Hopefully? Another 48vdc-240vac Toriod Inverter build.


Author Message
KeepIS

Guru

Joined: 13/10/2014
Location: Australia
Posts: 1845
Posted: 01:39am 01 Jan 2023      

The confusion for me comes from the lumping inverter with Solar inverters, low voltage inverters 12v to 48V? and not just the frequency, LF inverter should be to me as least, an inverter running internally at 50hZ/60hZ, but most (not all) refer to LF as a having big transformer and HF no big transformer. Both Solar and 12V-48V inverters.

From a quick search  
     
  Quote  
LF inverters have big heavy transformers in them. They are generally more reliable, they weigh a lot more for the same power rating, and they can handle inrush motor currents much better.

  Quote  
HF inverters have tiny transformers, they are cheap to manufacture, they weigh a lot less, and they are usually (but not always) more efficient.. but not by much.

  Quote  
The high frequency inverter can deliver the same power at higher frequency with a much smaller and lighter transformer, as a result, the HF inverter is often called transformer-less inverter, or TL inverter

  Quote  
By definition, Low frequency power inverters got the name of “low frequency” because they use high speed power transistors to invert the DC voltage to AC power, but the LF inverter drives transistors at the same power frequency (60 Hz or 50Hz) as the AC sine wave power output voltage.


This link below, to me, is a HF inverter as it's based on the EGS8002, 25kHZ & 50/60 Hz (or what ever) but many forums and web sites refer to this an LF inverter? which is the mistake I obviously made.
   
Inverter Driver board

This inverter below is what I refereed to as a HF inverter, a LV DC to HV DC input board and a HV DC to 240Vac board - No Large Transformer. Likely wrong term by me again.

DC inverter input:


AC pure sign wave output:

 

Soooooo, I want an inverter based on an EG8010 OR the Nano version of this, driving a Stacked Toriod. 48 VDC input - 220 VAC out. Like the OzInverter, is the Nano version different?

Apology for any confusion.
Edited 2023-01-01 14:32 by KeepIS