Alternative energy sources have become very popular around the globe;
be it in developed nations or otherwise.

Our country Nigeria is no exception.
One of the components of an alternative energy system is an inverter.

Inverter build and design is very extensive and varies from simple to complex designs.

A search on google would provide enough literature review
of inverters.

For this project I built a pure sine wave(PSW) inverter
using a high frequency(HF) design.

In summary input voltage from the battery is stepped up to
350Vdc using PWM (pulse width modulation),
this in turn is chopped using SPWM (sine pulse width modulation)
and filtered to retrieve a 220vac 50Hz output.

Objectives.

*** Input
46-60Vdc

***Output
220Vac (+/- 5Vac)
50Hz frequency
2000W

System Block diagram.

more to follow soon

Following


#Nisol, gaussian, baba11, acorntree



all of you na boss!! Always stalking your posts!!



I am studying EEE. 200L now. . . . I am looking forward to y'all. And if its not too expensive, I'd build one!!



I have knowledge of programming, soldering, circuit building (Veroboard sha oo. I am just going to learn PCB circuit building from a 400L guy when I resume), soldering skill- not perfect, beginner. Lol.


Am I good to go??




Oh!! I know alot of Electronics stuffs too- its my obsession. . . . Am I good to go here?

Auxillary Power Supply

The auxiliary power supply uses a flyback converter to
step down battery voltage from 40-60v to

1. 13v to power mosfet drive stage.
2. Isolated 15v to drive the output IGBT stage.

(note the transformer winding should be reversed as against the schematic's)

Following

PCB art work.

etching in progress.

I did a topic earlier on
simple pcb design

https://www.nairaland.com/1854486/simple-pcb-design

testing the auxiliary power supply

Next stage is the DC-DC up-converter stage

nisol:
Next stage is the DC-DC up-converter stage

But you didn't really explain how you did it nah?



BTW, between EAGLE and PROTEUS, which one is easier and better? And you didn't list the components for us nah..... If this is how you planned to do it, you could've said :- ITS FOR PROFESSIONALS.

@ Dekatron

I haven't finished with the posts.

The parts posted above have been clearly explained and
parts clearly labelled in the accompanying diagram.

Some things you would just have to study on your own
(unless you want us to start a degree program online)

Use whatever you are comfortable with for your designs.
I am not marketing any company's products.

I once built and sell my own inverters after service about 5 years ago to so many people here in abuja. But after somtime I discovered its a waste of time when u can actually get inverter now at a very cheap rate courtesy of Indian and Chinese companies. I can only build it now for personal use and not for commercial purpose. Time has changed.
Do u know you can actually convert that dead ups lying down in your store into an inverter? Just add a 12v brush less dc fan that can be bought in any electronics accessory store inside the casing and well placed in a position that it will allow suction of hot air and you are done. Coonecting batteries higher than 10ah will have to make use of an external DC charger.
I only use this method if my charging source is solar panel.

The DC-DC converter stage is in the following order

1. PWM controller using SG3525 IC
2. Mosfet gate drive using two IXDN604 Ics
3. Gate drive transformer to couple mosfets

Testing the output of the SG3525

zoom in on the two signal outputs to show dead time interval

switching frequency is about 60kHz.

One advantage of the high switching frequency is the use of a small
ferrite core transformer.

delay interval between the two gate drive signals

matamba2:
I once built and sell my own inverters after service about 5 years ago to so many people here in abuja. But after somtime I discovered its a waste of time when u can actually get inverter now at a very cheap rate courtesy of Indian and Chinese companies. I can only build it now for personal use and not for commercial purpose. Time has changed.
Do u know you can actually convert that dead ups lying down in your store into an inverter? Just add a 12v brush less dc fan that can be bought in any electronics accessory store inside the casing and well placed in a position that it will allow suction of hot air and you are done. Coonecting batteries higher than 10ah will have to make use of an external DC charger.
I only use this method if my charging source is solar panel.

Haa, look at what you have just said in a country of well rooted Unstable Government supplied electricity.

Majority of those ready made inverters are not flexible and strong. There transformer Winding are most time Alluminium and are mostly permanently soldered to pcb.
Also, those redheaded are not made for people like me that would like to adjust the frequency as wished for research purposes etc.

Also there transformer core are not made of or high frequency most time which can enable advance users to do other things.

Brother you can know other disadvantages of this imported Invs so use them all to get your business going.
For instance, you can local get Resin, and I catalyst and harder and powdered Iron to make your own High Frequency core cheaply.
Also, to rejuvenate your business, you can start to sell 50W Solar Panel and mantske sure 300 W Pure Sine Wave inverter for it and sell to students.
There other things you can do like making a do it your self module students in secondary schools at 's in the science class to learn more how to soldier components and thus make an Inverter for them selves. Bro, and there many things needed in Nigeria. ****Get a working Pulse Charger Circuit whixh is also know as Battery desulphator and you will be making Millions****
See, components are cheaper now, thanks to God and the CHINESE so you can establish an Industry now with ease.
In
I would like to know where you are in the world.
Let me on Whatapp. You can give me a Whatapp call on 07011052755 or 07060578569

OK

Hi there OP.

No more updates?
What's the progress thus far?

I have this locally built Inverter that was built by one engineer.

Since the battery became dead, I really don't know how best to utilise the Inverter.

I have packed it in the store until i saw this post.

It's 1.5 Kw and has an inbuilt charging system.

Dear Op how best can i make use of this product.