Passivity Violations and Feedback-Loop Stability -- On Optimality Criteria for Reverse Charging of Electric Vehicles

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• Wynita Griggs, The Hamilton Institute
• Thursday 14 June 2012, 11:00-12:00
• CAP Seminar Room .

If you have a question about this talk, please contact Alessandro Astolfi.

Part I

Many stability results in feedback control analysis and design assume certain system properties. An example of such a result is the well-known passivity theorem, whereby feedback-loop stability is guaranteed if both plant and controller are (strictly) passive. In reality, unmodelled dynamics of sensors or actuators, for instance, can destroy nominal passivity of a system under control. We discuss some of our contributions towards the study of passivity violations.

Part II

Ever-increasing expectations regarding penetration levels of electric vehicles (EVs) are driving several areas of research concerning the problem of EV charging. One topic of interest treats EVs, not only as controllable loads, but also as storage systems, able to reduce stresses on the grid during peak times by injecting power back to the grid. This is known as vehicle-to-grid. In this presentation, we formulate the reverse-charging problem as an optimisation whose goal is to minimise the effect of energy return on the environment.

This talk is part of the Control and Power Seminars series.

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