1. Team Gong PDR SDP10 Preliminary Design Review Team Gong: Jason Dodge Eric Every Andrew Hills Alan R Levin Is Your Refrigerator Running?

2. Team Gong PDR SDP10 Outline  Background  Concept  Vision  Block Diagram  Deliverables  Design Challenges  Feasibility  Team Organization  MDR Deliverables  Gantt Chart

3. Team Gong PDR SDP10 Background  Load is constantly changing on Power Grid  Increased load corresponds to decreased frequency. Maintained at 59.5-60.5Hz  Why does it matter? Damage to generators and loads Causes inefficiencies Devices may fall out of compliance

4. Team Gong PDR SDP10 Background Continued Courtesy of: www.BeaconPower.comwww.BeaconPower.com

5. Team Gong PDR SDP10 Background Continued  Solutions already in place: Diesel generators or gas turbines Fast, but inefficient Calling companies to shed load Not automated Flywheels to store power Efficient, but expensive  Appliances with duty cycles can be controlled en masse to adjust the load from the user end

6. Team Gong PDR SDP10 Concept  Allows for close monitoring by Utility Company  Grants Customer control of operating parameters  Provides a relatively inexpensive alternative through retrofitting  Provides an automated way to compensate Customers for decreasing energy usage  Encourages customer power savings

7. Team Gong PDR SDP10 Vision

8. Team Gong PDR SDP10 Vision Continued  Appliance Node Wireless/Wired Communication Relay and thermometer retrofitted to refrigerator  Meter Node Wireless/Wired Communication Measurement devices to determine state of Grid  Customer Server Software Receives messages from Meter Node Sends instructions to Appliance Nodes  Utility Control Software Sends requests to Customer Control Software Collects information from Customer Control Software

9. Team Gong PDR SDP10 Block Diagram

10. Team Gong PDR SDP10 Deliverables  Working Prototypes of Appliance and Meter Nodes  Software Suite for Utility and Customer communication and communication with Nodes

11. Team Gong PDR SDP10 Design Challenges  Safety Relays must safely cut and source power to fridge  Accurate Measurements Frequency, Power Temperature  Communication Stable and secure communication between all components  Resource Allocation Algorithm Efficiently manage requests from Utility without compromising parameters set by Customer

12. Team Gong PDR SDP10 Feasibility  7-10% of US load is due to refrigeration  Refrigeration is 60% of grocery store energy use Courtesy of www.FocusOnEnergy.com Table courtesy of Big Ywww.FocusOnEnergy.com

13. Team Gong PDR SDP10 Team Roles  Project Manager: Andrew Hills  Research and Justification Every, Levin  Sensors/Switching Dodge, Every, Levin  Embedded Design/Networking Dodge, Hills  Software Development Hills, Levin  PCB Layout/Component Specification Every

14. Team Gong PDR SDP10 MDR Deliverables  Appliance Node Prototype Relay Multimeter Thermometer

15. Team Gong PDR SDP10 Gantt Chart