V2G: Vehicle to Grid Power

AC Propulsion Provides Power for 500 New Electric Vehicles

San Dimas, CA – Nov. 19, 2008 – AC Propulsion supplies the electric propulsion and battery technology for the MINI E electric vehicle introduced today at the LA Auto Show by BMW Group. AC Propulsion has delivered more than 500 drive systems to the BMW Group factory in Munich for MINI E production.

“Working with BMW Group on the MINI E project has been a great opportunity,” said AC Propulsion CEO Tom Gage, “The schedule was tight and required a lot of discipline and coordination. We really pushed our manufacturing operation to meet the production schedule. I drove one of the cars in Munich and our drive system delivers the power, I couldn’t stop smiling. We’ve had cars with our drive systems on the road since 1992, and some have well over 100,000 miles on them, so we’ve seen our systems handle the rigors of daily use. This is a big step for electric vehicles.”

AC-150 A

Download a high resolution version of this photo here.

The MINI E uses a specially-developed version of AC Propulsion’s proprietary tzero™ technology to provide high performance, high efficiency, and fast charging. AC Propulsion’s air-cooled copper-rotor induction motor produces maximum torque from zero to 5,000 rpm and spins all the way up to 13,000 rpm. The IGBT inverter drives the motor to produce peak power of 150 kW. Even with this high power rating, the AC Propulsion drive system operates with high efficiency in normal driving. Powerful regenerative braking adds to the efficiency and driving appeal. When the car decelerates, the kinetic energy of motion is converted back to electrical energy in the battery………………….

………………………………………..The charger can discharge the battery as well as charge it. In effect, the charger can serve as a regulated power source with many possible applications including, battery pack self-diagnosis, back-up power, car-to-car charging, and, perhaps most importantly in the future, providing ancillary services to the power grid. Engineers have a term for this – vehicle-to-grid or V2G – and it promises to make smart grids of the future more efficient in providing electric power for cars as well as buildings.

V2G does not discharge the battery, so the car is always available for driving. But with each vehicle sourcing or sinking small amounts of power while plugged in, a fleet of V2G-capable vehicles can buffer natural variations in supply and demand on the grid, and even allow for higher utilization of solar and wind power.

AC Propulsion is working with V2G research and development programs throughout the US to supply V2G-capable vehicles, evaluate V2G functionality, and develop the communications and control systems that will necessary to enable electric vehicles to support the power grid.

Full details at http://www.acpropulsion.com/company/press-releases.php

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