Azipod® VI Series Product Introduction - 36 Pages

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Catalogue excerpts

Azipod® VI Series Product Introduction

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This Product Introduction provides system data and information for preliminary project planning of an Azipod podded propulsion and steering system outfit. Furthermore, our project and sales departments are available to advise on more specific questions concerning our products and regarding the installation of the system components. Our product is constantly reviewed and redesigned according to the technology development and the needs of our customers. Therefore, we reserve the right to make changes to any data and information herein without notice. All information provided by this publication...

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1.1 Azipod propulsion and steering 5 1.2 Type designation for the Azipod product 6 1.3 Electric propulsion and power plant 7 2 Azipod in ice-going ships 8 2.2 Azipod and Double Acting ship operation 8 2.3 Azipod VI design principles 9 2.4 Dimensioning to different ice rules 11 2.5 Reference list for ice applications 11 3.2 Azipod-specific delivered items 12 3.3 Ship-specific delivered items 12 4.2 Typical oil fill volumes per each Azipod 17 4.3 Typically required auxiliary power supplies 4.4 Heat emissions causing the heating of 4.6 Cooling arrangement for the propeller motor 22 4.7 Shaft line...

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Abbreviations ABS BV DNV ESWB IACS GA kVA LRS MSWB MW RMRS RPM 4 Azipod® VI Series Product Introduction not clarified within the document American Bureau of Shipping Bureau Veritas Det Norske Veritas Emergency Switchboard International Association of Classification Societies General Arrangement kilovolt Amperes Lloyd’s Register of Shipping Main Switchboard Megawatts of power Russian Maritime Register of Shipping Revolutions Per Minute

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The first Azipod® installation onboard was commissioned in 1990. By February 2010, the milestone of 5,2 million cumulated operating machinery hours has been reached. 1.1 Azipod propulsion and steering Azipod is a podded electric main propulsion and steering device driving a fixed-pitch propeller at a variable speed setting. The Azipod VI series main propulsion and steering system is the ice-operating variant of the classic Azipod product. Azipod propulsion is designed for the preferential use of the (directly driven) pulling propeller when driving in the Ahead direction. The Azipod V family of...

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1.2 Type designation for the Azipod product In the ship concept design stage, the following main designation is used. (A more specific type code will be allocated for the product during the advanced design stage). V = ”Classic” Azipod X = Next generation Azipod (in dedicated publications) C = ”Compact” Azipod (in dedicated publications) I = Design for operation in ice conditions O = Design for operation in open water (in dedicated publications) C = “Counter-Rotating Propellers” design ( - ” - ) The diameter of the propulsion motor (mm) “S”, “M” or “L” = Lenght of the (synchronous) propulsion motor...

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1.3 Electric propulsion and power plant In order to drive the Azipod propulsion system, the ship needs an electric power plant (not specifically discussed in this document). Alternator sets supply power to the 50 or 60 Hz installation of electric switchboards for distribution to all consumers onboard, including Azipod propulsion. Generally, ABB aims to deliver the power plant as well as the Azipod system. Our mechanical interface to the engine maker is basically standard, although dependent on the delivery of engines or e.g. gas turbines from the contractors. During the whole project, the basic...

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2 Azipod in ice-going ships 2.1 General Ice-going ships can generally be divided into two main groups: • Ice-strengthened ships Icebreaking ships Icebreakers and ice management ships are sub-cases of icebreaking ships. Ice-strengthened ships are designed for open water operation, but their hulls are strengthened and machineries often have more power compared to normal open water ships. The ability to move in ice is usually not the main objective for these ships, but open water characteristics is generally a very important part in the design. An ice class is chosen to guarantee the ship sufficient...

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2.3 Azipod VI design principles The most obvious benefit of electric propulsion in icebreaking ships is the torque performance of an electric motor. An electric motor and the associated variable frequency drive can be designed to provide maximum torque at low propeller speeds, and even when the propeller is stopped. The absence of a mechanical connection between the power plant and the electric motor driving the propeller enables an ideal icebreaker propulsion system. The propulsion motor used in the Azipod VI series is capable of delivering 100% propeller power in the bollard pull condition....

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Figure 2-2 Propeller power – bollard pull thrust diagram for the different frame sizes The benefits of electric propulsion are known to include: • Appropriate torque characteristics Dynamic response Ship dynamic positioning capability (where applicable) Further, the Azipod VI design offers the following benefits: • Enhanced maneuverability in heavy ice conditions – 360° steering provides full torque and thrust in any direction, full torque also available in reverse RPM Robust mechanical design – single short shaft and absence of bevel gears means that the torque capacity of the electric motor...

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2.4 Dimensioning to different ice rules The major classification societies have their own ice rules with ice classes for various ice conditions. With a few exceptions, the classification societies use the Finnish-Swedish Ice Class Rules (FSICR) for lighter ice classes in sub-arctic ice conditions. For Arctic operations, the major classification societies have their own rules and all have now adopted the unified IACS "PC" rules. Azipod VI product range is generally intended for ice classes 1A Super and higher. Azipod VI products have been classified to ice classes of all major classification societies,...

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3.1 General The Azipod Propulsion Module and the associated Steering Module are of fabricated steel construction. The Steering Module will be welded to the ship’s hull as a structural member. The submerged Propulsion Module incorporates a three-phase electric propeller motor in a dry environment, directly driving a fixedpitch propeller. The propeller is custom-designed by ABB to fit with the ship particulars confirmed by the shipyard. The Propulsion Module is to be bolted to the azimuthing part of the Steering Module. Each Azipod delivery usually consists of the following thirteen items: two (2)...

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