Consigned to Oblivion - Wind Power for the World: The Rise of Modern Wind Energy - page 377

Let us mention some more people who spent much energy
on developing the vertical-axis-type of wind turbine during the
1970s. Aluminord, a division of the biggest Danish manufacturer of
cables and wires, Nordisk Kabel og Tråd, made an ofer to extrude
aluminium profiles for Darrieus wind turbines. At the new test
station at Risø, engineers Troels Friis Petersen and Flemming
Rasmussen, could study their exam project Darrieus just outside
their windows.
At Nørgaards Højskole in Bjerringbro Arne Bech was working
at the egg beater, as the type was called among those in the know;
engineers V. Lassen Jordan and Per Ove Christensen were making
test windmills of this type as well. OVE veteran Ole Højland
and Søren Arthur Jensen of the Danish Maritime Institute were
doing examination projects on Darrieus windmills; Søren Arthur
continued to develop them far into the 1980s together with Morten
T. Jensen. At a convivial summer camp in 1976 in Hjerk, Salling,
engineer John Kvint led a project and built a 3-blade Darrieus
windmill, with wooden blades which were shaped during the
camp.
But all this did not lead anywhere. Despite the fact that actually
more well-educated, “real” engineers worked with Darrieus designs
than with the 3-bladed Danish concept, in a retrospective it can
be stated that it was not money, zeal or arithmetic competence
that decided the result. The 3-bladed upwind windmill with the
asynchronous generator was a better concept, technically and
economically.

16.12 The Phenomenon Borre

Engineer Niels Borre made the entire development and became a
legend. He developed a derivative of the Darrieus windmill with a
vertical axis and four perpendicular blades. Dansk Vindkraftindustri
in Slangerup was to produce it. The blades were straight as on the
old Persian windmills. The first Borre windmill was erected with
the electric utility EFFO in the autumn of 1977. Invitations for
a grand opening ceremony had been sent out, but the windmill
would not really get started in spite of an acceptable wind.