inverter generators
in [Design]
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From: Tim Williams on 22 Jun 2010 19:53 "Joel Koltner" <zapwireDASHgroups(a)yahoo.com> wrote in message news:dH8Un.465892$Vq1.79582(a)en-nntp-03.dc1.easynews.com... > > ...Of course, then your 120/240V switchable supplies all croak, which is > > still most computers. > > Many such supplies will work off of high-voltage DC directly, I'm told. But it has to be 320VDC, not 160. Actually, that'll probably blow one capacitor (and might reverse the other one!). I can't imagine PFC supplies would have a problem, though some controllers may get confused without AC input. If they stop PFC-ing, voltage drops out and you get the same problem as before. Most of those run at 400VDC link, so you'd need even more in that case. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: Tim Williams on 22 Jun 2010 19:54 *Cough*, homopolar generator? Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms "Bruce in alaska" <fast(a)btpost.net> wrote in message news:fast-CF3FEF.11475022062010(a)unknown.hwng.net... > Hey Guys, Just a NOTE here: ALL Electrical Generators produce their > power in AC, PERIOD. What you think of as DC Generators have Commutators > that convert the AC from the windings, mechanically to DC, coming off > the Commutator Brushes.
From: Jim Wilkins on 22 Jun 2010 20:01 On Jun 22, 3:47 pm, Bruce in alaska <f...(a)btpost.net> wrote: > Jim Wilkins <kb1...(a)gmail.com> wrote: > .... > Hey Guys, Just a NOTE here: ALL Electrical Generators produce their > power in AC, PERIOD. What you think of as DC Generators have Commutators > that convert the AC from the windings, mechanically to DC, coming off > the Commutator Brushes. In the Inverter/Generator case, the Main Genend > Windings, are 3 Phase AC that is rectified, to DC and then feed into the > DC input of the Main 60 Hz Inverter. If the load Power is more than the > DC Input to the Inverter Section then the CPU Controller ramps up the > Throttle on the Engine to provide the required Power for the load. this > way the engine only provides just enough power to satisfy the load on > the output of the inverter, thus saving fuel, and machinery wear. Great > concept but give me a nice old Diesel 1800 RPM Genset any day. > Bruce in alaska Good, concise summary! I never know how much detail to put in, too little and some stickler bitches, too much and the only ones who can follow, already know. jsw
From: m II on 22 Jun 2010 20:04 Tim Williams wrote: > *Cough*, homopolar generator? Let's not get too cute. A comb or rug can generate DC electricity too. Tesla cured us of the DC habit. mike
From: Jim Wilkins on 22 Jun 2010 20:19
On Jun 22, 4:27 pm, "amdx" <a...(a)knology.net> wrote: > ... > For what it's worth, Yamaha make an EF1000 and an EF1000iS > Nowhere in the manual below do I see the words inverter generator, > ... That's because the phrase is "inverter control unit", which is the blank box in the middle of the schematic that the 3 phase AC goes into and the single phase AC comes out of. Look under "Overload Indicator Light". You normally don't read manuals until you've bought the product, if even then, so they are free of marketing department foofoo. I have to write some sort of manual for most everything I design. jsw |