Vehicle to grid: electric vehicles as an energy storage solution

Rodney McGee; Nicholas Waite; Nicole Wells; Fouad E. Kiamilev; Willett M. Kempton

doi:10.1117/12.2016318

28 May 2013 Vehicle to grid: electric vehicles as an energy storage solution

Rodney McGee, Nicholas Waite, Nicole Wells, Fouad E. Kiamilev, Willett M. Kempton

Proceedings Volume 8728, Energy Harvesting and Storage: Materials, Devices, and Applications IV; 87280T (2013) https://doi.org/10.1117/12.2016318
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

With increased focus on intermittent renewable energy sources such as wind turbines and photovoltaics, there comes a rising need for large-scale energy storage. The vehicle to grid (V2G) project seeks to meet this need using electric vehicles, whose high power capacity and existing power electronics make them a promising energy storage solution. This paper will describe a charging system designed by the V2G team that facilitates selective charging and backfeeding by electric vehicles. The system consists of a custom circuit board attached to an embedded linux computer that is installed both in the EVSE (electric vehicle supply equipment) and in the power electronics unit of the vehicle. The boards establish an in-band communication link between the EVSE and the vehicle, giving the vehicle internet connectivity and the ability to make intelligent decisions about when to charge and discharge. This is done while maintaining compliance with existing charging protocols (SAEJ1772, IEC62196) and compatibility with standard “nonintelligent” cars and chargers. Through this system, the vehicles in a test fleet have been able to successfully serve as portable temporary grid storage, which has implications for regulating the electrical grid, providing emergency power, or supplying power to forward military bases.

Citation Download Citation

Rodney McGee, Nicholas Waite, Nicole Wells, Fouad E. Kiamilev, and Willett M. Kempton "Vehicle to grid: electric vehicles as an energy storage solution", Proc. SPIE 8728, Energy Harvesting and Storage: Materials, Devices, and Applications IV, 87280T (28 May 2013); https://doi.org/10.1117/12.2016318

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KEYWORDS

Solar energy

Data communications

Renewable energy

Telecommunications

Control systems

Electronics

Analog electronics

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