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Baltika – the Innovative Multi-Purpose Icebreaker

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Baltika – the Innovative Multi-Purpose Icebreaker Case story | VACON® NXP AC drives Baltika – the innovative multi-purpose icebreaker Baltika is the world’s first oblique with an asymmetric hull equipped with lifecycle costs. 18 VACON® NXP AC icebreaking vessel, classified as a three azimuth propulsors. This allows drives (72 A) are used for steering the multipurpose emergency and rescue the vessel to operate efficiently, ahead propulsors that enable the vessel to vessel. The main propulsion azimuth and astern, in up to 1-metre-thick ice move ahead, astern and obliquely. propulsors – delivered by Steerprop, levels. In oblique mode (sideways), the “Baltika is able to move sideways when from Rauma, Finland – are controlled vessel is able to clear a 50-metre-wide the AC drives control the azimuth by VACON® AC drives. In comparison to channel in up to 0.6-metre-thick ice. thrusters that keep the vessel’s position a traditional hydraulic steering system, Baltika features a very advanced oil correct and simultaneously steer it to modern AC drive control is more recovery system suitable for operation the right direction. Baltika can crash accurate, reliable and silent. Additional even in heavy waves; conditions where through ice while moving sideways benefits include smaller space oil recovery is very challenging and to make a wider ice channel for requirements and easy installation. demanding. larger vessels,” explains Aarno Niemi, Automation Manager, Steerprop. Designed by Aker Arctic Technology, Sailing even sideways based on the Aker Arctic ARC 100 The three main diesel generators The VACON® NXP AC drives are concept, Baltika has been deployed generate a total power of 9 MW. The installed in close vicinity of the in icebreaking, rescue and oil-spill- total propulsion power is 7.5 MW. propulsion thruster system and they combat operations in the Gulf of Steerprop has delivered mechanical communicate via a Profinet fieldbus. Finland since the spring of 2014. The propulsors that combine outstanding Thanks to the IP54 enclosure, the vessel represents completely new reliability and efficiency with drives are installed on the wall and no technology; a patented oblique design environmental-friendliness and low switchgear is needed. drives.danfoss.com Three roles and many benefits Motor + drive combination Inspiring cooperation Steerprop has used VACON® AC drives consumes energy only when the since 2001 in their vessel projects since 2001. “We azimuth propulsors are actively Steerprop, founded in 2000, use VACON® AC drives in three roles: to turned develops and manufactures azimuth control vessel steering and lubrication Improves the overall efficiency of propulsors for the global maritime pump motors and for controlling the propulsion system by 1–2% market. The Company has a focus on slipping clutches. In total, we have compared to hydraulic steering reinforced propulsors designed for the more than 2250 VACON® NXS and systems. This has a major economic demanding conditions of the Arctic VACON® NXP AC drives in the power impact during the entire lifecycle of Ocean. To ensure the durability and range of 3–205 A in our projects,” the vessel. reliability of its propulsors, Steerprop describes Mr Niemi. has conducted extensive research Ro-Ro/Passenger ship and development. “For us, a Finland- Compared to a traditional, hydraulic to Canada based AC drive manufacturer is a great steering system, AC drive control In addition to Baltika, another good benefit. We have developed together enables many benefits: example of Steerprop’s interesting many new items and features, and Easy installation and maintenance projects is F.A. Gauthier. This Ro-Ro/ it has been easy to get in contact Less need for maintenance Passenger ship, built by Fincantieri at with the best experts. For instance, Clear savings in space Castellammare di Stabia dockyard in redundancy is an excellent feature,” Mr Low noise level Italy, is to be delivered to STQ (Société Niemi explains. Accurate control of the azimuth des traversiers du Québec) in Canada. thruster, no crawling due to valve “This is Fincantieri’s first ship with an “Steerprop is one of our most leakage electrically steered azimuth propulsion significant customers in the Less mechanical wear system,” says Timo Ainasoja, Project marine and offshore segment in Oil or oil filters are not necessary in Manager. “Despite their doubts, we Finland. They want to be in the the azimuth propulsor’s steering managed to convince the dockyard’s forefront of technical develop- gear, which results in decreased R&D department that electric steering ment, which also inspires us to costs and maintenance needs is more accurate and quicker to do our very best,” Redundancy: always a minimum respond than a hydraulic one, which relates Harri Haikonen, Steerprop’s of two or more parallel motor + AC can cause inaccuracy and delays in Key Account Manager at Vacon. drive combinations in use. If one steering the vessel, especially when combination stops, the steering autopilot is in use. In sea trial tests Steerprop and their end customers system continues to operate. our propulsion steering system has have a positive user experience of operated without errors. Both the VACON®’s AC drives. ”We wouldn’t dockyard and the end customer use them if there were problems,” have been very pleased with the concludes Mr Niemi after 15 years performance,” Mr Ainasoja concludes. of experience with more than 2250 The vessel will be handed over to the VACON® AC drives. end customer in the spring of 2015. This case story was originally released before the merger of Vacon and Danfoss Power Electronics was fully completed on 15 May 2015. As a result, Vacon SP 60 PULL, Steerprop Arctic Azimuth Propulsor used as a company brand no longer on Baltika. Photo courtesy of Steerprop. exists and contact persons Cover photo: Baltika, measuring 76.4 m in length mentioned in the story may have and 20.5 m in breadth, is the first vessel designed to break ice obliquely. The oblique mode allows the changed. Future case stories on vessel to create a 50-m-wide channel in 0.6-m-thick VACON® products will be released ice, which is over two times wider than her breadth. This improves cost efficiency. Vacon has delivered on behalf of the new organiza- 18 VACON NXP AC drives to control Steerprop’s three tion – Danfoss Drives – which is 360-degree rotating propulsors, which allow the vessel to operate efficiently sideways, astern and part of the Danfoss Group. ahead. Photo courtesy of Arctech Helsinki Shipyard. Danfoss Drives, Ulsnaes 1, DK-6300 Graasten, Denmark, Tel. +45 74 88 22 22, Fax +45 74 65 25 80, www.danfoss.com/drives, E-mail: [email protected] DKDD.PC.915.A1.02 © Copyright Danfoss Drives | 2016.03.
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