Where did the electricity come from for the electric drive motors?
It had to be some kind of fossil fuel engine running a generator. Al On 10/4/2017 11:20 AM, ROBERT via EV wrote:
The electrification of ships has a long history. During WWII, diesel engines were in short supply. The US needed tanker ships because a large number were sunk by the German U2 boats. The T2 class tanker was the primary tanker. Since diesel engines were in short supply, the US started installing large electric propulsion motors. Even today some of these T2 tankers are still in service with the original electric motors. In the 1980's, I did some design work on the electrical control system on the USNS Redstone. The Redstone was a T2 tanker with the original electric motors and drive cubicle. The ship had been extended by 72ft by adding a section in the center. The Redstone was station in FL and monitored launches from Cape Canaveral/Kennedy. The ship was finally decommissioned in the 2000s and cut up for scrap. The electric motors and drive controls were built by GE and as far as I know they operated trouble free. I reviewed the controls for possible replacement; however, due to cost it was not done. In addition, they still worked OK. The controls were manually operated and the contractors made a huge noise when operating. To say the least, the electric propulsion system and drive was amazing. Great job for me. Most if not all ocean going cruise ships have AC/AC drives. The QE2 was converted in the 1980 to AC/AC drives. ________________________________ From: EV <ev-boun...@lists.evdl.org> on behalf of brucedp5 via EV <ev@lists.evdl.org> Sent: Wednesday, October 4, 2017 4:08 AM To: ev@lists.evdl.org Cc: brucedp5 Subject: [EVDL] EVLN: YARA Birkeland zero emission autonomous cargo e-ship (v) https://cleantechnica.com/2017/09/30/final-design-autonomous-electric-container-vessel-known-yara-birkeland-revealed/ [https://cleantechnica.com/files/2017/09/final-design-of-autonomous-all-e-150x150.jpg]<https://cleantechnica.com/2017/09/30/final-design-autonomous-electric-container-vessel-known-yara-birkeland-revealed/> Final Design Of Autonomous, All-Electric Container Vessel — Yara Birkeland — Revealed<https://cleantechnica.com/2017/09/30/final-design-autonomous-electric-container-vessel-known-yara-birkeland-revealed/> cleantechnica.com The final design of the all-electric, autonomous container ship known as the Yara Birkeland has now been completed, and testing has commenced at SINTEF Ocean’s 80 metre test tank facility in Trondheim, Norway. Accompanying this announcement, the Norwegian government enterprise known as ENOVA revealed that it will be providing support to the project in the form Final Design Of Autonomous, All-Electric Container Vessel — Yara Birkeland — Revealed September 30th, 2017 James Ayre [videos https://youtu.be/CK600K1tYUQ [https://i.ytimg.com/vi/CK600K1tYUQ/maxresdefault.jpg]<https://youtu.be/CK600K1tYUQ> Testing the YARA Birkeland<https://youtu.be/CK600K1tYUQ> youtu.be Model tank testing of the worlds first autonomous zero emission container feeder. Testing the YARA Birkeland https://youtu.be/OdWOAgc79aM [https://i.ytimg.com/vi/OdWOAgc79aM/maxresdefault.jpg]<https://youtu.be/OdWOAgc79aM> Autonomous ship model tank testing<https://youtu.be/OdWOAgc79aM> youtu.be Model tank testing of the worlds first autonomous zero emission container feeder, the YARA Birkeland. Autonomous ship model tank testing https://youtu.be/4Ogg4_ge0f8 [https://i.ytimg.com/vi/4Ogg4_ge0f8/hqdefault.jpg]<https://youtu.be/4Ogg4_ge0f8> YARA Birkeland zero emission autonomous container feeder<https://youtu.be/4Ogg4_ge0f8> youtu.be The first commercial autonomous vessel in the world, and also the first commercial zero ballast vessel. A game changer for the environment and for the shippi... YARA Birkeland zero emission autonomous cargo e-ship ] The final design of the all-electric, autonomous container ship known as the Yara Birkeland has now been completed, and testing has commenced at SINTEF Ocean’s 80 metre test tank facility in Trondheim, Norway. Accompanying this announcement, the Norwegian government enterprise known as ENOVA revealed that it will be providing support to the project in the form of a NOK 133 million ($16.7 million) financial contribution. While a full-scale version of the new design has yet to be revealed (obviously), the recent announcement was accompanied by the reveal of a 6-meter long, 2.4-ton model. The ship itself is expected to be delivered and to begin testing and operations in early 2019, with fully autonomous functioning expected to begin in 2020. Once in operation, the Yara Birkeland will displace the equivalent of 40,000 semi truck trips from Yara’s Porsgrunn fertiliser plant in southern Norway to the ports of Brevik and Larvik — and will thus curtail substantial greenhouse gas emissions. The press release provides more: “Following the announcement in May, the vessel has been designed at Norwegian design and engineering company Marin Teknikk. A cutting edge six meter long and 2.4 tons model of the final design using technology destined for the real ship, including a fully working thruster system from KONGSBERG, will now undergo comprehensive testing at SINTEF Ocean before construction of the full-scale vessel starts. The decision of where the vessel is to be built will be decided and disclosed by the end of 2017.” The President and CEO of KONGSBERG, Geir Håøy, commented on the news: “Initial tests of the model were successful, proving both concept and the technology. The testing at SINTEF Ocean marks an important milestone in the development. This vessel is important for the entire maritime industry, and Yara deserves praise for their initiative and commitment. Yara Birkeland is the start of a major contribution to fulfilling national and international environmental impact goals, and will be a global milestone for seaborne transportation.” KONGSBERG itself will be providing the Yara Birkeland’s electric drive, battery systems, propulsion control systems, and autonomous system sensors. [© Sustainable Enterprises Media] For EVLN EV-newswire posts use: http://evdl.org/evln/ EVDL EV News Archive - Electric Vehicle Discussion List<http://evdl.org/evln/> evdl.org EVLN - EV News Archive Edited by Bruce {EVangel} Parmenter: EVLN: home | help | archive | news | privacy policy | terms of service {brucedp.neocities.org} -- Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/ Electric Vehicle Discussion List | Mailing List Archive<http://electric-vehicle-discussion-list.413529.n4.nabble.com/> electric-vehicle-discussion-list.413529.n4.nabble.com Electric Vehicle Discussion List forum and mailing list archive. Welcome to the EVDL! 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