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wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
 Posted - Apr 25 2012 : 02:43:52 AM
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Hi John, long time no type.
I'm curious if anyone out there has tried this:
1) Get an ordinary pure-sine inverter.
2) Get a few grid tie inverters.
3) Parallel the outputs of 1 and 2.
4) Power up 1.
5) Power up all of 2, sequentially.
6) Connect loads to the output and test to see if you are able to get the summed power output of all inverters.
The reason why you need 1 is because the grid tied inverters need to sense a voltage that is present on their outputs in order for them to work. It's an inbuilt safety feature to protect both the end-user and power-line maintenance crews.
I don't know of anyone who has tried this. I think it should theoretically be possible. It's like an upgradable inverter solution, on the cheap. Not very energy efficient, as these types of inverters usually only guarantee >80% efficiency. I designed an inverter achieving >95%.
Johnny
EDIT:
Sorry to the OP if I have hijacked your thread, but your question has been asked so many times and the answer has always been the same to all those who came before you; that inverter design sucks! Even if you managed to get such a simple and crude design to work, you'd be getting sub 80% efficiency for sure, which in a way, defeats the purpose of a power converting device such as an inverter.
Words of advice:
If you ever want to make an extremely compact, sub 300W inverter, use the boost converter topology. This topology is one of the most simple and efficient types you could use in the DC-DC converter stage of a modernly designed inverter. The amount of copper used in the primary magnetic device (inductor) is, by design kept to a minimum, which negates the need for a secondary coil to couple the magnetic energy (then called a transformer). What this means is the electric current has less copper to flow through, thus higher efficiency and cooler operation leading to a more compact design. I hope that's clear.
I have found this website to be a good sanity check for my designs:
http://schmidt-walter.eit.h-da.de/smps_e/smps_e.html
I hope you, or at least someone out there can find this info useful.
Johnny |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
Edited by - wasssup1990 on Apr 27 2012 08:34:09 AM |
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Is this the correct output for this Inverter?
