Jeffrey Powers talks to David Wang and Joshua Caillavet of General Electric about the GE EV Watt station, which is a charging station for electric cars. This is a level 2 charger, operating from 240V, rather than 110V, giving shorter recharge times for EVs (electric vehicles), say 4 to 8 hours, rather than 15 to 18 hours associated with a level 1 charger.
Fortunately, common sense seems to have prevailed with electric cars and a charging connector standard has been agreed by the manufacturers, so there shouldn’t be any compatibility problems between chargers and EVs.
Andy and Tom interview Elizabeth Kurfess, Product Manager for General Electric on GE Nucleus, a home energy management system. As utilities start to install smart meters on the outside of homes, the Nucleus unit wireless communicates with the smart meter to bring information on power consumption and tariffs into the home, allowing the homeowner to make intelligent decisions about the use of electrical power.
The information held in Nucleus can be shown on the homeowner’s PC or smartphone so that a real-time view of power consumption can be seen.
Nucleus can also connect to GE’s Brillion-enabled household appliances (white goods) to get information on consumption and instruct the appliance to stop or start depending on price. For example, a tumble dryer could be told to start drying once the cheap rate cuts in or stop if an expensive tariff comes on-line.
Wireless communication uses the Zigbee specification to pass the information between the appliances, the smart meter and the Nucleus. Information comes from the meter every15 seconds. Unfortunately, not every smart meter uses Zigbee – each manufacturer is different.