The dynamic requirements for the frequency converters in propulsion application are low, compared to many other industrial applications.
Electric Propulsion on Icebreakers and Ice Going Vessels
But in ice-going vessels and icebreakers, the load variations may be significant and rapid, and this implies that the propulsion system must have high dynamic performance in order to avoid overloading of components and undesired tripping.
Electric propulsion has been used in a majority of new-buildings since the 80’s.
The basic configuration can be similar as for service vessels, with a redundant power generation and distribution system, although there will normally not be any DP requirement for the icebreakers.
As oil exploitation in arctic regions emerges, there is also an increasing demand for icebreaking and ice going field support, escort, and shuttle tankers.
The installed propulsion power may be in the range of 5-55MW, depending on ice breaking capability.