Innovation Sparks DieselElectric Ferry
01 Jan 2005
The double ended ferry Dokter Wagemaker has been built by the Damen Group in Romania and was delivered last month for finishing to their Schelde yard at Vlissingen in the Netherlands. The vessel for Texels Eigen Stoomboot Onderneming NV (TESO) will be deployed from June on the Den Helder to Texel route.
Built to a design by the Bureau voor Scheepsbouw, the vessel features a redundant diesel-electric propulsion and energy concept divided over two separate engine rooms, two propulsion rooms, and two switchboard rooms.
The main supply system consists of a 6,000V network and a 400V network, of which the 6,000V network is fed by the 2 x 2 generators of 3,077 kVA which power the 2 x 2 propulsion thrusters forward and aft motors of 1,800kW each. Two transformers, each of 600kVA, feed the 400V network together with the auxiliary generator of 350kVA.
An innovative solution has been created by selecting two symmetrical 6,000V supply systems, forward and aft, connected together with so-called coupling switches. The system can operate as one or be split into two independent half systems. The 400V auxiliary supply system is supplied from the 6,000V using 600kVA transformers. This provides an electrical system that guarantees continuing energy supply to the thrusters and shipboard mains even under the most extreme circumstances. The thrusters are fed and controlled by the client specific direct water cooled Bakker Sliedrecht frequency converters, executed in a completely enclosed modular construction.
As well as supplying all electrical equipment, dedicated marine systems integrator Bakker Sliedrecht project managed the electrical and cable installation while the ferry was under build in Romania and is now overseeing commissioning in the Netherlands. A Bakker ship's automation system centrally monitors and controls the vessel's main tasks and machinery, with the centralised bridge control desk and nautical equipment enabling optimised availability.
The complete electric installation, including switchboards, transformers, control desks, cabling, etc will be turnkey delivered by Bakker Sliedrecht.
MJ Information No: 20208
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