Hi all,
being in need of an inverter capable to generate a pure-sine 3-phase 380V 50Hz voltage (with a max. power of, say, 500W) from an AC single-phase or DC source, I've browsed around but after a thorough search I've found nothing suitable on the market (too expensive high-power UPS, or too distorted-wave cheap VFD)
Then my attention was drawn by a cheap pure-sine 3-phase inverter kit, sold around in Chinese marketplaces, made by two boards: the driver board EGS031, already assembled and featuring an EG8030 controller, and the power board EGP3000W, sold as a naked PCB instead.
The documentation I've found is very scarce and mostly in Chinese language, but with the help of an online translation service I've managed to get a clearer picture of what to expect from this project, gathered all the relevant schematics and found it suitable for my needs. So I've decided to take the risk, ordered the kit, started sourcing the components and had the 3-phase transformer custom built to my specs, hoping to find more clues along the way.
Now the strange thing is that, although the two boards seem to be widespread and, judging from the seller's statistics, many kits have been sold, nonetheless there's no sign around of anyone having actually built the kit and shared his experience.
If you try searching for "EGP3000W" you will find just lots of sellers of the board (and its matching EGS031 driver) but all the advertisements replicate the identical pictures of the very same assembled and powered kit, as if it were the one and only ever built...
Thus, the purpose of this post is to make "ripples in a pond" to find out if there's anybody who approached / built this inverter, or else is also interested in building it and willing to share our findings, ideas and doubts,
I'm trying also to grant more visibility to this project, given that there are no other forums around discussing it.
Greetings from Italy!
Roberto
being in need of an inverter capable to generate a pure-sine 3-phase 380V 50Hz voltage (with a max. power of, say, 500W) from an AC single-phase or DC source, I've browsed around but after a thorough search I've found nothing suitable on the market (too expensive high-power UPS, or too distorted-wave cheap VFD)
Then my attention was drawn by a cheap pure-sine 3-phase inverter kit, sold around in Chinese marketplaces, made by two boards: the driver board EGS031, already assembled and featuring an EG8030 controller, and the power board EGP3000W, sold as a naked PCB instead.
The documentation I've found is very scarce and mostly in Chinese language, but with the help of an online translation service I've managed to get a clearer picture of what to expect from this project, gathered all the relevant schematics and found it suitable for my needs. So I've decided to take the risk, ordered the kit, started sourcing the components and had the 3-phase transformer custom built to my specs, hoping to find more clues along the way.
Now the strange thing is that, although the two boards seem to be widespread and, judging from the seller's statistics, many kits have been sold, nonetheless there's no sign around of anyone having actually built the kit and shared his experience.
If you try searching for "EGP3000W" you will find just lots of sellers of the board (and its matching EGS031 driver) but all the advertisements replicate the identical pictures of the very same assembled and powered kit, as if it were the one and only ever built...
Thus, the purpose of this post is to make "ripples in a pond" to find out if there's anybody who approached / built this inverter, or else is also interested in building it and willing to share our findings, ideas and doubts,
I'm trying also to grant more visibility to this project, given that there are no other forums around discussing it.
Greetings from Italy!
Roberto
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