Výsledky vyhledávání - "Nelson Sadowski"

Akademický článek

Modeling of Electrical Machines Hysteresis Losses Under Mechanical Stresses

Autor: Indiara P. C. da Silva, Rodrigo A. Miranda, Nelson Sadowski, Nelson J. Batistela, Laurent D. Bernard, João Pedro A. Bastos

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 3 (2024)

Abstract The effect of mechanical stress on hysteresis losses of electrical steel sheets is investigated in this paper. Experimental data obtained from a dedicated bench are used in a curve fitting procedure to analyze the parameters behavior for a h

Externí odkaz: https://doaj.org/article/21aaf7ff217e49f3adf1b33582d2cba7

Zobrazit plný text záznamu

Akademický článek

Experimental Loss Segregation in a Solid Rotor Induction Motor

Autor: Carlos A. C. Wengerkievicz, Nelson J. Batistela, Nelson Sadowski, Thomas Huguet, Yvan Lefèvre

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 21, Iss 4, Pp 584-597 (2022)

Abstract Solid rotor induction motors (SRIMs) are asynchronous motors suited for high speed applications. This work presents an experimental case study where standard loss segregation procedures for induction motors are performed with a two-phase smo

Externí odkaz: https://doaj.org/article/0fc0536ee36044749d918a333525691e

Zobrazit plný text záznamu

Akademický článek

An Analysis of Minor Hysteresis Loops Behavior under PWM Voltage - Electromagnetic Device at No-Load and Loaded Conditions

Autor: Ricardo de A. Elias, Carlos A. C. Wengerkievicz, Guilherme H. Souza Reis, Nelson Sadowski, Nelson J. Batistela, João Pedro A. Bastos

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 20, Iss 4, Pp 745-762 (2021)

Abstract This paper addresses the influence of the primary and secondary resistances on the behavior of minor hysteresis loops when the electromagnetic device is fed by three-level PWM (pulse width modulation) voltage. To study the device transferrin

Externí odkaz: https://doaj.org/article/9df0620f528d44e8954ad0aa72755368

Zobrazit plný text záznamu

Akademický článek

A New Method for Iron Loss Separation

Autor: Filomena B. R. Mendes, Fredy M. S. Suárez, Nelson J. Batistela, Jean V. Leite, Nelson Sadowski, João P. A. Bastos

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 20, Iss 4, Pp 763-776 (2021)

Abstract In this work we propose a new method to separate iron losses by removing low frequency tests and reducing the number of experiments. The article deals with methodologies that use numerical methods to find the mathematical model coefficients

Externí odkaz: https://doaj.org/article/084937c9fed04efe86c08587e0bd53ee

Zobrazit plný text záznamu

Akademický článek

Efficiency Determination of Compressor Embedded Induction Motors

Autor: Carlos A. C. Wengerkievicz, Cristian F. Mazzola, Nelson Sadowski, Nelson J. Batistela, Ernane Silva, Cesar J. Deschamps

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 20, Iss 3, Pp 658-674 (2021)

Abstract Compressors operating in refrigeration systems, typically with built-in induction motors, represent an important energy demand. The applicability of standard methods for efficiency determination of induction motors is limited in this context

Externí odkaz: https://doaj.org/article/9892d53b6a54469780b5e56464d1e469

Zobrazit plný text záznamu

Akademický článek

Wound rotor doubly fed induction machine with radial rotary transformer

Autor: Maurício Ruviaro, Fredemar Rüncos, Nelson Sadowski

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 12, Iss 2, Pp 411-426

This paper shows a wound rotor doubly fed induction machine in which the typical brushes and slip-rings are substituted by rotary transformers. The advantages of rotary transformer usage, the doubly fed induction machine operation and the dimensionin

Externí odkaz: https://doaj.org/article/0bd7e9cd565f4c43897e4077611435e9

Zobrazit plný text záznamu

Akademický článek

An Improved Method for Acquisition of the Parameters of Jiles-Atherton Hysteresis Scalar Model Using Integral Calculus

Autor: Filomena Barbosa R. Mendes, Jean V. Leite, Nelson J. Batistela, Nelson Sadowski, Fredy M. S. Suárez

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 16, Iss 1, Pp 165-179

Abstract An accurate modeling of materials is essential to obtain reliable results in fields calculation. The Jiles-Atherton approach is widely used for modeling the magnetic hysteresis and depends on its set of five parameters to properly represent

Externí odkaz: https://doaj.org/article/e2bf6b27ced345dca2487be50460260c

Zobrazit plný text záznamu

Akademický článek

Estimation of Three-Phase Induction Motor Equivalent Circuit Parameters from Manufacturer Catalog Data

Autor: Carlos A. C. Wengerkievicz, Ricardo de A. Elias, Nelson J. Batistela, Nelson Sadowski, Patrick Kuo-Peng, Sandro C. Lima, Pedro A. da Silva Jr., Anderson Y. Beltrame

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 16, Iss 1, Pp 90-107

Abstract The single phase equivalent circuit is largely used to model the three-phase induction motors in steady-state operation and under sinusoidal balanced voltages. Depending on the desired application, the circuit may or may not represent core l

Externí odkaz: https://doaj.org/article/b8c15202f6034693834e31bb675bb5a8

Zobrazit plný text záznamu

Akademický článek

Comparison and Combination of Techniques for Determining the Parameters of a Magnetic Hysteresis Model

Autor: Filomena B. R. Mendes, Jean V. Leite, Nelson J. Batistela, Nelson Sadowski, Fredy M. S. Suárez, João P. de Barros Neto

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 18, Iss 3, Pp 408-426

Abstract The Jiles-Atherton scalar hysteresis model presents five parameters used to represent the material tested and used to calculate the magnetic losses. This article presents a comparative analysis of the performance of two methods of identifyin

Externí odkaz: https://doaj.org/article/8e9b75836db64fe2a70101260cb70f62

Zobrazit plný text záznamu

An Analysis of Minor Hysteresis Loops Behavior under PWM Voltage - Electromagnetic Device at No-Load and Loaded Conditions

Autor: Nelson Jhoe Batistela, Guilherme Hosoda Souza Reis, Carlos A. C. Wengerkievicz, Ricardo De Araujo Elias, João P. A. Bastos, Nelson Sadowski

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 20, Iss 4, Pp 745-762 (2021)
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Volume: 20, Issue: 4, Pages: 745-762, Published: 15 NOV 2021
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.20 n.4 2021
Journal of Microwaves. Optoelectronics and Electromagnetic Applications
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)
instacron:SBMO

This paper addresses the influence of the primary and secondary resistances on the behavior of minor hysteresis loops when the electromagnetic device is fed by three-level PWM (pulse width modulation) voltage. To study the device transferring energy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbdbdccd2e46c71e08c63804ac4cc3d6
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742021000400745&tlng=en

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání