Based of the informative info recently posted by @ChrisFullPower in another thread I'm intrigued in DIY'ing a charger from used rectifiers.
A quick search on eBay for '48v rectifier' has made me realize it's definitely doable at costs much lower than off the shelf options...
I'll start with a few examples of what I've found.
I'm assuming one would need to figure out a way to adjust the voltage, unless you can find something pre-programmed.
(I apologize for the terrible links, I'm using the ebay app to share the item and copy the link.)
These look promising because you could parallel them together to hit your target and/or have the ability to scale them.
Find many great new & used options and get the best deals for **LOT OF 5** Eltek Valere VA Power Supply 48v 20A Rectifier at the best online prices at eBay! Free shipping for many products!
This seems like an excellent price but you'd need more connectors.
Find many great new & used options and get the best deals for ELTEK Flatpack2 48V W High Efficiency Rectifier: .105 at the best online prices at eBay! Free shipping for many products!
This seems like a great option for our friends up North.
The Cordex HP 2.0kW is backward compatible with existing Cordex 1.8kW shelves and systems providing users an easy. > Backwards compatible with Cordex 1.8kW shelves and power solutions. temperature operation, HP series rectifiers are also ideal for harsh outside plant enclosure installations.
So what am I missing here? I feel like it has to be something substantial or it would already be a popular topic...
Edit - great breakdown for what I consider the nicest build in the thread.
Post in thread 'DIY 'Chargenectifier'' https://diysolarforum.com/threads/diy-chargenectifier./post-
The crux of all this is figuring out how to turn these on and communicate with them. It’s not as simple as flip a switch. For that reason I’d stick to either the Eltek Flatpak2 or Huawei r. Here are some threads from another board that may be of some use.
Guys i think i have found the world most compact and powerfull charger ever 8) It's a ELTEK 1.8kW flatpack S !! These are availlable in 24 and 48V and take from 100 to 240V. But what is fantastic is that they have the unbeatable 47 W/cu inch density !! and are 96.5% efficient!!! These are...
What do you think of this rectifier? High efficiency > 96% Ouput voltage 42~58VDC, default value 53,5VDC Ouput Power w (176~300VAC) Weigh =< 2 KG The datasheet...
The Hauwei used to be a better value but someone on YouTube make a few videos that got a bunch of views so now it’s gone up in price. But at least he has a good write up about it:
The Huawei rectifier itself goes for around $150 for 3kw and the breakout adapter goes for about $20. You don’t need the adapter but it makes it much easier to mess around with.
The Eltek seems to be more plentiful on eBay (as it’s sold and used in the US) and you can get the 2kw or 3kw for $100-ish. Someone made an adapter PCB that also goes for about $20.
Search around on GitHub and you’ll see a few projects that may give you a good starting point.
Based of the informative info recently posted by @ChrisFullPower in another thread I'm intrigued in DIY'ing a charger from used rectifiers.
A quick search on eBay for '48v rectifier' has made me realize it's definitely doable at costs much lower than off the shelf options...
I'll start with a few examples of what I've found.
I'm assuming one would need to figure out a way to adjust the voltage, unless you can find something pre-programmed.
(I apologize for the terrible links, I'm using the ebay app to share the item and copy the link.)
These look promising because you could parallel them together to hit your target and/or have the ability to scale them.
Find many great new & used options and get the best deals for **LOT OF 5** Eltek Valere VA Power Supply 48v 20A Rectifier at the best online prices at eBay! Free shipping for many products!
This seems like an excellent price but you'd need more connectors.
Find many great new & used options and get the best deals for ELTEK Flatpack2 48V W High Efficiency Rectifier: .105 at the best online prices at eBay! Free shipping for many products!
This seems like a great option for our friends up North.
The Cordex HP 2.0kW is backward compatible with existing Cordex 1.8kW shelves and systems providing users an easy. > Backwards compatible with Cordex 1.8kW shelves and power solutions. temperature operation, HP series rectifiers are also ideal for harsh outside plant enclosure installations.
So what am I missing here? I feel like it has to be something substantial or it would already be a popular topic...
BRAVO!!!!! That’s what this boards all about, creativity, well done. I spent my own share of time hunting chinese web sites to see who really manufactured that unit. This will be fun to watch.
BRAVO!!!!! That’s what this boards all about, creativity, well done.
Agreed 100%. I'll do some more research and post updates when I start ordering. I'm planning to power it using my small inverter generator, 3kw will be just over 80% of its rating and give me ~50a @56v after efficiency losses. (it's crazy a year ago that statement would have been Greek to me, amazing forum!)
I spent my own share of time hunting chinese web sites to see who really manufactured that unit.
As did I...
This will be fun to watch.
And hopefully helpful to others in the future.
Your post above will be very helpful, thank you!
Edit for link to said generator https://wenproducts.com/collections...ducts/-watt-open-frame-inverter-generator
cool!!!
I thought that "chargeverter" was a reasonable name tho...
I never thought it wasn't a reasonable and catchy name, had to come up with something different for the DIY side so there were no copyright issues ?.
The product you are offering truly is an amazing value for the money, I'm just stubborn, frugal and have way to much fun building things.
Heck I even wanted to DIY my inverter until I spent an hour on thebackshed and realized I'd probably end up under the shed...
I never thought it wasn't a reasonable and catchy name, had to come up with something different for the DIY side so there were no copyright issues ?.
The product you are offering truly is an amazing value for the money, I'm just stubborn, frugal and have way to much fun building things.
Heck I even wanted to DIY my inverter until I spent an hour on thebackshed and realized I'd probably end up under the shed...
I love that
Huawei RG1 Rectifier Module is a new 3 phases input, 15kW output digital AC rectifier.
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Huawei RG1 Rectifier Module Product Overview
Huawei RG1 Rectifier Module is a digital 3 phase rectifier module, AC-DC rectifier module with an output power of 15kW. The module realizes the conversion of 260VAC~530VAC input and 378VDC rated output. It adopts CAN communication interface with isolated design, and the communication with the monitoring module adopts CAN communication protocol. Through the monitoring module, Huawei RG1 Rectifier Module can be rectified to realize voltage regulation, current limit, single Module switch function. The output voltage can be adjusted by the monitoring module. Moreover, It has the advantages of soft start, perfect input and output protection, low noise, parallel connection and so on. The power supply monitoring technology is adopted to realize real-time monitoring of the rectifier module and load, and the output voltage is adjusted through the background function. Therefore, Huawei RG1 Rectifier Module is used in wireless communication, data communication, network communication, server, workstation and other fields, with very high work efficiency and good stability.
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Huawei RG1 Rectifier Module Product Pictures
Huawei RG1 Rectifier Module Product Specifications
Brand
Huawei
Product
RG1
Dimensions
83mH×206mm（W×470m（D）
Weight
< 10kg Cooling Fan cool (built in)
Input voltage
260Vac～530Vac Input format 380Vac，3 phase 3 lines
Input frequency
40Hz～70Hz，Nominal:50Hz/60Hz
Max. Input current
<=32A
PFC
>=0.99
THD
<=3%
Output Voltage
300V DC-400VDC Nomial 378VDC
Output Power
15kW
Storeage Tempature
-40-75 degree
Humidity
5%-95% ( no condensation)
Altitude
<=m
Input OVP
OVP set point: >530VAC,<550VAC
Input UVP
UVP set point: <260VAC
Output OVP
392 VDC-423.5 VDC( et point can be set through control
Output SCP
Short circuit protection and auto restart after short circuit removed
OTP
Ambient temperature >70 degree
MTBF
>500,000 hours
Noise
<=55dB ( 25 degree full load)
Lighting
5KA
EMC
EN Class B
EN
EN-3-2
EN-3-3
ETSI EN300 386
ETSI EN301 489
ITU-TK.20
Huawei RG1 Rectifier Module Product Features
- Efficiency up to 97%
- Wide input range: 260Vac~530Vac
- THD ≤ 3%
- Support hot swap
- Fully digital control
- Support intelligent electric meters
- Control through CAN bus
- Output voltage and current adjustment
- LED fault alarm
Huawei RG1 Rectifier Module and More Related Models
Part Number
Input Voltage
Output Voltage
Output Power
Efficiency
Operating Temperature
RG1
85-300Vac
42-58Vdc
270W
94 %
-40C to +75C
RG1
85-300Vac
42-58Vdc
870W
96 %
-40C to +75C
RN1
85-300Vac
42-58Vdc
W
94 %
-40C to +75C
RG1
85-300Vac
42-58Vdc
W
96 %
-40C to +75C
RG2
85-300Vac
42-58Vdc
W
96 %
-40C to +75C
RN2
85-300Vac
42-58Vdc
W
94 %
-40C to +75C
RG1
85-300Vac
42-58Vdc
W
96 %
-40C to +75C
RG2
85-300Vac
42-58Vdc
W
96 %
-40C to +75C
RN1
85-300Vac
42-58Vdc
W
92 %
-40C to +75C
RN2
85-300Vac
42-58Vdc
W
94 %
-40C to +75C
RG1
260-530Vac
42-58Vdc
W
96 %
-40C to +75C
RG1
260-530Vac
300-400Vdc
15kW
97%
-40C to +75C
RG1
260-456Vac
300-500Vdc
15kW
95.8%
-30C to +65C
Huawei RG1 Rectifier Module Product Applications