Inverter
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01-08-2007, 23:35
Post: #29
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Inverter
the whine is the engineer complaining
Stpehen mac70 and ac4400 --- In WanderlodgeForum@yahoogroups.com, Pete Masterson wrote: > > Some electrified rail systems capture the energy from dynamic braking > (using the DC drive motors as generators) to return power to the > system. However, the equipment is expensive and heavy. > > Diesel-electric locomotives also have dynamic braking - the DC drive > motors are wired to act as generators when going down grades. The > power is converted to heat via the biggest toaster grid you would > ever see. (Watch a railroad locomotive as it goes down a long grade > and you may see the 'heat waves' coming out on the top of the unit. > It will also have a characteristic dynamic brake whine if you're > within earshot.) > > BBs are pretty big, but not quite in the same category as > locomotives. The expense and electrical/mechanical complexity makes > recapturing the energy not cost effective. > > > Pete Masterson > aeonix1@... > '95 Blue Bird Wanderlodge WBDA 42' > El Sobrante, CA > > > > > On Jan 8, 2007, at 6:49 PM, Gregory OConnor wrote: > > > The drive line retarder uses power? You would think some one could > > build an electric alternator for an engine and drive line retarder > > that takes the energy of a stop and produces amps to store in a > > battery bank. Think of all the wasted effort it takes to hold back > > 40,000 lbs. > > > > [Non-text portions of this message have been removed] > |
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Messages In This Thread |
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Inverter - dspithaler@... - 01-07-2007, 03:51
Inverter - dspithaler@... - 01-07-2007, 05:07
Inverter - dspithaler@... - 01-07-2007, 07:01
Inverter - Gregory OConnor - 01-07-2007, 09:51
Inverter - sfedeli3 - 01-07-2007, 11:34
Inverter - Pete Masterson - 01-07-2007, 12:14
Inverter - David Brady - 01-07-2007, 12:42
Inverter - Wilhelmus Schreurs - 01-07-2007, 13:59
Inverter - Wilhelmus Schreurs - 01-07-2007, 14:12
Inverter - Tom Warner - 01-07-2007, 14:21
Inverter - birdshill123 - 01-07-2007, 14:35
Inverter - Wilhelmus Schreurs - 01-07-2007, 15:05
Inverter - Gardner Yeaw - 01-07-2007, 15:05
Inverter - dspithaler@... - 01-07-2007, 20:56
Inverter - Wilhelmus Schreurs - 01-08-2007, 03:43
Inverter - dspithaler@... - 01-08-2007, 05:12
Inverter - dspithaler@... - 01-08-2007, 09:34
Inverter - Wilhelmus Schreurs - 01-08-2007, 13:05
Inverter - Gregory OConnor - 01-08-2007, 14:49
Inverter - Stephen Birtles - 01-08-2007, 14:59
Inverter - Pete Masterson - 01-08-2007, 15:30
Inverter - Stephen Birtles - 01-08-2007 23:35
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