Shore Power Options & Accessories
Single/dual shore cord selector
For harbours with low power availability a second cord can be connected to shore. Each cord input is independent so connection can be made to two completely independant shore supplies. For example Cord 1 208V and Cord 2 480V and the system will not only function correctly but maximum power from each cord input will be supplied. Connection to shore is completely automatic and input phase sequence between cord inputs is non essential.
Synchronisation for seamless transfer
Before a supply is connected to the main ship's bus, i.e. generator or shore power, the incoming supply must be synchronised. This can be controlled using the Shore Power Converter or Generator Synchroniser.
The VSP4 Shore Power Converter series has built-in synchronisation which can be used to enable seamless transfer of the ship's electrical load to and from the converter supply. Alternatively this can be controlled using the generator synchroniser which is a normal setup when bringing online a generator with the shore power already connected.
For yachts with two generators without any synchronisation equipment all VSP shore power converter can seamlessly transfer power from shore power to generator and generator back to shore power.
Single point extraction
High power units can be configured with a single point extraction point so heat generated by the Shore Power Converter can be extracted. Controlling the heat improves ventilation in the compartment space efficiently and effectively. For green technology yachts the extracted heat can also be used as a power source.
Parallel load sharing
Continuous AC power load sharing with onboard generators or converters
When synchronised and connected to a common AC bus the VSP Shore Power Converters can reliably operate with multiple power sources for continuous AC load sharing. A common method of control is voltage source with frequency droop. A fixed frequency output for isochronous control can also be supplied on request.
Shore Power Converter CleanNet combi
Power protection in and outside of harbour improving guest comfort
All the benefits of a standalone CleanNet Converter combined into a single Shore Power Converter system. The Shore Power Converter system has two independent outputs used to power the CleanNet and main ship's bus for when in and outside of harbour. All electrical appliances vulnerable to power disturbances such as lighting and entertainment equipment are powered from the CleanNet. The supply has a fixed frequency output so light flicker susceptible to halogen lights is protected.
The system operates as a black-box design. The change of input supplies, shore to generator and generator to shore is completely automatic and seamless and prevents any power supply disturbances onboard. Optimising and making full use of the Shore Power Converter when out at sea reduces the size and weight
Bow/stern thruster operation
All-in-one shore power and bow/stern thruster
Bow/stern thrusters are generally only operated when a yacht is manoeuvring in or outside of harbour and not used when the yacht is along side. This means that, for a great part of its life, it sits idle, particularly whilst the yacht is berthed on the dock. At the same time the yacht generally has the complex task of connecting its electrical systems to the large variety of marina supplies in the world. What was needed was a combination of the bow/stern thruster and shore power. Step forward Magnus with the solution.
Magnus Marine’s option uses the onboard Shore Power Converter(s) to deliver a pure sine wave (no harmonic distortion or electromagnetic interference and hence silent operation) from which to power the bow/stern thruster. The solution obviates the need for large and weighty inverters, creates no noise or electrical interference, saves money on equipment and creates little or no additional installation time.
The power capacity of the bow/stern thruster option is relative to the size of the Shore Power Converter system and is rated from 36kW to 700kW. With greater emphasis to improve onboard power quality built-in active front-end rectification comes as standard. This minimises onboard supply disturbances such as light flicker greatly improving guest comfort. With no cable length limitations to the bow/stern thruster the Shore Power Converter can be installed anywhere on the yacht, i.e. engine room or lazarette, maximising crew or guest accommodation areas.
As the size of yachts increase extended pressure is put on system manufacturers to increase power capacity and still reduce size and weight. By optimising and making full use of available equipment onboard the size and weight of the yacht electrical outfit is reduced. Furthermore the overall costing is lowered which is a welcomed approach for yacht builders and owners alike.
