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How can the 3rd harmonic current be filtered in Thyristor-controlled reactor?

How can the 3rd harmonic current be filtered in Thyristor-controlled reactor? Correct Answer By connecting in delta

Thyristor controlled reactor (TCR):

The TCR is simply two anti-parallel thyristors connected in series with a reactor as shown in the figure.

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In three-phase systems, by connecting a thyristor-controlled reactor in the delta, the third harmonic and its multipliers can be filtered.

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