Search Results - "Orcajo, Gonzalo A."

Parameter Identification Method of a Double-Layer Supercapacitor by Using a Real Voltage Source by Pedrayes, Joaquín F., Zaldivar, Enrique E., Quintana, María F., Orcajo, Gonzalo A., Cabanas, Manés F., Viera, Juan C.

“…This article presents a new method for obtaining the electrical parameters of a supercapacitor (SC) modeled as a constant resistor in series with a capacitance…”
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Non-Linear Analytical Model for the Study of Double-Layer Supercapacitors in Different Industrial Uses by Pedrayes, Joaquín F., Quintana, Maria F., Cabanas, Manés F., Melero, Manuel G., Orcajo, Gonzalo A., González, Andrés S.

“…It is generally considered that the representation of a double layer supercapacitor (DLSC) cannot be performed with the usual capacitance and resistance series…”
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Sizing Methodology of a Fast Charger for Public Service Electric Vehicles Based on Supercapacitors by Pedrayes, Joaquín F., Melero, Manuel G., Cabanas, Manés F., Quintana, Maria F., Orcajo, Gonzalo A., González, Andrés S.

“…In this article, a new methodology for the sizing of a fast-charging station for electric vehicles is presented. The proposed method is applicable to public…”
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Thermal Analysis of a Fast Charger for Public Service Electric Vehicles Based on Supercapacitors by Pedrayes, Joaquín F., Quintana, María F., Orcajo, Gonzalo A., Zaldivar, Enrique E. Valdés, Melero, Manuel G., Cabanas, Manés F.

“…The aging of supercapacitors (SCs) depends on several factors, with temperature being one of the most important. When this is high, degradation of the…”
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Supercapacitors in Constant-Power Applications: Mathematical Analysis for the Calculation of Temperature by Pedrayes, Joaquín F., Melero, Manuel G., Norniella, Joaquín G., Cabanas, Manés F., Orcajo, Gonzalo A., González, Andrés S.

“…A set of analytical equations for the calculation of the temperature in supercapacitors operating in constant-power applications is presented in this paper…”
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Estimation of Impedance Ratio Parameters for Consistent Modeling of Tap-Changing Transformers by Mojumdar, Md Rejwanur R., Cano, Jose M., Orcajo, Gonzalo A.

“…Recent contributions have shown that two widely used formulations of the tap-changing transformer model are controversial, as they generate dissimilar results…”
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Improving distribution system state estimation with synthetic measurements by Cano, Jose M., Arboleya, Pablo, Rashad Ahmed, Mahmoud, Mojumdar, Md Rejwanur R., A. Orcajo, Gonzalo

“…•Light coupling between phases is a challenge for state estimators at the LV level.•Sensitivity of angle estimation errors to measurement noise shows large…”
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Phase shifting transformer model for direct approach power flow studies by Cano, José M., Mojumdar, Md. Rejwanur R., G. Norniella, Joaquín, A. Orcajo, Gonzalo

“…•A phase shifting transformer model for DA power flow studies is proposed.•The inclusion of medium-length lines in DA power flow studies is formulated.•The…”
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Lambert W function based closed-form expressions of supercapacitor electrical variables in constant power applications by Pedrayes, Joaquín F., Melero, Manuel G., Cano, Jose M., Norniella, Joaquín G., Duque, Salvador B., Rojas, Carlos H., Orcajo, Gonzalo A.

“…The traditional model used to represent the electrical behavior of supercapacitors (SCs) operating at constant power leads to a well-known differential…”
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A novel analytical solution for the calculation of temperature in supercapacitors operating at constant power by Pedrayes, Joaquín F., Melero, Manuel G., Norniella, Joaquín G., Cano, José M., Cabanas, Manés F., Orcajo, Gonzalo A., Rojas, Carlos H.

“…Temperature evolution in supercapacitors (SCs) when they are charged or discharged at a constant current is a well-known process. However, it does not exist…”
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Optimization of supercapacitor sizing for high-fluctuating power applications by means of an internal-voltage-based method by Pedrayes, Joaquín F., Melero, Manuel G., Cano, José M., Norniella, Joaquín G., Orcajo, Gonzalo A., Cabanas, Manés F., Rojas, Carlos H.

“…The latest advances in the field of supercapacitors (SCs) have made them a feasible alternative to be used in hybrid, energy storage systems. Sizing SCs in…”
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Consensus Phase Shifting Transformer Model by Mojumdar, Md Rejwanur R., Cano, Jose M., Assadi, Mohsen, Orcajo, Gonzalo A.

“…The model of regulating transformers used in classic power system studies, such as load flow analysis or state estimation, is still debatable. A recent…”
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On the Consistency of Tap-Changing Transformer Models in Power System Studies by Cano, Jose M., Mojumdar, Md Rejwanur R., Orcajo, Gonzalo A.

“…The tap-changing transformer models used in steady-state power system studies have been recognized as somehow controversial for a long period. Indeed,…”
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A New Portable, Self-Powered, and Wireless Instrument for the Early Detection of Broken Rotor Bars in Induction Motors by Cabanas, M. F., Pedrayes, F., Rojas, C. H., Melero, M. G., Norniella, J. G., Orcajo, G. A., Cano, J. M., Nuno, F., Fuentes, D. R.

“…The detection of rotor asymmetries in squirrel-cage induction motors has been an important research topic during the last two decades that has given rise to…”
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Diagnosis of Electrical Distribution Network Short Circuits Based on Voltage Park's Vector by Orcajo, G. A., Cano, J. M., Melero, M. G., Cabanas, M. F., Rojas, C. H., Pedrayes, J. F., Norniella, J. G.

“…This paper proposes a short-circuit diagnosis tool for electrical low-voltage (LV) distribution networks. The tool relies on analyzing Park's vector…”
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A New Online Method Based on Leakage Flux Analysis for the Early Detection and Location of Insulating Failures in Power Transformers: Application to Remote Condition Monitoring by Cabanas, M.F., Melero, M.G., Pedrayes, F., Rojas, C.H., Orcajo, G.A., Cano, J.M., Iglesias, J.G.

“…Power transformers figure to be amongst the most costly pieces of equipment used in electrical systems. A major research effort has therefore focused on…”
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Application of loop power flow controllers for power demand optimization at industrial customer sites by Cano, Jose M., Norniella, Joaquin G., Rojas, Carlos H., Orcajo, Gonzalo A., Jatskevich, Juri

“…The application of power electronic converters in the form of loop power flow controllers to distribution radial feeders in order to improve the efficiency of…”
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Wide Voltage-Regulation Range Tap-changing Transformer Model for Power System Studies by Cano, Jose M., Mojumdar, Md Rejwanur R., Orcajo, Gonzalo A.

“…Tap-changing transformer models used in power system studies tend to neglect the change in the short-circuit impedance of the device at the different tap…”
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Coupling Inductor Fault Detection and Estimation in Three-Phase Adjustable-Speed Drives With Direct Power Control-Based Active Front-End Rectifiers by Norniella, Joaquín G., Cano, Jose M., Orcajo, Gonzalo A., Rojas, Carlos H., Pedrayes, Joaquín F., Cabanas, Manes F., Melero, Manuel G.

“…Coupling inductors are the most commonly utilized filtering option in grid-connected direct power control (DPC)-based active front-end rectifiers integrated…”
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Smoothing Parameter Optimization Routine for High-Quality a Priori Estimates in Forecasting-Aided State Estimation by Mojumdar, Md Rejwanur R., Cano, Jose M., Jaman, Shahid, Orcajo, Gonzalo A.

“…Forecasting-aided state estimation is a topic of great research interest for future intelligent power grids. Estimators in this class commonly use an…”
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