This dissertation deals with the order reduction of large-scale models of electromagnetic (EM) devices. In particular, it focuses on devices that contain moving components and materials with nonlinear magnetic properties such as electrical machines and EM valves. The presented work exploits the trajectory piecewise linear (TPWL) reduction approach in modeling the nonlinear behavior of magnetic material. Moreover, it introduces a new approach for modeling the components movement and its influence on the reduced order EM field model. A new physically motivated algorithm for selecting the number and the positions of the linearization points in the TPWL model is introduced. Additionally, an approach for generating parametric reduced order models of moving nonlinear EM devices is developed. The work is concluded by presenting a scheme for the reduced order modeling of EM devices including their power electronic driving circuits.
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This dissertation deals with the order reduction of large-scale models of electromagnetic (EM) devices. In particular, it focuses on devices that contain moving components and materials with nonlinear magnetic properties such as electrical machines and EM valves. The presented work exploits the trajectory piecewise linear (TPWL) reduction approach in modeling the nonlinear behavior of magnetic material. Moreover, it introduces a new approach for modeling the components movement and its influence...
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