The 3-phase voltage source inverter shown in Figure Q4(a) is controlled using sp

Question

The 3-phase voltage source inverter shown in Figure Q4(a) is controlled using space vector modulation technique. Switching pattern for a certain sample shown in Figure Q4(b) where t_a=8 mu s, t_b=46 mu s, t_c=46 mu s. Determine the vector sequence for the sample. Based on this sequence, determine the sector in which the space vector is situated in d-q plane. From t_a=13 mu s, t_b=l6 mu s, t_c=7l mu s and t_a=13 mu s, t_b=7l mu s, t_c=16 mu s, state the correct time durations for the next sample in the sector? Explain your answer.

Explanation / Answer

a) invertor switch operates in 1,3,5 and 4,6,2

b)t =ta + tb + tc /3

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