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Calculate the line voltage for 3-∅ 180° VSI if the value of DC supply is 22 V.(a) 18.52 V(b) 18.12 V(c) 17.96 V(d) 15.48 VThis question was posed to me during an online exam.My question comes from Solid-State Switching Circuits topic in chapter Introduction to Solid-State Switching Circuits of Electric Drives

Answer»

The correct option is (c) 17.96 V

Easy EXPLANATION: The line voltage for 3-∅ 180° VSI is (√2÷√3)×VDC=.81×22=17.96 V. In 3-phase 180° VSI each phase CONDUCTS for 180° and only TWO switches from different phases conduct at a single time.



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