Conditions for existence of equilibrium points of systems with constant power loads

S. Sanchez Roméo Ortega 1 R. Grino G. Bergna M. Molinas-Cabrera
1 Division Systèmes - L2S
L2S - Laboratoire des signaux et systèmes : 1289
Abstract : In this paper we investigate the sine qua non condition of existence of equilibria for electrical systems with external sources furnishing constant power to the loads, which is a scenario encountered in modern applications. Two general cases are considered, when the system is (i) linear time-invariant or (ii) nonlinear, with dynamic behavior described by a port-Hamiltonian model with constant dissipation and switching interconnection matrix. The latter class includes the practically important case of power converters. For both cases necessary and sufficient conditions for existence of equilibria are given, which impose that the power dissipated in steady-state should exceed the extracted constant power. The equilibrium is ensured if and only if the inequality is satisfied.
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Submitted on : Tuesday, January 14, 2014 - 11:03:21 AM
Last modification on : Thursday, April 26, 2018 - 2:31:04 PM

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S. Sanchez, Roméo Ortega, R. Grino, G. Bergna, M. Molinas-Cabrera. Conditions for existence of equilibrium points of systems with constant power loads. 52nd IEEE Conference on Decision and Control CDC 2013, Dec 2013, Florence, Italy. pp.1-5, ⟨10.1109/cdc.2013.6760443 ⟩. ⟨hal-00929992⟩

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