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--- electrical:generator [2023/09/23 13:22]
frater_secessus [cooling]
+++ electrical:generator [2023/09/23 13:39] (current)
frater_secessus [inverter generators]
@@ Line 15: / Line 15: @@
 ===== inverter generators =====
-Standard generators run the engine at a specific speed to output stable power.  Things that affect RMP (load changes, etc) will affect the output.
+To understand the theoretical benefits of inverter generators we have to know how standard generators work.
-[[https://amzn.to/46oVNLI|Inverter generators]] adjust engine output to meet power demand, and run a more complex/$$ AC->DC-> AC process to ensure steady output at any RPM.  As a result //at lower power levels// inverter generators can be considerably quieter and use less fuel than standard generators.  //At maximum rated power// the noise and fuel consumption will be similar.
+**Standard generators** run the engine at a specific speed to get a stable 60Hz((in the U.S.)) output frequency.
+> Typically, a United States portable generator runs at 3600 RPM, with 2 poles, for a design frequency of 60Hz.((https://electronics.stackexchange.com/questions/109378/generator-speed-and-power-output-frequency))
+Things that affect RPM (load changes, etc) will affect the output and can cause "dirty power" (varying frequency).
+> You get fluctuation of frequency and voltage as the load changes because the engine cannot respond immediately to the actual load change. There are regulators controlling the engine throttle that attempt to keep the engine at a fixed (design) speed, but it takes time for the engine to respond to new commands as it has to deal with varying fuel/air mixtures and combustion which aren't instantaneous.((https://electronics.stackexchange.com/questions/109378/generator-speed-and-power-output-frequency))
+[[https://amzn.to/46oVNLI|Inverter generators]] reduce engine RPM for lower power demand, then use a more complex((and $$)) AC-> DC-> AC setup to ensure steady output regardless of engine RPM.(("ECO" modes tend to run around 3,000rpm))  As a result inverter generators
+  * output highly-consistent and stable power.  This is unrelated to the [[electrical:inverter#msw_and_electronics|the PSW vs MSW inverter issue]]; all generators output Pure Sine Wave because they make power from a spinning source.
+  * can be considerably quieter and use less fuel than standard generators //at lower power levels//.
+  * will make the ~same noise and have the ~same fuel consumption as standard gens //at maximum rated power//
+  * are typically lighter than standard gens, due to different internal design
+  * are typically more expensive than standard gens
-**Notes**:
-  * inverter vs standard generators are unrelated to [[electrical:inverter#msw_and_electronics|the PSW vs MSW inverter issue]].  All portable generators output Pure Sine Wave because they make power from a spinning source.
-  * Due to their different internal design inverter generators are often much lighter for the same output rating.
 ===== etiquette =====
 It is common to leave generators quiet in times of darkness, and to not run them when close to other campers.

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