Gensets specifically for hybrid power sail (mono & multi)

Discussion in 'Hybrid' started by masalai, Mar 28, 2008.

  1. CTMD
    Joined: Dec 2007
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    CTMD Naval Architect

    Archim, reduced voltage is going to eat into both your system and proposulsion efficiency.
     
  2. Archim
    Joined: Apr 2008
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    Archim Junior Member

    Yes, I am not far from being convinced that the 144vDC system from David Tether is the most efficient hybrid DE on the market currently. Maybe the reason why Calder chosed to install an eMotion motor in his new Malo. I'll sleep on it...
     
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  3. Pericles
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    Pericles Senior Member

  4. Archim
    Joined: Apr 2008
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    Archim Junior Member

    ASMO motors

    Pericles,

    ASMO use Lynch motors. Although ASMO state that their motors are 'up to 93%' efficient, this is likely to be for the 72 V Thoosa 13000 motor, at peak efficiency -which generally is a half the rated duty. As seen above, the efficiency of brushed motors and controllers can drop down sharply when speed hence voltage go down. It is a pity those dealers do not give the overall efficiency of their systems at various rpm.

    Also, the Lynch motors are rated IP 20 so I don't know whether ASMO does anything particular to tropicalise them, or if they have to be installed in an immaculately dry and clean environment.

    JC
     
  5. masalai
    Joined: Oct 2007
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    masalai masalai

    For a start, this can go here SOLAR PANELS - NEW DEVELOPMENTS

    http://www.abc.net.au/news/stories/2008/05/29/2258722.htm
    UQ makes solar-power 'breakthrough'

    Queensland researchers say they have made a major breakthrough in renewable energy technology.

    Professor Max Lu from the University of Queensland says they have been able to grow titanium oxide crystals, which could be used in solar power cells and water purification and recycling devices.

    He says the material is cheap and easy to produce and it will make solar energy more cost-effective.

    "The promise of such a crystal is, because it's such a high-reactivity surface that we're creating, they will enable the boosting of efficiency in terms of solar energy conversion to electricity," he said.

    "In other words, if this can be made into a solar cell it is going to be much more efficient."

    He says the technology will make solar power more cost-effective, but concedes that it is up to 10 years away from being commercially available.

    "This has shown great promise. The prospect of this in the area of renewable energy is huge," he said.
     
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  6. masalai
    Joined: Oct 2007
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    Location: cruising, Australia

    masalai masalai

  7. masalai
    Joined: Oct 2007
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    Location: cruising, Australia

    masalai masalai

    Jeff (moderator),
    Is there any way to correct the last line in the first post of this thread as it no longer has a link to go to???
    If the link cannot be repaired then could that last line be deleted?
    Thanks mas...
     
  8. masalai
    Joined: Oct 2007
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    Location: cruising, Australia

    masalai masalai

    A Bob Oram 44'C is due to be launched in April 2009 with "glass/composite legs made by builder and Re-e-power motors and PolarPower Volvo-penta driven "disk" generator giving 11KW and 22KW in parallel with the batteries....

    I am looking at the Torqeedo 2000R legs (either 2 or 4) for my Bob Oram 39'C (no regen as yet but price and weight are good) and build commencement in April 2009.. I have opted for 24v DC system for house & drive and 12v for ship, nav & diesel genset start/management - - - all is not 'set in concrete' yet, as dual 24v systems have a point in redundancy/backup...

    Another 44'C is closer to build completion than mine has ordered a pair of torqeedo 4000R legs, batteries, solarpanel system & controller package - this will be the 6th Bob Oram designed boat he has built and will be for himself....

    http://www.torqeedoaustralia.com/Torqeedo_Australia/Products.html there should be links back to find your local distributor - else just google "torqeedo" ...

    I am trying to get info on these sites offerings http://www.adelaidesolar.com.au/page?pg=18 and http://www.onsitepower.com.au/products/marine/dc722m.htm
     
  9. marmotte
    Joined: Mar 2010
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    Location: Suisse

    marmotte New Member

  10. masalai
    Joined: Oct 2007
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    Location: cruising, Australia

    masalai masalai

    Man, this thread is over a year dead???

    Genset similar to theirs, (polarpower), is on "Schools' Out", (a recently launched Oram sailing cat), using a Volvo 2 cylinder engine direct coupled with the electrics from a US coy that went quiet or bust... Polar power is bloody expensive here in Australia, I used a Kubota 3 cyl marinised engine from http://seawasp.com.au/index.html and a pair of Delco 20 pole alternators to give 48 volt and a peak charge of around 6000W... The Delco's are belt drive...

    The Genset and 8 solar panels rated at 200W each will help to charge up to 16 spiral wound Optima D34M AGM batteries to give 220A at 48VDC to power 2 x 4000W 48V Torqeedo electric "outboard motors weighing in at less than 17KG each... Galley is all electric using inverters to deliver domestic power (220VAC in Australia) so I can run normal Australian domestic appliances...

    I figure on less than one hour running the genset each day, - less on a good sunny day in the tropics, and to kick the genset in if I need to motor any distance... My boat will be launched 'soon'...
     

  11. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    FOR A BIG ALT '

    DELCO 50 DN 270 AMP 24 VDC ALT

    These are avilable rebuilt for about $500 or so.

    FF
     
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