2216Views7Replies

Author Options:

need circuit diagram for a sin wave inverter? Answered

good day honorable members
pls can anyone help me
i want to build an inverter and i need a circuit diagram for an 50Hz 24v to 220v sinwave inverter.
Pls can anyone suply me with an circuit diagram for an 2KVA and a 5KVA inverter
pls pls help me
thank you in advance

7 Replies

user
iceng (author)2012-05-12

You don't know what  you are asking for :-(

This points to one of the related near sine wave inverters.
If you can build it,
then you know it will work on 24vdc and
by selecting a bigger transformer with ten parallel power transistors
You can begin to approach what you seek.

You know what heatsink grease ( white sh_t ) is and what metal to use.

A

Select as Best AnswerUndo Best Answer

user
rahvin1223 (author)iceng2012-05-12

Good day iceng
thankyou very much for your reply i do apreciate it very much
the circuit that yoy pointed to is for a square wave inverter, i need a sinwave inverter. If you could pls give me a sinwave circuit diagam pls.
I know what heatsink grease is, but not the metal that i need to use, pls could u tell me what i need to know.
Thank you very much

Select as Best AnswerUndo Best Answer

user
iceng (author)rahvin12232012-05-13
Yes PWM is a better method as Steve points out.

.........You will need ;
  • To loose the simple inverter circuit..
  • Skill with a micro processor,  Micro-chip has one for easy inverter PWM driving.
  • You still need high current inductive components to translate 24VDC to 220VAC..
  • A semiconducting transistor capable of high speed switching  at 240 amperes per inverter circuit leg...
  • A set of two or four devices depending on circuit strategy your final design selects to use..
  • That 240ADC is 5KW reflected back to 24V at 85% efficiency..
  • A 24VDC power source capable of 240ADC..
  • Heat sinks capable of cooling 720 watts that is the energy lost to heat at 85% efficiency...
  • Some pretty good building skills.
Now see what you you were asking ?

And do you know about  best answers ?

A

Select as Best AnswerUndo Best Answer

user
rahvin1223 (author)iceng2012-05-13

wow that is a lot to consider, and i do want to learn all how to do all of this. pls help me to understand everything that u are talking about pls, i am new to all of this and i realy want to learn it. no i do not know about best answers.

Select as Best AnswerUndo Best Answer

user
iceng (author)rahvin12232012-05-14

microprocessor will take 1 to 3 yrs
elementary power semiconductors are a semester at Devry
I test your intellect :-)

A

Select as Best AnswerUndo Best Answer

user
rahvin1223 (author)iceng2012-05-14

thanx for the link to devry, i will have a look at it and see to maybe take an online course form them. I have done my N3 in industrial electronics a while back that can help me in my indevor to build the inverter, i hope. can u perhaps help me with some meterial about elementary power semiconductors or in microprocessors pls that can help me to learn about it,PLS

Select as Best AnswerUndo Best Answer

user
steveastrouk (author)2012-05-13

THE way to do it is with a phase shifting H bridge, driven by sinusoidally varying PWM.

A.'s method is fun, but I think the formfactor for the resulting sine wave will vary too much WRT load.

Have fun !

Select as Best AnswerUndo Best Answer