge the lamp and have negative resistance, a device called ballast is used to generate the ignition voltage and regulate the lamp current. Ballasts are of two major kinds, low-frequency electromagnetic and high-frequency electronic. Electromagnetic ballasts are made of passive components.
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Sustainable Lighting Technology: From Devices to Systems

Lighting systems consume about 18% of electricity globally. This project focuses on “sustainable lighting technology”. It clarifies the important concept that “energy saving is not necessarily environmentally friendly”, unless the technology has long lifetime and a large portion of the product materials is recyclable. The research team is therefore promoting a new “Sustainability” concept involving three criteria, namely (1) energy saving, (2) long product lifetime and (3) recyclability.
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Exploiting Strain-relaxed Quantum Wells for Broadband Emission LEDs

Light, as one of the most common media of information transfer, is closely related to our daily life. From incandescent to solid-state lighting based on light-emitting diodes (LEDs), artificial light sources keep on improving in terms of energy efficiency. Faced with increasing energy shortages nowadays, LED technology has attracted much interest due to its significantly higher energy transfer efficiency compared with traditional light sources. LEDs, being semiconductor devices based on the fundamental p-n junction, produce light with the energy released during the radiative recombination processes of its carriers.
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