Paul Dvorak
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  • Strongsville, OH
  • United States
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Paul Dvorak's Friends

  • Frederico Nunes M. de Carvalho
  • Thomas A Hedger
  • Taylor Johnson
  • Eric Dolby
  • Paul Hofmeyer
  • DANIEL DE MOURA PRUDENTE
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Latest Activity

Frederico Nunes M. de Carvalho left a comment for Paul Dvorak
"thank you for the help. I will try to contact them. But I'm pretty sure about teh potential of the wind here. Fred"
Nov 9, 2009
Paul Dvorak and DANIEL DE MOURA PRUDENTE are now friends
Nov 8, 2009
Paul Dvorak commented on Marshall Matheson's group Windpower Exchange
"Mr. Querfeld: Can you tell us how the FPS sensor measures viscosity, density, and dielectric constant?"
Nov 2, 2009
Paul Dvorak replied to Ivan's discussion Careers in Wind power in Northern Italy in the group Windpower Exchange
"Dear Ivan: I did a quick search on wind in Italy and found: http://www.contractjournal.com/jobs/job/senior-sales-engineer-urgently-required-wind-industry-italy-italy-200583036.htm The company is looking for a sales engineer and that may give you a…"
Oct 23, 2009
Frederico Nunes M. de Carvalho and Paul Dvorak are now friends
Oct 21, 2009
Paul Dvorak and Paul Hofmeyer are now friends
Oct 21, 2009
Paul Dvorak left a comment for Frederico Nunes M. de Carvalho
"Dear Mr. de Carvalho: I think the best place to start would be with the turbine manufacturers in your area. GE, Vestas, Mitsubishi, and others should have offices near you. They will first want to make sure your land has enough wind for a…"
Oct 21, 2009
Paul Dvorak commented on Marshall Matheson's group Windpower Exchange
"Dear Mr. Dolby: I have few details on the market for thermal spray. As I recall, it's a hard thin coating for gears. The one other supplier of the coatings mentioned that most of their business comes from gear repairs because they also rebuild…"
Oct 21, 2009
Paul Dvorak replied to Rudy Kalkert's discussion Operator of wind farms in the group Windpower Exchange
"Mr. Kalkert: From my limited experience, getting power onto the grid is most difficult and according to one source in an upcoming story, it's getting worse. Grid owners are a separate group of investors. After that, reliability is a constant…"
Oct 14, 2009
Paul Dvorak and Taylor Johnson are now friends
Sep 29, 2009
Paul Dvorak commented on Paul Dvorak's blog post Phil's windmill page
"Hey Phil: Thanks for the explanation and insight, the very discouraging insight. Are the figures for solar power any more encouraging? Paul"
Sep 2, 2009
Paul Dvorak replied to Taylor Johnson's discussion WindPower Profitability and Break Even Point Calculations in the group Windpower Exchange
"Nice work, Tyler. We don't see enough accounting math of this sort. By listing the costs and charges, a wind farm owner, or other business person, knows what costs to minimizes and the figures to work on growing. You also begin to appreciate…"
Sep 2, 2009
Phillip Marsh commented on Paul Dvorak's blog post Phil's windmill page
"The typical urban windmill is sold to reduce your dependance on the utility grid. These windmills are advertized as producing 1 KW in a 30 MPH wind. A typical 1 KW PMA (permanent magnet alternator) will loose 50% of its produced power as heat in…"
Sep 2, 2009
Paul Dvorak commented on Marshall Matheson's group Windpower Exchange
"As a former Air Force weather observer (8th Weather Wing 1967-1968) I used to wonder how we might affect the weather being creatures that live at the bottom of a sea of air. The atmosphere is so vast and sun so powerful, the puny amounts of energy…"
Aug 26, 2009
Paul Dvorak replied to Jeff Hess's discussion Future scale of Windpower structure and components in the group Windpower Exchange
"Jeff: My cloudy crystal ball tells me two thing are likely to happen. For one, the turbines will continue getting larger because the economy of scale means more power from single units. Of course, there are limits, and they will be periodically…"
Aug 26, 2009
Paul Dvorak posted a blog post

Phil's windmill page

Hey Phil:How about a little more electrical explanation for us mechanical engineers? For instance, call out the items in the circuit diagram and tell what they do. The PMA is axial flux dual-rotor design. So.. output is variable dc? What does the rectifier do? How does the inverter work? In your proverbial spare time, of course.Thank,PaulSee More
Aug 10, 2009

Profile Information

Company
WTWH Media LLC
Job Title
Senior Online Editor
Industry
Windpower
Company Website
http://windpowerengineering.com
I'm Looking For:
Peer Feedback
Personal Interests
Bicycling, golf, gardening, reading, travel

Paul Dvorak's Blog

Phil's windmill page

Posted on August 10, 2009 at 4:27pm 2 Comments

Hey Phil:

How about a little more electrical explanation for us mechanical engineers? For instance, call out the items in the circuit diagram and tell what they do. The PMA is axial flux dual-rotor design. So.. output is variable dc? What does the rectifier do? How does the inverter work? In your proverbial spare time, of course.

Thank,
Paul

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At 7:56pm on November 9, 2009, Frederico Nunes M. de Carvalho said…
thank you for the help. I will try to contact them. But I'm pretty sure about teh potential of the wind here.
Fred
 
 
 

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