inverter generators
in [Design]
|
From: amdx on 22 Jun 2010 07:57 Hi All, I want a definition of "inverter generator" Is it as simple as the generator generates a DC voltage and then an electronic circuit (inverter) uses the dc to make 60 hz AC? Or maybe the generator generates AC which is changed to DC and then back to (cleaner, inverter) AC. Mike
From: Jim Wilkins on 22 Jun 2010 08:49 On Jun 22, 7:57 am, "amdx" <a...(a)knology.net> wrote: > Hi All, > I want a definition of "inverter generator" > > Is it as simple as the generator generates a DC voltage and then > an electronic circuit (inverter) uses the dc to make 60 hz AC? > > Or maybe the generator generates AC which is changed to DC and > then back to (cleaner, inverter) AC. > > Mike This is the manual for the Yamaha EF1000: http://www.yamaha-motor.com/assets/service/manuals/0/LIT-19626-01-19_1109.pdf The schematic at the end shows two three-phase permanent magnet alternators (1,2) which presumably are rectified to DC and then inverted to 60Hz AC. I haven't worked on one of these generators but motorcycles use those alternators. I would guess that one of the alternators must put out enough voltage at idle, the other is more efficient at high speed. The stepping motor (21) might control the throttle. The bottom part of the schematic is the engine ignition. jsw
From: Cydrome Leader on 22 Jun 2010 12:15 In sci.electronics.design amdx <amdx(a)knology.net> wrote: > Hi All, > I want a definition of "inverter generator" > > Is it as simple as the generator generates a DC voltage and then > an electronic circuit (inverter) uses the dc to make 60 hz AC? > > Or maybe the generator generates AC which is changed to DC and > then back to (cleaner, inverter) AC. > > Mike I'm not sure on what exactly goes on inside them, but the idea is that you can maintain a stable output frequency over a range of engine speeds. with a normal genset, you must run the engine at a fixed speed, even if there's no load which wastes fuel. Also, an alternator running at higher speeds can be smaller than one running slower.
From: amdx on 22 Jun 2010 12:16 "Jim Wilkins" <kb1dal(a)gmail.com> wrote in message news:b8c12d7e-1dd3-48f0-8608-37f92cac63c2(a)u7g2000yqm.googlegroups.com... On Jun 22, 7:57 am, "amdx" <a...(a)knology.net> wrote: > Hi All, > I want a definition of "inverter generator" > > Is it as simple as the generator generates a DC voltage and then > an electronic circuit (inverter) uses the dc to make 60 hz AC? > > Or maybe the generator generates AC which is changed to DC and > then back to (cleaner, inverter) AC. > > Mike This is the manual for the Yamaha EF1000: http://www.yamaha-motor.com/assets/service/manuals/0/LIT-19626-01-19_1109.pdf The schematic at the end shows two three-phase permanent magnet alternators (1,2) which presumably are rectified to DC and then inverted to 60Hz AC. I haven't worked on one of these generators but motorcycles use those alternators. I would guess that one of the alternators must put out enough voltage at idle, the other is more efficient at high speed. The stepping motor (21) might control the throttle. The bottom part of the schematic is the engine ignition. jsw Thanks for the schematic, although I didn't get an answer. Item #5 the control unit could have rectifiers and an inverter on it, but I suspect it just as it is labeled, control unit- it controls the engine speed depending on load. Thanks, Mike
From: z on 22 Jun 2010 12:24
"amdx" <amdx(a)knology.net> wrote in news:7e429$4c20a4ff$18ec6dd7$4746 @KNOLOGY.NET: > Hi All, > I want a definition of "inverter generator" > > Is it as simple as the generator generates a DC voltage and then > an electronic circuit (inverter) uses the dc to make 60 hz AC? > > Or maybe the generator generates AC which is changed to DC and > then back to (cleaner, inverter) AC. > > Mike > > Here is the EU2000 diagram http://www.homebrewhydro.com/eu2000/eu2000_diagram.jpg with a paragraph at the bottom: Operating Principles describes what's going on in there. |