Sine wave power inverter

[babalola]

hi guys,
iam reposting the schematic onpdf format

babalola.

[iw2fvo]

Hi,

I saw the schematics diagram for the inverter.
Is there any operational description of the system?
Is this a fully working inverter ?

Thanks
Ambro
IW2FVO

hi guys,
iam reposting the schematic onpdf format

babalola.

[babalola]

hi,
i have only posted the aspect of my schematics i think is related to the problem i have need to solve and that is, code to regulate the output of the inverter. i have the functional complete schematic.if the need arise i will post the full schematic.however for operational explanation,a single PWM signal is geenerated via the CCPR1L(RC1) of the 18f452,this signal is separed to PWM1 and PWM2 through the operational amplifier LM393 before passing to the steering logic of 74hc257 from where we get the four driving signals through the two unit (A/B) of the 74257.the additional signal on RC2(SWITCHING SIGNAL) is to change the input A/B of 74257.
i hope i make some meanings.can someone give a help to the regulation proble please?
babalola

[mincing]

YOu have done quite a bit of job.And how are you reading the adc i.e. the output feedback.
I mean what is the shape on pin4 /an2.Is it half recified sine?

Earlier there was a suggestion in the same forum to have anther array of error corrction and add a term to
CCPR1L = sine_wave[index];
like CCPR1L = sine_wave[index]+sinewave_corr[err];

with no load check at each oint what is the reading on adc and then with load check the same .the differen ce will give an idea of how to frame error array.
then keep updating the error array based on feedback.

also it is not clear what is the update time(timer0 interrupt).
may be you can contact me at [email protected],since i happen to check forum rarely.

[babalola]

hi sougata,

can someone please give a precise support on this issue of output regulation of the inverter.
i know there are a lot of you expert outside there who can help.

regards.

YOu have done quite a bit of job.And how are you reading the adc i.e. the output feedback.
I mean what is the shape on pin4 /an2.Is it half recified sine?

Earlier there was a suggestion in the same forum to have anther array of error corrction and add a term to
CCPR1L = sine_wave[index];
like CCPR1L = sine_wave[index]+sinewave_corr[err];

with no load check at each oint what is the reading on adc and then with load check the same .the differen ce will give an idea of how to frame error array.
then keep updating the error array based on feedback.

also it is not clear what is the update time(timer0 interrupt).
may be you can contact me at [email protected],since i happen to check forum rarely.

[viknik8]

I can not find HEX a file for PIC18F452, PUBLISH

[iw2fvo]

Thanks ,

Will you please post the part list, and the software for the PIC ?
What are the performance of this equipment ?
Any brief explanation of its operation ?

Thanks in advance for having posted complete data for fully repllicable project.
Regards,
Ambrogio
IW2FVO

hi guys,
iam reposting the schematic onpdf format

babalola.