600/800W 220~230v AC Inverter SMPS from 12v DC

[rezacadet]

Hi,
I am new in this forum. I am looking for a 12 v DC to 220~230 v AC 600/800w SMPS Inverter for Home appliance use like ips. I am looking all around the web for this kind of device but not getting clear answer. Please anybody help me providing full diagram and PCB layout.

Thank in Advance
Reza

 

[goldsmith]

Dear Reza
Hi
it is pretty simple . but i don't think that you find a complete circuit and all things ! if you want design , it i can help you .
Best Wishes
Goldsmith

 

[rezacadet]

Dear Reza
Hi
it is pretty simple . but i don't think that you find a complete circuit and all things ! if you want design , it i can help you .
Best Wishes
Goldsmith

Dear Goldsmith,

If you do that it will be helpful to me. It will be more better if you can even give me the diagram of a 600w SMPS Inverter Circuit.

tnx
reza

 

[goldsmith]

I can help you to design !
At first , we will have , an H bridge to increase the 12 volts of your battery , ( with HF transformer ) and then another H bridge with SPWM and without transformer ( it will has a simple filter at the out put ) . and then a feed back through out put , to the first stage .
Best Wishes
Goldsmith

 

[rezacadet]

Hi Goldsmith,

Tnx again. I think i'll get all support from you.
As much as i know the first H bridge circuit increase the input dc 12/24 Volt to 380vDC with Hi frequency. And the second H bridge with SPWM without transformer, change the Hi frequency 380vdc to 220vac 50Hz output. Am i right ?? If no pls provide me (If u Can) stage by stage information of design.

Please Provide me a common H bridge Design to increase DC voltage according to Requirement. Which circuit can be change as per our Requirements.
Also second H bridge stage and the final stage.

Can we make commercial SMPS for home appliance use ??

 

[goldsmith]

Hi again
Why 380 volts ? 311 volts . and why changing high frequency 311 volts to the 50 HZ ? i have to describe it again :
1- we will change the amplitude of a low value DC voltage to the high value such as 311 volts ( of course square wave ) and then we will rectify and filter it . and then ( it has an HF transformer with pretty low size ) we will use this increased DC voltage as supply of another stage ( it is H bridge too ) . but this stage will get SPWM ! not PWM ( first stage has PWM ) . and this stage won't have any transformer . it just will have a low pass filter . ( LC ) . you understand ?
BTW : do you know meaning behind PWM and SPWM and difference between them ? and what about boot strap drivers ?
Best Wishes
Goldsmith

 

[rezacadet]

Hi its me again,
Sorry for my bad English........
i know PWM & SPWM. and i have some idea about boot strap. So now tell me how should i start.........

Best Wishes
Reza

 

[kabiru]

Hello rezacadet,i can give you diagram of modified sine wave using H-bridge if you are intrested.

 

[goldsmith]

Hi Reza
At first you can use an SG3526N and two mosfet driver ( e.g IR2113 ) you should design an H bridge with it , to achieve high voltage ( 311 volts DC ) . i think 120KHZ would be good as PWM frequency . at first read the datasheet of SG3526N . and tell me can you design first stage ?
By the way , are you familiar with inductor and ferrite transformer design ? if no the way is pretty simple . i can give you just 4 page ( tutorial ) . that you can design all kind of your magnetic elements with it !
Best Wishes
Goldsmith

 

[rezacadet]

Hello rezacadet, i can give you diagram of modified sine wave using H-bridge if you are intrested.

Sorry Dude,
Tnx for your offer. At present i am learning about SMPS inverter from gold smith. After learning the concept i will work for practical. Then i maybe need your circuit.

BR
Reza

- - - Updated - - -

Hi Reza
At first you can use an SG3526N and two mosfet driver ( e.g IR2113 ) you should design an H bridge with it , to achieve high voltage ( 311 volts DC ) . i think 120KHZ would be good as PWM frequency . at first read the datasheet of SG3526N . and tell me can you design first stage ?
By the way , are you familiar with inductor and ferrite transformer design ? if no the way is pretty simple . i can give you just 4 page ( tutorial ) . that you can design all kind of your magnetic elements with it !
Best Wishes
Goldsmith

Hi Fnd,
Please never mind, i was detached from electronic ckt for last 7 years, so it will take some time to understand. i want to know something, why it's 311v & why 120KHZ ? is there any specific reasons? please give me your tutorial file for help.

some time i will ask you like stupid, please never mind.

Best Wishes
Reza

 

[kabiru]

Sorry Dude,
Tnx for your offer. At present i am learning about SMPS inverter from gold smith. After learning the concept i will work for practical. Then i maybe need your circuit.

BR
Reza

- - - Updated - - -



Hi Fnd,
Please never mind, i was detached from electronic ckt for last 7 years, so it will take some time to understand. i want to know something, why it's 311v & why 120KHZ ? is there any specific reasons? please give me your tutorial file for help.

some time i will ask you like stupid, please never mind.

Best Wishes
Reza

is good to learn...keep learning.

 

[goldsmith]

Hi Reza !
I came back again !
You asked me why 311 volts ? well is the phase voltage 220 volts in your country ? if yes , don't forget that this value is effective . ve*sqrt(2) =311 volts . did you know it ? and about 120KHZ , of course it has a reason . if you increase your frequency , the size and price of your magnetic elements will decrease . but we have some red boundaries in design . i think if you design your first stage as a current mode system , the result will be pretty good . but for current mode we have a limitation to select frequency of operation . it can't exceed from these values . ( if you exceed from this frequency the result will become to be bad ) .
By the way , are you familiar with SMPS design process ?
Best Wishes
Goldsmith

 

[rezacadet]

Hi Goldsmith,
Its me again. I understand what you have said in previous post. my country's phase voltage is 220v. I have some small idea about SMPS but not clear concept.
Can you please give me some doc step by step, that i can achieve a clear concept about SMPS design process.

Br
REZA

 

[sam781]

@Goldsmith: If the requirement is to design a ferrite transformer needed for dc-dc push pull bridge converter having the spec (Vp=12v, Vs=320v, VA=500, f=60kHz), how can we chose the required ferrite core. Could you please show us the step by step process of it?

 

[goldsmith]

Hi again . can you give me your email address , please ? thus i can send you some good references about SMPS design .
Best Luck
Goldsmith


Hi Sam
See below , please , i have told , how to select core and how to design magnetic element for an SMPS . ( some days ago i have attached some tables about core selection ) :
https://www.edaboard.com/threads/229615/
Good luck
Goldsmith

 

[cicelywu]

Dear Friend

Please kindly contact with me if you have any question about magnetic component in design, I hope I can help you, I am engineer who designs magnetic parts( transformer and inductor and choke and filter).

Best Regards
Cicely

 

[Tipu606]

Hi again . can you give me your email address , please ? thus i can send you some good references about SMPS design .
Best Luck
Goldsmith

Hi Sam
See below , please , i have told , how to select core and how to design magnetic element for an SMPS . ( some days ago i have attached some tables about core selection ) :
https://www.edaboard.com/threads/229615/
Good luck
Goldsmith

Salam Goldsmith
instead of taking a picture of your SMPS design pages why dont you scan it
and then post it , then maybe we will be able to see it clearly then
regards

 

[sam781]

Hi Sam
See below , please , i have told , how to select core and how to design magnetic element for an SMPS . ( some days ago i have attached some tables about core selection ) :
https://www.edaboard.com/threads/229615/
Good luck
Goldsmith

I didn't find the way to chose required core for a desired power handling capability at certain frequency. The process shown there mainly related to calculation of number turns if there is already a core at hand.

Should we not chose the core first then turns calculation?

- - - Updated - - -

@cicelywu: Could you please help us learning to design high efficiency transformer? We believe, we'll learn more about practical things from your experience.

 

[goldsmith]

Hi sam . did you see latest page of that thread ? i have attached 8 page of a book . don't forget most important thing in learning is reading carefully .
https://www.edaboard.com/threads/229615/
Good luck
Goldsmith

Salam Goldsmith
instead of taking a picture of your SMPS design pages why dont you scan it
and then post it , then maybe we will be able to see it clearly then
regards

Dear Tipu
Hi
Thank you for this remark , but unfortunately my scanner has been destroyed ! i should buy a new one . but i will do that .
Thanks
Goldsmith

 

[Tahmid]

Hi Goldsmith,
Its me again. I understand what you have said in previous post. my country's phase voltage is 220v. I have some small idea about SMPS but not clear concept.
Can you please give me some doc step by step, that i can achieve a clear concept about SMPS design process.

Br
REZA

SMPS is a large field. There are various topics. There are various topologies to choose from. It would be sensible to start reading from a book. Marty Brown's "Power Supply Cookbook" is a good book to get your basics right. Then, you can read other books. You should also go through the application notes related to SMPS of various manufacturers.