The four-quadrant dual operation requires
(a) Two full converters in series
(b) Two full converters connected back to back
(c) Two full converters connected in parallel.
(d) Two semiconverters connected back to back
(a) Two full converters in series
(b) Two full converters connected back to back
(c) Two full converters connected in parallel.
(d) Two semiconverters connected back to back