
15-6 Power Electronics and Motor Drives
One disadvantage of this technique is that the commutation sequence takes longer than for the out-
put current-based technique. Also, if an error is made, the input lines will suer a short circuit rather
than the output line open circuit for an error in the input current-based sequence. It is possible to pro-
tect against an output line open circuit, but not an input line short circuit. e advantage of the input
voltage-based technique is that the input voltage magnitudes must be measured for the modulation of
the converter, whereas the output current direction will have to be measured using a dedicate ...