Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Thevenin equivalent"”.
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Application of PMU for system stability analysis with Thevenin equivalent modeling
… of the power system state by its Thévenin equivalent circuit. Rather than using simulators to model a power system, developing a Thévenin equivalent circuit for power grid enables a more reliable way to estimate the health of the system. As a continuation of the previously proposed …
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Dynamic State Estimation of Microgrid With Imperfect Data Communication
… using a classical generator model connected to a Thevenin equivalent of the remainder of the microgrid. The model is used to estimate the six states variables of the generator; namely, rotor angle, speed variant, d- and q- axis transient voltages, d-axis damper flux, and q-axis second damper flux. …
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RF coupling to realistic wire systems in complex environments
… devices connected by these wires in the DUT. The Equivalent Circuit Approach (ECA) provides a unique solution to this complicated coupling problem by modeling the wires as a receiving antenna represented by a Thevenin equivalent circuit terminated with the linear/nonlinear load of interest. The …
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Online Identification, Monitoring, and Control of A Dc/Dc Converter System Using Digital Network Analyzer Techniques
… method is extended to include measurement of the Thevenin equivalent impedances looking outward from a converter. For each of the proposed improvements and extensions, simulation and experimental results are shown to provide verification. Finally, these tools are used to automate detection of …
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Broadband acoustic energy harvesting via synthesized electrical loading
… The model can be represented by a linearized equivalent circuit and subsequently a Thevenin equivalent model. Optimal broadband energy harvesting is achieved in theory with a conjugate matched load at all frequencies. This load is realized using operational amplifier circuitry, with special …
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Development of a power conditioner for a PMSG-based wind energy system integrated into a weak grid
… as STATCOM devices. To represent a weak grid, a Thevenin equivalent model of the electric network is considered with unbalanced loads. The main objective of this project is to transform the traditional converter topology into a versatile system that can perform as a power conditioner. In …
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Performance Assessment and Management of Large Wind Farms under Abnormal Grid Operating Conditions
… issues. The proposed sequence network equivalent method proposed in this thesis helps to estimate dynamic fault impedance value without theoretical calculations during the fault. All three objectives delivered through this thesis revolve around understanding and exploring performance …
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A Line Outage Study for Prediction of Static Power Flow Redistribution
… after a line outage. After that, a definition of Thevenin electrical distance between two transmission lines is derived and applied to calculate electrical distances between the outage line and each line in the system. An exponential convergence tendency is found between maximum possible LODF …