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Pure Sine Wave Inverter

Posted: Fri Aug 16, 2019 10:41 pm
by Derrihj
Hi friends is there anyone here that has an idea of how to make pure sine wave inverter in flowcode 8 things of sine table I totally have no idea how to start and end please share anyone with an idea on how to code pure sine wave oscillator

Re: Pure Sine Wave Inverter

Posted: Sat Aug 17, 2019 12:07 pm
by STibor
Hello,

Component: Frequency Generator (DSP)
Basic Sine Wave Generator:https://www.matrixtsl.com/wiki/index.ph ... ator_(DSP)

Re: Pure Sine Wave Inverter

Posted: Sun Aug 18, 2019 9:36 am
by Derrihj
Thanks STibor but i need a live example for slow learners.

Re: Pure Sine Wave Inverter

Posted: Sun Aug 18, 2019 6:54 pm
by Steve001
Hi Derrihj

Have you tried a google search "microchip inverter reference design"

https://www.google.com/search?q=microch ... e&ie=UTF-8

they are quite well documented and contain lots of information

Steve

Re: Pure Sine Wave Inverter

Posted: Wed Oct 23, 2019 9:55 am
by Derrihj
Guys how to obtain a sine table of 32 values in flowcode? Please help really need help on this and how to implement SPWM inverter.

Re: Pure Sine Wave Inverter

Posted: Wed Oct 23, 2019 3:54 pm
by Benj
Hello,

Hopefully this should help. Currently the scaling is for a 16-bit signed int and will go between -32767 and 32767. If you need to change this to an unsigned value then I can provide an example for this too.
SineGen.fcfx
(11 KiB) Downloaded 153 times

Re: Pure Sine Wave Inverter

Posted: Sat Oct 26, 2019 12:13 am
by Derrihj
Thanks Benj but is this possible for you to provide this as a full complete spwm dc- ac inverter project with feed back say by having different sets of sine table with each having may be 32 values for different duty percentage values may be starting at lower duty of may be 65 percent when the inverter is first switched on then goes on increasing duty until the desired output is achieved say may be 220vac ,230vac or 240vac? we want to see how this is done in flowcode completly because we want to shift to flowcode since its easy to use than others.We want this to have 4 siginals ,that is 2 high and 2 low siginals to be fed to two IR2110 driver ICs.I dont know exactly how to bring out this clearly but i guess you get what am trying to say.THanks sir.

Re: Pure Sine Wave Inverter

Posted: Thu Oct 31, 2019 1:27 pm
by Benj
Hello,

It's probably easier if you generate one sine wave at full scale and then use say the DSP scale component to allow you to dynamically scale the wave. You could maybe use the DSP control component to provide PID type feedback processing for the scaler.

Re: Pure Sine Wave Inverter

Posted: Fri Nov 15, 2019 7:29 am
by Derrihj
Thanks Benj but Guys, i totally don't know how to do this which is why am requesting for a complete project if that is possible then discus where i get lost from which i think is the best way to learn especially for slow learners like me thanks guys.

Re: Pure Sine Wave Inverter

Posted: Mon Nov 18, 2019 4:49 pm
by DCW
Hello there... well now I believe that flowcode 8... has a facility whereby you can type in C-code ... and then it will.. 'create' flowchart (flowcode code) symbols...!!

So now if you go look on the internet.. and look for a brilliant indian fellow called - Tahmid - he has a brilliant working model, of a SINE wave inverter, that will not be too difficult to get around.

I studied it at length, and it seems very do-able... So buddy.. go check him out... Tahmid did it real nicely..

Ask Benj - to help you.. with procedure for creating flowcode - from C-code..

I sure it will work..

regards .. DCW ...

Re: Pure Sine Wave Inverter

Posted: Fri Nov 22, 2019 1:39 pm
by Derrihj
Thanks DCW yes i know that guy Tahmid i my self been using him for some time and he has been so helpful in my smp inverter research and about flowcode i think it cant translate all the C code directly into flow-chat maybe Benj can come in and help us out. My only worry is how do we get Benj visit Tahmid page look at the sine wave project there and translate it into flow code