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This paper proposes an equivalent circuit modeling method using the transmission line model to characterize the wideband behavior for the universal ac motors. Base on the measured network parameters of an ac motor, per-unit-length (PUL) transmission line parameters are extracted. Through analysis of the frequency-dependent PUL parameters, an equivalent circuit model is constructed with considering...
For the electrical modeling of electronic packaging composed of planar and vertical interconnections, this paper presents the combination of two integral equation based circuit extraction methods. Each method, which geometrically accords with planar or cylindrical structures, can generate equivalent circuit elements separately. The planar and cylindrical interconnection models are connected in circuit...
This paper proposes an improved high-frequency equivalent model of ac machine, focusing on the accurate extraction of stator-to-frame capacitance. The behavior that the capacitance decreases in several stages throughout the observed frequency is analyzed and modeled by applying Debye model. To verify the constructed equivalent model, the input and transfer impedances of a phase line is compared with...
This paper proposes a method that extracts the phase-to-phase coupling of the three-phase stator winding of an ac motor for high-frequency characterization. Under the assumption of a symmetric structure, the multiport network parameters are obtained by the conversion of two-port mixed-mode network parameters. The proposed method simplifies the calculation to extract the impedance parameters of the...
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