In a 3 phase VSI out of eight valid states, the number of valid states that produce zero ac line voltages is/are_________?
Correct answer: B. two
- A. One
- B. two
- C. Three
- D. Four
Explanation
The switching states 000 and 111 connect all three inverter legs to the same DC bus rail, producing zero line-to-line voltage. Hence two of the eight states are zero states.
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