Which of these schemes is better, direct control or indirect control scheme for a DSTATCOM?

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Syed Ahmed Raza

I suppose you are talking about the theta-measurement and control using direct and indirect control. Then definitely direct control will be better.

Akhilesh Kumar Mishra

Direct control strategy is better for harmonic elimination.

Chintan Patel

Direct control method is better for every operating situation.

This one may be useful to you

https://www.computer.org/csdl/proceedings/isdea/2013/4893/00/06455566.pdf

Ravinder Kumar

Thank you Chintan Patel Ji

Yogesh Rohilla

In the case of DSTATCOM indirect current control method is preferred over direct control method. Direct control is used in STATCOM.