CCS/TMS320F28377S: DC current injection issue in grid tie inverter

chappidi bhima prasad

Part Number: TMS320F28377S

Tool/software: Code Composer Studio

we are facing slight dc current injection issue in grid tied inverter. Please provide the control procedure to eliminate dc current injection. Else guide us with suitable mechanism / tool to find out the DC component in AC current measurement.

over 6 years ago

0 Sudhakar Singh47 over 6 years ago

TI__Intellectual 860 points

Hello,

Please note that the response might be delayed due to holidays.

Regards,
Sudhakar

0 Manish Bhardwaj over 6 years ago in reply to Sudhakar Singh47

TI__Mastermind 43730 points

Chappidi,

Unfortunately we have not dealt with these issues as we do not manufacture solar inverters. We are unable to offer any assistance in this matter.

regards
Manish Bhardwaj

0 chappidi bhima prasad over 6 years ago in reply to Manish Bhardwaj

Intellectual 505 points

Mitigation_of_DC_Components_Using_Adaptive_BP-PID_.pdfThank you Manish,

I think our query may be out of TI scope, However we are sure that with your guidelines it can be solved. We are requesting you to extend your support.We found a reference document (Mitigation_of_DC_Components_Using_Adaptive_BP-PID)for this problem as attached. In this document , on page no.9 in figure.3 he had used "DC current Extraction Using Double Integration". We find sine analyzer in TI/Lib_app looks like to be suitable for it as it is able to provide average value for given sine input. Can you please confirm to make use of it.

Regards,

Bhima Prasad.

0 Manish Bhardwaj over 6 years ago in reply to chappidi bhima prasad

TI__Mastermind 43730 points

I would have loved to research for you and help, but due to very pressing bandwidth items I am unable to devote time to this.

Good luck with your project.

0 chappidi bhima prasad over 6 years ago in reply to Manish Bhardwaj

Intellectual 505 points

dear manish,

problem is solved.

chappidi

0 Manish Bhardwaj over 6 years ago in reply to chappidi bhima prasad

TI__Mastermind 43730 points

Great! thanks for you update.

Sorry, for not being very helpfull on this one,

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CCS/TMS320F28377S: DC current injection issue in grid tie inverter