In a ship diesel-electric power and propulsion system wit shaft propeller, the propellers are normally driven by variable-speed electric motors. The horizontal ship motors may be d... Read more
The direct on line ship motor will rotate with a speed directly determined by the ship network frequency. For propulsion, thrusters, pumps, winches, etc., there might be significan... Read more
Ship electric motor can be directly connected to the network, and such direct-on-line (DOL) motors are normally three-phase asynchronous, or induction motors. The ship asynchronous... Read more
The main difference between the marine and a land-based electrical power system is the fact that the marine power system is an isolated system with short distances from the generat... Read more
Despite the great interest in the application of electric propulsion to warships, there are quite few conventional surface warships with pure electric propulsion, but more are bein... Read more
Diesel electric propulsion and station keeping facilities are also used in vessels for operations in more shallow waters, such as dredgers and construction vessels, wind mill insta... Read more
For vessels with dynamic positioning (DP) as the main operating mode, such as diving support vessels, crane ships, and pipe layers, electric propulsion was early taken into use, fi... Read more
The concept of electric propulsion is not new, the idea originated more than 100 years ago. However, with the possibility to control electrical motors with variable speed in a larg... Read more
High Voltage work procedure Ballast Pump/DOL High Duty Compressors This is only a proposal how the procedure could look like, procedure must be established by the owner. It is extr... Read more
After the rather experimental applications of battery driven electric propulsion at the end of the 19th century took place in Russia and Germany, the first generation electric prop... Read more
