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a small marine engine that may also serve as a generator when running; or; a diesel generator that may power (typically via a 12v or 24v battery pack) an electric motor that drives its own propeller shaft and propeller. In either case, the wing engine's propeller will be off-centre.
An example of integrated electric propulsion in the Type 45 destroyer (GT: gas turbine; DG: diesel generator) Integrated electric propulsion (IEP), full electric propulsion (FEP) or integrated full electric propulsion (IFEP) is an arrangement of marine propulsion systems such that gas turbines or diesel generators or both generate three-phase [1] electricity which is then used to power ...
The rotor of a turbo generator is a non-salient pole type usually with two poles. [5] The normal speed of a turbo generator is 1500 or 3000 rpm with four or two poles at 50 Hz (1800 or 3600 rpm with four or two poles at 60 Hz). The rotating parts of a turbo generator are subjected to high mechanical stresses because of the high operation speed.
This includes some powered by batteries which are recharged from shore, and some shore-powered by electrical cables, either overhead or submerged (no batteries). On November 12, 2017 Guangzhou Shipyard International (GSI) launched what may be the world's first all-electric, battery-powered inland coal carrier. The 2,000 dwt vessel will carry ...
A CODLAG system employs electric motors which are connected to the propeller shafts (usually 2). The motors are powered by diesel generators. For higher speeds, a gas turbine powers the shafts via a cross-connecting gearbox; for cruise speed, the drive train of the turbine is disengaged with clutches.
The General Electric LM2500 is an industrial and marine gas turbine produced by GE Aviation.The LM2500 is a derivative of the General Electric CF6 aircraft engine.. As of 2004, the U.S. Navy and at least 29 other navies had used a total of more than one thousand LM2500/LM2500+ gas turbines to power warships. [1]
In one instance, U.S. Marines in Japan had to ship engines back to the U.S. for repairs, and in another, the Navy had to fly contractors out to ships at sea to perform simple repairs, according to ...
Electric power for the propulsion motor is conducted through slip rings that let the Azipod unit rotate 360 degrees about the vertical axis. [8] Because Azipod units utilize fixed-pitch propellers, [ 9 ] power is always fed through a variable-frequency drive or cycloconverter that allows speed and direction control of the propulsion motors.
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