• Drydock, refit & repair periods.
• Short or long term lay up.
• In harbours where exhaust & noise emissions are tightly controlled, preventing the use of generators.
• Owner comfort in the case of Mega Yachts.

However, due to the differences in voltage & frequency between shore based and ship based electrical networks this is not always possible. In fact many ship repair yards have to supply dedicated containerised diesel gensets specifically for supply of shore power. These are expensive to run, noisy and require regular servicing & maintenance.

Rotary converters (M-G) sets can be used but are large, expensive and inflexible.

Energy Gurus can provide a range of solid state voltage & frequency converters that enable any shore based power supply to be converted to the correct voltage & frequency to enable the ship’s electrical network to be supplied via the shore supply.

The converters can be either permanently shore based, portable (containerised) or installed on the ship and are fully electronic and maintenance free.

We can also provide a range of constant frequency converters that convert the main engine shaft alternator output (variable) to constant frequency & voltage output to enable…

• Shaft alternators to run in parallel with diesels and share load.
• Shaft alternators to be paralleled together and share load.
• Shaft alternator to deliver constant voltage and frequency regardless of main engine speed variation.

This can bring many benefits to the owner in terms of improved redundancy, lower operating costs, reduction in running hours of auxiliary machinery and increased flexibility.

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Energy Gurus are Approve UK marine and offshore partners for ABB , Danfoss and Siemens from design, class approval and engineering to construction, installation and commissioning.

Electric propulsion now dominates many vessel types including cruise ships, offshore construction & dive support vessels, drilling vessels, icebreakers and is gaining in popularity for large offshore support vessels and LNG carriers.

Electric propulsion can bring many benefits including…

• More flexibility in vessel lay out.
• Improved operational efficiencies.
• Better levels of redundancy.
• Lower emissions.
• Lower levels of noise and vibration.

With our marine drives partner – ABB, Energy Gurus can provide complete retrofit and upgrade solutions for Main Propulsion and Thruster Drive Systems including specification, design, installation & commissioning.

We also have the in-house capability to advise on and integrate harmonic mitigation measures into the design to ensure that the drive system does not disturb the main electrical network and cause problems with other sensitive equipment.

The post Electric Propulsion Drive Systems appeared first on Energy Gurus.

We supply, install and commission temporary power solutions for all marine & offshore applications including…

• Cover for failure of existing auxiliary engines until repairs can be completed.
• Offshore construction projects such as ROV, Trenching, Pipelay, Umbilical and Power/Telecoms Cable installation.
• Back up and standby machines to improve system redundancy.
• Power capacity upgrades.

When fitting containerised power packs in marine applications, careful specification, selection and installation is required to ensure compliance with class and flag state rules, otherwise vessel detention is a real possbility.

In many cases the temporary power pack is required to replace an existing failed machine. It must be able to work satisfactorily in parallel with the remaining generators and be integrated into the main switchboard & control systems to enable operation from the ECR as if it were a permanent machine.

We have a full range of control and interface solutions that enable us to acheive this performance and to provide staisfactory active, reactive and transient load sharing between the power pack and the vessels generators.

We can demonstrate a strong track record of providing trouble free approved installations and also of conversion of existing problematic installations into fully approved semi-permanent solutions.

We can also carry out servicing, electrical and mechanical repairs and custom containerisation of gensets to suit customer requirements.

The post Temporary Power Generation Solutions appeared first on Energy Gurus.

• In situ cleaning.
• Workshop cleaning and re-insulation.
• Rewind & machining.
• Spare parts supply.
• Electronic repair and testing of AVRs.
• Design and installation of replacement excitation solutions to replace obsolete equipment.
• Complex faulfinding & troubleshooting.

We also provide custom design solutions for replacement of obsolete static and rotary excitation systems on DC ‘Ward Leonard’ drive systems for proplusion, cranes, winches and other high power DC variable speed drive applications.

Our team of very experienced technicians operate worldwide to resolve all types of generator and motor problems and we’re often called after many others have failed to find a solution.

The post Generator & Motor Excitation System Conversions, Repairs & Retrofit Solutions appeared first on Energy Gurus.

However, the replacement machine is often dissimilar to the remaining or original machines which it must work in parallel with, which can present significant operational problems.

This is particularly applicable when trying to use newer machines with electronic governors and sophisticated electronic exicitation against older types with hydro-mechanical governors and static exciters.

Skill, experience and knowledge are required to overcome these problems in order to ensure satisfactory performance and to ensure that active, reactive and transient load sharing performance is acceptable when the replacement machine is working in parallel with the existing machines.

We have a strong track record of successful completion of many such projects, overcoming difficult technical obstacles and in some very challenging circumstances with the vessels in service and have a wealth of experience including…

• Diesel & turbo alternators.
• Retrofit alternator excitation solutions & modifications.
• Retrofit electronic engine governor/speed control solutions & modifications.
• Matching of newer electronic excitation systems to older static & compound systems.
• Matching of electronic governors to hydro-mechanical governors.
• Symmetrical & asymmetrical load sharing and % load sharing between machines of different sizes.
• Interfacing to and modification of existing safety systems & control systems.
• Interfacing to main switchboard.
• Interfacing to existing power management systems.
• Power management system modification & software modification.

We provide a full turnkey package, even down to preparation and submission to classification society of design drawings and management of the complete class approval process.

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