EV Power System Modeling and Control

Rick Meyer, Western Michigan University

Power system modeling and optimal control for electric transportation applications involves switched systems, i.e., the system has components with dynamics that change based upon the direction of power flow. Control of switched power systems typically requires consideration of integer variables associated with the directions of power flow in the system, requiring specialized numerical solvers. Rick Meyer presented power flow-based component modeling that treats each component as a power converter with some efficiency. Models are oriented toward control development and can include dynamics at different time scales. Components are connected together into systems using power as a connection variable. Further, to solve the power system management control problem using traditional solvers rather than specialized ones, an embedding method is described that embeds the original switched problem into a traditional problem. Application of the power system modeling and embedding method for switched system control will be presented for ground vehicles and hybrid electric propulsion for general aviation aircraft.

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