1. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011 Yi Lu – China – S1 – Paper 0693 A Universial Power Electronic Interface for Distributed Generation and Electric Vehicles Y. Lu 1, X. M. Huang 1, Q. H. Wu 2 1 Zhejiang Electric Power Test and Research Institute, Hangzhou, China 2 Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, UK

2. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011  The Motive  The Approach  Circuit Topology  Control System  The Prototype and Test Results  Acknowledgments Yi Lu – China – S1 – Paper 0693 Outline

3. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011 Yi Lu – China – S1 – Paper 0693 Electric Vehicles DG  Impact on demand control  Unpredictability115 Charging Stations 20,200 Charging Spots Estimated over 10,000 10,000 EV Users 1 million Home PV 1 MW Small Wind turbines 10 to 20 DG demonstration projects  require reactive power support  high harmonics

4. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011 Yi Lu – China – S1 – Paper 0693 Local Utility AC network Consumer AC Network The Power Electronic Interface DC Q P DG Units The Approach

5. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011 Yi Lu – China – S1 – Paper 0693 Main parameters Real power: 50kW Reactive power: ±50kvar AC input Volt.:380±15% Input freq.: 50Hz±15% DC current ripple: ≤1% Max. efficiency: ≥93% 3 2 1 Circuit Topology

6. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011 Control System Yi Lu – China – S1 – Paper 0693

7. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011 Yi Lu – China – S1 – Paper 0693 The Prototype & Test Results The protype is yet to be field tested in the Haiyan Smart Grid pilot project

8. Frankfurt (Germany), 6-9 June 2011Frankfurt, 6-9 June 2011 Very grateful to the Zhejiang Electric Power Corporation of the State Grid for supporting the research through project “The Key Technologies in a Smart Distribution Grid” (Contract No. ZDK082-2010) and for allowing this paper to be published. Yi Lu – China – S1 – Paper 0693 Acknowledgements