In an azipod propulsion system, how is three phase, frequency and voltage controlled power delivered to the synchronous propulsion motor stator windings?

Correct Answer: Option A — By the use of slip rings and brushes.

Translating power from the fixed shipboard distribution to a rotating azipod unit requires heavy-duty slip rings and brushes to transfer three-phase AC stator power. IEEE 45 standards govern these high-capacity current paths for continuous rotation under load.