Modelling Structural Flexure Effects in CPV Sun Trackers

Nowadays CPV trends mostly based in lens parqueted flat modules, enable the separate design of the sun tracker. To enable this possibility a set of specifications is to be prescribed for the tracker design team, which take into account fundamental requisites such as the maximum service loads both permanent and variable, the sun tracking accuracy and the tracker structural stiffness required to maintain the CPV array acceptance angle loss below a certain threshold. In its first part this paper outlines the author’s approach to confront these issues. Next, a method is introduced to estimate the acceptance angle losses due to the tracker’s structural flexure, which in last instance relies in the computation of the minimum enclosing circle of a set of points in the plane. This method is also useful to simulate the drifts in the tracker’s pointing vector due to structural deformation as a function of the aperture orientation angle. Results of this method when applied to the design of a two axis CPV pedestal tracker are presented.

Selective injection of magnetic domain walls in Permalloy nanostripes

Selective injection of magnetic domain walls in Permalloy nanostripes

Das Werder- und Acht-Buch der Stadt Eisleben, aus der ersten Hälfte des 15. Jahrhunderts.

"Beilage zum Programm des Königlichen Gymnasiums zu Eisleben."

Abhandlungen der Naturforschenden Gesellschaft zu Görlitz.

Maps for v. 8 in portfolio (with the society's publication).

Biblia pauperum,

Mode of access: Internet.

Die Homöopathie in ihren Widersprüchen : aus Dr. Hahnemanns eignen Schriften bewiesen /

Mode of access: Internet.

Ad Examen anniversarium D. XXX. et XXXI Mensis Augvsti et D. I. Mensis Sept. invitat C.J. Blochmann, Rector. Praemissum est: F.G. Wagneri, "De Graecae Poesis Indole et Praestantia" Commentariolum.

Mode of access: Internet.

Historische nachricht von der öffentlichen bibliotheqve des Fürstl. gymnasii zu Eisenach. nebst einem Discours von einigen in den chur- und fürstl. sächsischen landen befindlichen öffentlichen bibliotheqven.

"The "Discours" has separate t.-p. and pagination.

Description raisonnée du trésor royal saxon, dit le "Grüne gewölbe.." /

Includes bibliographical references.

Bericht ...

Reprinted from: Dresden. K. Tierärztliche Hochschule. Bericht, [neu folge 1, 2, 4, 6,].

Bericht über das Veterinärwesen im Königreiche Sachsen für ... /

Latest issue consulted: 1905.

Die Sächsische Bank 1865-1911 : ein Beitrag zur Notenbankfrage in Deutschland /

Includes bibliographical references (page v (1st count)).

Entomologische Nachrichten ...

Vol. 6 includes the separately paged section "Literurische revue der Entomologischen nachrichten.

Entomologische Nachrichten.

Mode of access: Internet.

Statistisches Jahrbuch.

18-20. jahrgang, 1916-18, issued together; 21-23. jahrgang, 1919-1921, issued together.