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Friday, April 08, 2011

First Aircraft Carrier Motor for the Queen

HMS Prince of WalesThis week saw delivery of the first Advanced Induction Motor (AIM) to shipbuilder BAE System’s Govan, yard for installation in the Royal Navy's Queen Elizabeth Class (QEC) aircraft carrier construction blocks, presently being built on the River Clyde in Scotland.

The ship has an Integrated Full Electric Propulsion (IFEP) system and uses four 20MW (27,000 hp) electric motors of a similar type to that used in the UK’s Type 45 destroyers which use only two, one per shaft.

The motors are driven by a Converteam VDM 25000 pulse width modulated converter which produces a variable frequency output allowing the shaft speed to be controlled across the full operating range, thereby eliminating the need for a gearbox.

The four motors, two per shaft, are located in three separate compartments for better damage control and suvivability.

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