High-performance electric-powered race cars are an outstanding application of motor controls, power electronics, and energy management system. These battery-powered cars have a maximum power of 200 kW and can reach speeds of over 225 mph. Learn more about Learn more about this exciting new form of auto racing in these YouTube videos:
Energy storage is a necessary component of practical solar or wind energy systems. Without storage, a passing cloud or a day of calm winds could result in the lights turning off.
This article from philly.com discusses a proposed energy storage system that may be used to complement wind energy in Central Pennsylvania. The Bucks County-based Merchant Hydro Developers wants to convert 21 out-of-use anthracite coal mines into pumped storage facilities. When power is less expensive, intermittent wind power will be used to pump water into an upper reservoir. When energy prices rise during the middle of the day, the water will be released into the lower reservoirs of the mines, spinning turbines on the way down to generate a consistent and predictable flow of power.
Pumped hydro storage already accounts for the vast majority of stored energy in the world including 97% of the energy storage in the United States. The coal mine reservoir solution is unique because it is a closed system. Most pumped storage draws from flowing bodies of water (e.g. rivers) and released the water back into the same system.
Nanyang Technological University (NTU) is constructing four offshore hybrid microgrid systems in Singapore under the Renewable Energy Integration Demonstrator-Singapore (REIDS) initiative. The microgrids will include over 3,000 square meters of solar panels; their first customers will include fish hatcheries and nurseries in Singapore.
Read more from Asian Scientist Magazine at: http://www.asianscientist.com/2016/11/tech/reids-initiative-singapore-offshore-renewable-energy-system-ntu/
Recent repair work in IPSL (Interconnected Power Systems Laboratory) made it possible to take a look inside an IPSL Station. The image below shows the front panel of an IPSL Station and the back of the station with the cover removed. Each station contains the connection terminals for:
AC and DC sources
Field and armature circuits of the rotating machines
Connections to the main transfer panel, where power can be routed to the loads (light bulb banks, inductor carts, and capacitor boxes)
Transmission lines and transformers
The actual rotating machines and their protection systems are located behind each IPSL station (not pictured here). Signal conditioning boxes, used to measure sending end and receiving end voltages and currents, sit on top of each IPSL station. Visit the IPSL Lab Page to learn more.
Drexel University Department of Electrical and Computer Engineering