IEEE Power & Energy Magazine - Spanish - January/February 2020 - 91

historia

Harold Kirkham

75 años de sentido
el cambio de significado del fasor

S

SEGÚN EL DICCIONARIO OXFORD
English Dictionary (OED), la palabra
fasor fue introducida deliberadamente en la ingeniería para reemplazar la
palabra vector, de modo que vector
pudiera conservarse para aplicaciones
en campos electromagnéticos. (Tenga
en cuenta que los diccionarios no imponen las palabras que la gente debe
usar; describen las palabras que la gente usa). Uno de los tantos placeres al
momento usar el OED es que también
incluye citas de los primeros usos de
las palabras.
Dichos cambios en el significado
de las palabras no suelen ser deliberados. La modificación fue sugerida
en "A Note on Frequency Modulation Terminology" (Una nota sobre la
terminología de la modulación de la
frecuencia) por Harry Stockman del
Crufts Laboratory y Gunnar Hok del
Radio Research Laboratory, ambos
de la Universidad de Harvard. [Era el
año 1944, y la modulación de frecuencia (MF) era la gran novedad. La nota
fue impresa en la correspondencia del
Institute News and Radio Notes del
Proceedings of IRE del año 1944. La
principal preocupación de Stockman y
Hok era que los términos modulación
de frecuencia y modulación de fase no
se utilizaban con precisión (debido al
preénfasis dependiente de la frecuencia utilizada en los transmisores de la
MF). En su análisis, escribieron: "La
velocidad angular instantánea del fasor
Identificador de Objeto Digital 10.1109/MPE.2019.2945102
Fecha de la versión actual: 7 de enero de 2020

enero/febrero 2020	

En la columna "Historia" de esta edición, exploramos el cambio de significado
de fasor con una perspectiva de 75 años de sentido. El concepto de fasor tiene
implicaciones modernas, dada la proliferación de los fasores en los sistemas de
potencia de hoy en día para una amplia variedad de aplicaciones de monitoreo
y control. Damos la bienvenida a Harold Kirkham por primera vez a estas páginas de "Historia" de la IEEE Power & Energy Magazine. Es un Fellow vitalicio
del IEEE y actualmente trabaja para el Pacific Northwest National Laboratory
(PNNL) en Richland, Washington, donde investiga los sistemas de medición
de redes inteligentes y fasores. Su historia profesional incluye un tiempo en el
Edison Electric Institute, donde trabajó con CC de alta tensión, y en American
Electric Power, donde se enfocó en el diseño de líneas de ultra alta tensión.
Antes de ingresar al PNNL, trabajó en el Jet Propulsion Laboratory. Allí trabajó
en la automatización de la distribución (un precursor de la red inteligente), investigando la comunicación, el control y las mediciones de la distribución. Dirigió el proyecto de potencia NEPTUNE para llevar potencia a lugares de ciencia
submarina. Además, trabajó en sistemas y mediciones de alta tensión.
John Paserba
Editor Asociado, "Historia"

de tensión puede, en un caso especial
de interés particular..." con un pie de
página que decía
Se prefiere el término "fasor"
para el vector, cuyo uso podría
así reservarse exclusivamente
en el análisis vectorial. El término "fasor" es utilizado por el
Instituto Estadounidense de Ingenieros Eléctricos. Podría ser
interesante mencionar que los
ingenieros europeos han estado
utilizando durante muchos años
un término, cuya traducción
sería "puntero" (refiriéndose al
puntero o la manecilla de un
medidor o un reloj).

(Si bien Stockman y Hok indicaron que
la palabra ya se usaba en 1944, IEEE
Xplore no arrojaba ninguna coincidencia para la palabra hasta 1951). Los autores concluyen lo siguiente:
Las reflexiones que aquí se
presentan tienen como objetivo
proporcionar una base común
para el debate. Se produce mucha controversia y confusión
cuando un nuevo campo que
está en rápido desarrollo toma
prestadas palabras de un lenguaje común sin definir explícitamente los nuevos conceptos
que deben abarcar. Las definiciones básicas deben cumplir
ieee power & energy magazine 	

91



IEEE Power & Energy Magazine - Spanish - January/February 2020

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - Spanish - January/February 2020

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