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In most distributed power electronic systems, the transmission line effects associated with cabling are neglected due to the expectation that cables are sufficiently short to be modeled as a lumped parameter model. However, as converter switching speeds and control bandwidth increase, especially in large distributed power electronic based systems, the transmission line effects may become an important...
This paper addresses the influence that different type of loads and renewable distributed generation have in microgrids load margin. Considering different load types, in order to bring the system closer to a practical case, and renewable generation is fundamental given its ascension in the latest years. To validate this analyses, the IEEE 57 bus transmission system was employed. Simulations were performed...
Bilateral teleoperation systems with haptic feedback allow human users to interact with objects or perform complex tasks in remote or inaccessible environments. Communication delays in teleoperation systems jeopardize system stability and transparency, leading to degraded system performance and poor user experience. In this paper, we provide a survey of the model-mediated teleoperation (MMT) approach,...
To investigate the input impedance of digital-controlled bi-directional DC/DC converters, this paper develops a modeling method based on the sampled-data approach. Because the nonlinear pulse-width modulator generates sideband components, the sideband effect occurs in a closed-loop converter. And the sampling process of a digital controlled system can significantly influence the sideband components...
This paper addresses the two-port network behavioral modeling of the power converters for renewable energy sources that feature non-linear static behavior. Based on the Hammerstein's approach, two models, non-linear dc and linear ac are both run simultaneously in the simulation while the dynamic model is constantly being updated with the operating point values from the static model, in order to include...
A novel in-situ impedance probing method is described which provides a noninvasive means to determine in-situ impedances and nodal mismatch, compute precise gain budgets, assess stability, and compute active external and intrinsic device load lines within a multistage power amplifier, using a single linear simulation. Precise determination of important performance parameters and figures of merit can...
An interactive, menu-driven computer program has been developed to analyze the small signal performance of electrical power systems. The Small Signal AC (SSAC) program enables the analysis of an arbitrary power system configuration using generic components. A component may be specified in terms of canonical circuit parameters or by selecting the entire component from a library. New component models...
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