Transatlantic Workshop on Electric Vehicles and Grid Connectivity Opportunities for Cooperation on Technology Development to Support a Robust Vehicle-Grid Interface Keith Hardy Argonne National Laboratory Vehicle Technologies Program US Department of Energy
Transatlantic Workshop on Electric Vehicles and Grid Connectivity Home Network Smart Meter Power Panel Human Machine Interface (HMI) * 2-way communication to vehicle/grid Practical evaluation of protocols SAE J2836/2847/2931 EV Sub-meter * Revenue grade Enables preferential and time-of-use pricing Universal Communication Technology * e.g., Software Defined Radio-SDR Consumer-Vehicle-Grid Communication ► Vehicle ID, location, charge requirements ◄ Power available, price, recommended charge time SAE J2836 ISO/IEC 15118; general info (use cases) SAE J2847 ISO/IEC 15118; detailed info (messages) SAE J2931 ISO/IEC 15118; protocol (requirements) Back Office Software Comprehend vehicle roaming Integrate EVs in the smart grid Streamlined EVSE Installation Process * Best practices and permitting template Charge Couplers Global interoperability SAE J1772 Energy Producers Utilities Grid Operators Opportunities in the Vehicle-Grid System Electric Drives Test procedures and ratings SAE J2907/2908 Battery System Safety Test procedures, shipping and handling SAE J2929 Vehicle Test Procedures Fuel/energy consumption Consumer labeling (e.g., EPA) SAE J1711 Verification of EVSE Interoperability * SAE J2953 * Joint (government-industry) Grid Interaction Tech Team projects
Transatlantic Workshop on Electric Vehicles and Grid Connectivity Revenue Grade Sub-meter: - Utility owns sub-meter, customer owns base - Based on 0.1% accuracy - Revenue grade ‘subtractive’ meter is 0.3% class - Communication based on Zigbee/UMAN via SDR Software Defined Radio (SDR): - Enables Single Chip Communication Solution - Vehicle-Grid Communication - Flexible Universal Metropolitan Area Network - OFDM modulation achieved in 16,000 gate FPGA - Programmed for Zigbee (IEEE ) - UMAN (IEEE g); flexible baseband frequency Current sensors built into bus bars; Single board metrology, 90x50x25 mm OFDM modulation/demodulation example Prototype SDR implemented on (non-optimized) evaluation board Potential cooperative field evaluation and access
Transatlantic Workshop on Electric Vehicles and Grid Connectivity Interactive Vehicle-Grid Connectivity Technology Demonstrator Interactive