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For the third quadrant operation of type E chopper

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+1 vote
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in Power Electronics by (27.1k points)
For the third quadrant operation of type E chopper

(a) CH1 is on

(b) CH2 and CH1 are on

(c) CH3 is on

(d) None of the mentioned

I got this question in an international level competition.

The doubt is from Type E Choppers-1 in portion Choppers of Power Electronics

1 Answer

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by (45.1k points)
Correct choice is (d) None of the mentioned

Explanation: For third quadrant operation of type E chopper, CH2 is kept on and CH3 is operated. First both CH2 and CH3 are on, and then CH3 is switched off thus the current freewheels through CH2 and D4.

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