Results 141 to 150 of about 3,762,663 (201)
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Small-signal dynamic modeling of HVDC systems
IEEE Transactions on Power Delivery, 2002This paper details the development of a linear continuous-time state model of the small-signal dynamics of a high-voltage direct current (HVDC) transmission system. The dynamics in the frequency range between 2 and 200 Hz on the DC side are of interest for the identification of possible stability problems and the design of the fastest level of ...
C. M. Osauskas, A. R. Wood
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Small-signal modeling of graphene barristors
Physica E: Low-dimensional Systems and Nanostructures, 2015Abstract This paper presents a small-signal model for graphene barristor, a promising device for the future nanoelectronics industry. Because of the functional similarities to the conventional FET transistors, the same configuration and parameters, as those of FETs, are assumed for the model.
Ahmad Khayatian +2 more
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Small signal multi-level STATCOM model
2006 IEEE Power Engineering Society General Meeting, 2006This paper presents analytical approach for modelling a multilevel STATCOM system. The small-signal dynamic STATCOM model has modular structure and consists of two separate subsystem models: an AC model and a DC model. The converter, controller and phase-locked-loop (PLL) unit are included in the DC model.
R. Sternberger, D. Jovcic
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Small signal modeling of wind farms
2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017In large power electronic systems like a wind farm, the mutual interactions between the control systems of the power converters can lead to various stability and power quality problems. In order to predict the system dynamic behavior, this paper presents an approach to model a wind farm as a Multi-Input Multi-Output (MIMO) dynamic system, where the ...
Esmaeil Ebrahimzadeh +7 more
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SiGe HBT's Small-Signal Pi Modeling
IEEE Transactions on Microwave Theory and Techniques, 2007This paper presents the derivation procedure used in determining the parameters in SiGe HBT's small-signal model where the Pi circuit configuration is employed. For both the transistor's external base-collector capacitor and its base spreading resistor, new close-form expressions have been derived.
Tian-Ren Yang +3 more
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Transforming small-signal modeling into control system modeling
Proceedings of the IEEE 1998 Custom Integrated Circuits Conference (Cat. No.98CH36143), 2002This paper describes the transformation of small-signal modeling into control system modeling. Transforming a small-signal circuit into a control system equivalent results in a behavioral signal path model. A behavioral signal path model gives insight in the operation of a circuit because it shows all the different conversions from current to voltage ...
F. Leyn, W. Sansen, G. Gielen
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Small-signal modeling of HVDC systems
2020In this chapter, how the current control loop and the outer loops that feed to it can be analyzed via small-signal modeling was shown. Thereby, an input-admittance matrix is formed, which characterizes the behavior of the VSC-HVDC terminal as seen from the PCC. This matrix is operating-point dependent. By modeling the grid impedance as a matrix as well,
Lennart Harnefors +2 more
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Three-phase photovoltaic inverter small-signal modelling and model verification
6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), 2012The number of power electronic converters is increasing in the grid due to favourable political climates regarding renewable energy resources. Grid-parallel inverters have been shown to suffer from reliability problems that may not be solved with pure time domain analysis.
Puukko Joonas +2 more
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