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For a three phase bridge inverter in the 180° mode, ___________ devices are conducting from 120° to 180°.

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For a three phase bridge inverter in the 180° mode, ___________ devices are conducting from 120° to 180°.

(a) T1, T6, T5

(b) T2, T6, T5

(c) T1, T6, T5

(d) T1, T2, T3

I got this question in an online interview.

This question is from 3-Phase Bridge Inverters-1 topic in portion Inverters of Power Electronics

1 Answer

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by (45.1k points)
Right answer is (d) T1, T2, T3

Easiest explanation: Group I

T1

T1

T1

T4

T4

T4

T1

T4

Group II

T6

T6

T3

T3

T3

T6

T6

T6

Group III

T5

T2

T2

T2

T5

T5

T5

T2

Step No

I

II

III

IV

V

VI

I

II

Each step consists of 60°. 120° to 180° will be step III.

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