Driven by objectives for:
- Energy efficiency
- Meeting environmental regulations
- Flexibility in ships design
- electrical or hybrid propulsion
- electrical driven auxiliary consumers
- a combination of several types of generation and storage of electricity
have become common features in modern ships.
In order to connect, protect and control all these features, ‘smart electrical distribution grids’, either in DC or in AC, are inevitable. These grids on ships are extra challenging since ships operate mainly in isolation and sometimes connected to terrestrial power systems.
To meet the requirements on prime functionalities of the systems and the requirements on reliability, availability, life time and power quality, these grids are equipped with complex protection and control devices and systems.
Examples of ‘smart grids’ on hybrid ships are presented. Some protection, control and EMC-features are explained and evaluated.
Moritz Krijgsman – Alewijnse Marine/ HyPS