A novel concept of unidirectional bridgeless combined boost-buck converter for EV battery chargers

This paper presents a novel concept of unidirectional bridgeless combined boost-buck converter for electric vehicles (EVs) battery chargers. The proposed converter is composed by two power stages: an ac-dc front-end converter used to interface the power grid and the dc-link, and a dc-dc back-end converter used to interface the dc-link and the batteries. The ac-dc converter is a bridgeless boost-type converter and the dc-dc converter is an interleaved buck-type converter. The proposed converter operates with sinusoidal grid current and unitary power factor for all operating power levels. Along the paper is described in detail the proposed converter for EV battery chargers: the circuit topology, the different stages describing the principle of operation, the power control theory, and the current control strategy, for both converters. Along the paper are presented several simulation results for a maximum power of 3.5 kW.

Robust current control of a phase shifted full-bridge buck converter

In this thesis, the main point of interest is the robust control of a DC/DC converter. The use of reactive components in the power conversion gives rise to dynamical effects in DC/DC converters and the dynamical effects of the converter mandates the use of active control. Active control uses measurements from the converter to correct errors present in the converter’s output. The controller needs to be able to perform in the presence of varying component values and different kinds of disturbances in loading and noises in measurements. Such a feature in control design is referred as robustness. This thesis also contains survey of general properties of DC/DC converters and their effects on control design. In this thesis, a linear robust control design method is studied. A robust controller is then designed and applied to the current control of a phase shifted full bridge converter. The experimental results are shown to match simulations.

President G. T. "Buck" Smith presents Irvin C. "Ernie" Chapman with 50th year diploma at Commencement, 1983

President G. T. "Buck" Smith presents Irvin C. "Ernie" Chapman with 50th year diploma at Commencement, Chapman College, Orange, California, May 29, 1983.

George Argyros, Betty Hutton, and G. T. "Buck" Smith at the dedication of Hutton Sports Center

George Argyros, Betty Hutton Williams, and G. T. "Buck" Smith at the dedication of Hutton Sports Center, 219 E. Sycamore St., Chapman College, Orange, California, on Founders' Day, November 10, 1979. The Harold Hutton Sports Center, completed in 1978, is named in honor of this former trustee, and made possible by a gift from his widow, Betty Hutton Williams.

La educación en las novelas de Jean Marie de Buck.

Estudiar en las obras 'Dios hablará esta noche' y 'El silencio de un adolescente' de Jean Marie de Buck. Las principales ideas pedagógicas contenidas en estas novelas se reducen a: realismo pedagógico. El educando tiene múltiples posibilidades y la educación actuando sobre ellas produce resultados positivos. Por estos motivos, hay que mantener en el adolescente un alto nivel de exigencia en los aspectos personal, social y trascendente. La educación es una obra que se tiene que llevar a cabo en común entre el educando y los distintos educadores que le ayudan. Dios habla a través de las personas, de las cosas de los acontecimientos. Hay que fomentar en el educando una disposición de apertura al mensaje que se le dirige y que únicamente él puede realizar.

Pedagogía de J. M. de Buck.

Señalar que J. M. de Buck en su vida y en su obra es un auténtico pedagogo. El autor hace una critica bastante dura de la burguesia, presenta una burguesia que teme el esfuerzo físico, que abusa de la comodidad, que no sabe adaptarse a una ley de acción y que vive refugiado en su orgullo de casta. En esto mismo algunas veces se contradice, en su novela 'Dios hablará esta noche' demuestra lo contrario, comprobamos que no todos estos chicos carecen de carácter y de dominio. Subraya la importancia de la formación de los padres. Se excede quizá al acusarlos siempre de ser la causa de los fracasos. Trata bastante superficial lo referente al adolescente en su evolución, no puntualiza bien. Pasa por alto la educación sexual, siendo uno de los problemas que presentan mayor dificultad a esta edad. La educación estética, aunque no la estudia por separado, la encontramos a lo largo de toda la novela, de manera especial en 'Dios hablará esta noche'. Aunque su obra no es un tratado cientifico su pedagogía convence porque está al alcance de todos, es sencilla y facilmente aplicable. Insiste en la importancia de una buena educación inicial, de donde se deduce la necesidad de formación en los padres. El factor determinante principal es el ambiente familiar. La familia es la que consolida y complementa la inteligencia y todo cuanto de social hay en la educación. Se nota la importancia que da a la educación social en la adolescencia. En cuanto al educador señala como indispensable el principio del ser. Para educar no basta saber, es necesario ante todo ser. Interés del método psicopedagogico y de la necesidad del médico para la educación no sólo de anormales sino también de los normales. Insiste en la educación positiva más que represiva: em la política de relación y de persuasión para dirigir al adolescente.

Dancy on buck passing

I defend the buck-passing account of value from Dancy's critique.

The buck passing account of value: assessing the negative thesis

The buck-passing account of value involves a positive and a negative claim. The positive claim is that to be good is to have reasons for a pro-attitude. The negative claim is that goodness itself is not a reason for a pro-attitude. Unlike Scanlon, Parfit rejects the negative claim. He maintains that goodness is reason-providing, but that the reason provided is not an additional reason, additional, that is, to the reason provided by the good-making property. I consider various ways in which this may be understood and reject all of them. So I conclude that buck-passers cannot reject the negative claim.

Controle Robusto Aplicado a Conversor Buck-Boost em Sistemas Fotovoltaicos

The need to implement a software architecture that promotes the development of a SCADA supervisory system for monitoring industrial processes simulated with the flexibility of adding intelligent modules and devices such as CLP, according to the specifications of the problem, it was the motivation for this work. In the present study, we developed an intelligent supervisory system on a simulation of a distillation column modeled with Unisim. Furthermore, OLE Automation was used as communication between the supervisory and simulation software, which, with the use of the database, promoted an architecture both scalable and easy to maintain. Moreover, intelligent modules have been developed for preprocessing, data characteristics extraction, and variables inference. These modules were fundamentally based on the Encog software

A comparative study of MPPT strategies and a novel singlephase integrated buck-boost inverter for small wind energy conversion systems

This paper presents the analysis of some usual MPPT (Maximum Power Point Tracking) strategies intended for small wind energy conversion (up to 1kW) based on permanent magnet synchronous generators (PMSG), considering the stand-alone application for a novel buck-boost integrated inverter. Each MPPT method is analytically introduced and then it is simulated using MatLab/Simulink considering standard conditions of wind and also commercially available turbines and generators. The extracted power in each case is compared with the maximum available power, so the tracking factor is calculated for each method. Thus, the focus is on the application to improve the efficiency of stand-alone wind energy conversion systems (WECS) with battery chargers and AC load supplied by inverter. Therefore, for this purpose a novel single phase buck-boost integrated inverter is introduced. Finally, the main experimental results for the introduced inverter are presented. © 2011 IEEE.