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Haxby

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Joined: 07/07/2008
Location: Australia
Posts: 423

Posted: 11:30am 16 Dec 2020

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Hi all,

Can anyone tell me the voltage ratings of the 1kw and 2kw aero-sharp transformers are before modifications?

The 3kw ones are 250:230v
The 1.5kw ones are 93:230v

Just need to know what the 1kw and 2kw ones are, thanks!

poida

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Joined: 02/02/2017
Location: Australia
Posts: 1418

Posted: 12:34pm 20 Dec 2020

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2kW Aerosharp is:

230V primary
250V 8.7A secondary
0.93V AC RMS/turn at 230V AC RMS on the secondary winding.

It's not a bad sized toroid.

wronger than a phone book full of wrong phone numbers

Haxby

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Joined: 07/07/2008
Location: Australia
Posts: 423

Posted: 08:39pm 20 Dec 2020

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Thanks Poida.

I think there is a 2.5kw version too. My guess is that 2kw and higher run 230:250 transformers while 1.5kw and lower run 93:230

If I can find another 2 units I can start on a 3 phase build

poida

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Joined: 02/02/2017
Location: Australia
Posts: 1418

Posted: 12:19am 22 Dec 2020

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3 phase inverter build?
Based on the EG8030?

I have a toy 3 phase system that uses an Arduino Mega
and 3 half bridge outputs. In testing it can drive 3 phase AC servo motors.
Rotation speed is controlled with a pot. with speeds from -10 RPM to +10 RPM
continuously variable.

I look forward to seeing how your project goes and how you use it.

wronger than a phone book full of wrong phone numbers

Haxby

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Joined: 07/07/2008
Location: Australia
Posts: 423

Posted: 02:26am 22 Dec 2020

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I'm just contemplating a 3 phase warpverter build based on Andrew's stm32 blue pill project here

I'm finishing my single phase warpverter build for my 200v Prius, and I found it all fits nicely in a rack mount box. Actually the board fits in a 2U box and the 4 transformers fit snugly in a 3U size box.

Now.....I have another set of transformers so I can double the output just by paralleling the second set of transformers in another 3U box.

BUT, if I scrounge around and find another couple of aerosharp inverters, then it will be tempting to make a 3 phase warpverter.... Just for fun!

It's just thoughts at the moment because I don't need 3 phases for my application, but it will be hard to resist if I come across the extra parts.

This stuff is addictive and I have a bit of free time to burn for the next few months. Idle Hands....
Edited 2020-12-22 12:41 by Haxby

Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406

Posted: 08:57pm 22 Dec 2020

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Its should be pretty easy to suitably synchronise three Warpverters.

That is a very neat packaging solution by the way. You can remove the electronics for maintenance or repair, and leave the heavy transformers behind.

Cheers, �Tony.

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