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In a three-phase half wave rectifier usually, the primary side of the transformer is delta connected because

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in Power Electronics by (27.1k points)
In a three-phase half wave rectifier usually, the primary side of the transformer is delta connected because

(a) it has no neutral connection

(b) we can get greater output voltage

(c) it provides a path for the triplen harmonics

(d) it provides better temperature stability

This question was posed to me during an interview for a job.

My question is taken from 3P-Diode Rectifiers-1 topic in section Diode Rectifiers of Power Electronics

1 Answer

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by (45.1k points)
Right answer is (c) it provides a path for the triplen harmonics

For explanation: The delta connected winding help circulating and eliminating the triplen (3rd order) harmonics.

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