DerpsyDoodler
Solar Addict
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- Jan 10, 2021
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how much?SO then who wants to buy a nice dewey 24v dc generator? 8 hrs of use, electric start. diesel single cylinder yanmar
how much?SO then who wants to buy a nice dewey 24v dc generator? 8 hrs of use, electric start. diesel single cylinder yanmar
What are the specs? i know diddly poop about dc generators.how much?
These Yanmar diesel generators are commonly used in the marine environment and as such are far more rugged than consumer generators, They are direct drive in that the generator has a female tapered shaft which directly couples to the tapered shaft on the engine. Not always but sometimes a prosperity taper is used which makes it hard to adapt engine to other uses. I have a few great honda engines from dead generators which do have a honda specific taper that i cannot find any pulley or coupling that will fit. Unfortunately honda generators do not outlast the honda engine.What are the specs? i know diddly poop about dc generators.
The spec sheetWhat are the specs? i know diddly poop about dc generators.
yesHave you had the generator running?
If I had two 24v dc generators of the same output could i wire them in series to get 48v to charge the batteries?A DC generator produces DC directly
An Alternator produces AC which is then rectified to DC with diodes, Most common alternators are three phase AC at a variable frequency which is directly related to the r.p.m. of the Alternator.
An AC generator produces AC directly from the coils, the frequency of the AC is directly related to the shaft speed and the number of coils on the generator.... Common AC generators are 3600 r.p.m. or 1800 r.p.m. depending on the number of coils , 2 or 4 are most common
Honda Inverter generators are a hybird.....they are 3 phase alternator (AC) which is rectified to DC at about 80 volts which is then used to power the inverter to make the AC. So they are AC converted to DC then back to AC.
The advantage is frequency output is not directly coupled to the R.P.M. of the engine.....thus the inverter generators change speed to be more effecient which a AC generator cannot do as frequency is directly related to r.p.m.
the frequency of the alternator is directly related to the speed of the engine, the frequency of the inverter is derived from the logic in the alternator. They do not need to be the same.
Now you're talking about useable power, but...at what point would you be better off just getting a single 120v ac generator?If I had two 24v dc generators of the same output could i wire them in series to get 48v to charge the batteries?
Yep, just buy a inverter generator for battery charging and do get a “pfc” charger to go with it. A non “pfc” “phase <EDIT strike that word, its power factor corrected> battery charger can only use approx 50 % of generator power while a “phase <power factor corrected> ” device can use >95% of available power.Now you're talking about useable power, but...at what point would you be better off just getting a single 120v ac generator?
What does "pfc" stand for and what does it mean?Yep, just buy a inverter generator for battery charging and do get a “pfc” charger to go with it. A non “pfc” “phase corrected“ battery charger can only use approx 50 % of generator power while a “phase corrected” device can use >95% of available power.
Thanks for the explanation. My brain crumpled when I first read it. The video really helped me make sense of it.Really just part of the equation but the first description is somewhat valid as well.
So how about something simple like.... 24v--> DC to AC inverter --> AC to 48v charger? Simple and cheap.The generator is DC........IT does not generate AC.......Transformers are AC.....NOT DC The only way to change voltage on DC is a inverter or buck-boost converter....or change the generator.....very expensive.