APU - Inverter ??

Because an apu is putting out dc power. An apu generates electricity. An inverter converts it from dc to ac.

 

Some APU's actually have an AC output (generator) from them. Our fleet does. However some companies [like ours] don't want to provide the AC outlet in the sleeper because then they find drivers want to run the APU 24/7 when parked, which puts unnecessary wear and tear and fuel burn on them. So, they run a sizable inverter that also works to power most things, but without the need to run the APU.

 

Someone told me they had an inverter that was capacitors or batteries only. Anybody have one of these?

 

There's is an "all battery" system but they suck for extended periods beyond about 12 hours requiring heating or cooling

 

I had a truck with the battery driven APU. it has perks but I think its really best for a team on those short stops. mine did fine for about 9 hours at a time then the truck would have to start to charge the system.

 

Carrier ComfortPro APU has 6kw AC generator belted to the engine..