Solution for shoreline to 50Hz 100V

Well I do need my AC. Hot summer days here in Japan may hit 110*F outside. Inside my camper: Well done. I ran the AC in my old Winnebago Minnie directly on the 100V (or less) 50Hz that they have here. It lasted a long while but eventually gave up. I blew a lot of circuit breakers also, lol. Also my microwave didn't work.

Dale: Thanks for the tip about the autoformers. Good solution to take care of the voltage difference.

wa8yxm: Your Source-----CONVERTER--_Battery----True Sine Wave Inverter-----Output solution is nice in theory, but requires wiring for 300A + 12V DC. And you are basically describing a frequency converter, which I have been considering for a while. Just a little difficult to find one for single phase and that works with those voltages and frequencies. And they're expensive...

You might be surprised at the actual ratings of the hardware. A/C's may or may not be happy with 50 HZ.. a Buck/Boost transformer in BOOST mode will take care of the voltage... But be sure it is rated for 50 HZ.

Televisions, likely will not work there since television is tied to line frequency and the different line frequewncy means your US TV won't be happy as a TV, will work as a monitor or playback devbice however.

Microwave may or may not complain about 50 Hz

Water heater and other resistive devices (Space heater, Fridge) won't mind at all, they are not frequncy senistive,, but are voltage sensitive.

How to run electronics (Radio's Computers, Televisions)

Years ago I saw a very expensive "line Conditioner" device in an Electronics store (I shop those kind of stores)

I will block diagram it using RV terms:

Source-----CONVERTER--_Battery----True Sine Wave Inverter-----Output

Get a good converter, Say a Progressive Dynamics 9280,,, a mess of batteries (Say 2 or 3 or 4 pair of GC-2) and a good TRUE SINE WAVE inline-type inverter (mine is a Xantrex Prosine 2.0 but that's no longer made)

Turn off the circuit breaker feeding the Inverter so it takes over supply9ing power to your electronics... I have done this in a "Voltage off" campground.

(I use a Progressive Dynamics 9180 with charge wizard, but the 9280 is basically the same box) NOTE: I do run out of power if I nuke too much dinner.

do you need/use the A/C and MW
those are the two most critical items for frequency
everything else the converter charger and any USA appliances just need 120v

electric motors fans, compressors etc.. will run about 16 percent slower
but should be OK as long as the voltage is increased to 120v and the load is not severe, aka 100* temperture days

most electronics won't care, most are designed to operate from 100-250v and have switching power supplies

but the charge converter will probably need 120v
electric heaters, hair dryers, etc.. will be NOT as hot but will work fine with no damage to them

since this is a fixed 100v 50Hz
a 30amp aka 3600 KVA 'buck-boost' transformer, wired to boost mode
put it in a box with male 100v connector on the input lead and female RV connector on the output lead, this will prevent accidental over voltage damage, if true 120v power is available somewhere ?

you haven't mentioned what the local AMPS/watts of the hookup will be
100v 20amp ? 30 Amp ?
this is going to control what you can power up and the MAX size the boost transformer needs to be

Get a battery charger for international voltage to charge your battery and then an inverter to run what is needed.

Mastervolt, Victron, Xantrex all make the equipment you need.

Or do without. This might be done with a locally bought 10+ amp battery charger to run the 12v stuff and propane. Maybe a couple solar panels (200 to 500 watts). You will not be running the air conditioner or microwave like this unless you have an on-board generator and you are allowed to run it.

If you could rent a motor/generator to convert power that might be feasible.

Most appliances won't notice a frequency difference if you can step up the voltage to closer to 120 VAC. Anything with a motor, like your AC will not run right on the 50Hz. It will run 20% slower and the lower voltage will probably burn it up. It will also try to draw more current which can blow circuit breakers.
Some electronic items may operate just fine but it would be a gamble to try without reading their specs.
I'm not sure what this will do to your converter/inverter/battery charger. Most have over and under voltage protection.

Motor-generatior converter, or get a rig designed for that voltage and cycles. Problem is not so much voltage, but the frequency.

I lived in Japan for a bunch of years but didn't own an RV at the time. Two appliances of concern are the AC/DC convertor-battery charger and the Air Conditioner. A Hughes Auto transformer might solve your problem or at least get you closer to 120VAC. What I don't know is if a Hughes has enough boost to get the volts into the sweet zone from 100VAC. If not just a basic 3600 watt step up transformer will work but you won't have the nice box with power cord adaptors a Hughes comes with. Not much you can do about the 50HZ unless your budget is near unlimited. The only noticeable problem the frequency difference gave me was clocks ran a bit slower.

A permanent installation in the coach would be best but do make allowances for a bit of ventilation, size and weight of a transformer. They are heavy and the higher the watts the bigger they get. Install the transformer before the shore power-generator transfer switch. You don't want to boost the generator 120VAC.

When I lived in Japan never need transformers for the home appliances I brought with me from the states. TV's, computers, stereo equipment, microwave, vacuum, washing machine and such worked OK. But when I moved to Australia with 220VAC 50HZ that all changed. Had to get transformers for everything that wasn't switchable.