3 phase signal generation using pic controller

[mrarslanahmed]

hello all

i want to know that how would i generate a three phase signal with pic controller ?

 

[colin55]

You output a square-wave and pass it to a capacitor via a resistor, as I have done to produce DTMF.


Dial Alarm-2
http://www.talkingelectronics.com/projects/Elektor/Dial Alarm-2/DialAlarm-2.html

 

[Tahmid]

hello all

i want to know that how would i generate a three phase signal with pic controller ?

What do you want this three phase signal to do? And what type of 3-phase signal are you trying to generate?

My guess is that you are attempting to build some sort of a 3-phase inverter. In that case, you're looking to implementing a 3-phase SPWM (DDS) to feed to drivers. So, you'd be creating the digital drive signals which when driven through a high-power stage (such as a 3-phase H-bridge) and filtered, you get 3-phase sine wave out - each offset by 120 degrees. Is this what you are attempting to design?

 

[colin55]

I think the original poster has gone back to his normal job as a brain surgeon. He certainly hasn't bothered to reply to any of our suggestions.

 

[kripacharya]

You output a square-wave and pass it to a capacitor via a resistor, as I have done to produce DTMF.


Dial Alarm-2
http://www.talkingelectronics.com/projects/Elektor/Dial Alarm-2/DialAlarm-2.html

How would this give you 3-phase signals ?

 

[colin55]

How would this give you 3-phase signals ?

It just does.

 

[kripacharya]

It just does.

Ah.... magic ?
I don't think so. LoL !!

 

[colin55]

Ah.... magic ?
I don't think so. LoL !!

Look at the program and see how it's done.

 

[kripacharya]

Look at the program and see how it's done.

What program ? Kindly post the relevant information here rather than pointing to long and verbose websites.

thanks

 

[FvM]

Perhaps we can agree on the point that the original question is too vague to suggest a specific solution. So a lot of processor based signal generation methods may be used.

The said DTMF signal generation circuit feeds square waves for both tones to a passive RC filter. Of course the method can be extended to multiple phase shifted channels. No idea if it fulfills the OP's requirements.

 

[mrarslanahmed]

hi all

thanks for ur concerns and reply...

i was given a three phase motor in very cheap price but didnot had have its drivery circuitry so for that purpose i am thinking to work on three phase circuit...

 

[1234MIAN]

thameed sir i need all information regarding three phase SPWM SINE WAVE INVERTER HOW TO DESIGN IT ...THANKS SIR

 

[Chinmay Gharat]

can you tell me for exactly what you are going to use 3phase,so that i can help accordingly.

 

[1234MIAN]

Three phase sine wave inverter

HI ..

I want to make three phase sine wave inverter.I have read many article of single phase inverter and understand it very well
(SPWM INVERTER TRANSFORMERLESS).now my problem is that
i want to make 500watt three phase sine wave inverter but can't understand how to start it ..what to study i also read this
sites three phase inverter ..
i want to make that three phase sine wave inverter thats is used in SOLAR POWER GENERATION and then using this inverter i transmitt it on 3PHASE TTRANSMISSION LINES..

please help me how to start it.what to study etc

thanks :