The status of HTS ship propulsion motor developments

Kalsi, S.S.; Gamble, B.; Snitchler, G.; Ige, S.O.

doi:10.1109/pes.2006.1709643

Cited by 52 publications

(21 citation statements)

References 6 publications

(6 reference statements)

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“…The increased magnetic field also improves power density. Estimates of magnetic shear stress in excess of 300 kPa have been made, and superconducting motors have been built and tested to as high as 36.5 MW [8]. Figure 20 shows a cartoon drawing of a superconducting motor sized for propulsion of a combatant ship [9].…”

Section: Superconducting Synchronous Machinesmentioning

confidence: 99%

Motors for Ship Propulsion

2015

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Abstract-Electric propulsion of ships has experienced steady expansion for several decades. Since the early 20 th century, icebreakers have employed the flexibility and easy control of DC motors to provide for ship operations that split ice with back and forth motion of the ship. More recently, cruise ships have employed diesel-electric propulsion systems to take advantage of the flexibility of diesel, as opposed to steam engines, and because the electric plant can also be used for hotel loads. Research vessels, ferries, tankers, and special purpose vessels have also taken advantage of increased flexibility and fuel efficiency with electric propulsion. Today, the US Navy is building an 'all electric' destroyer to be named 'Zumwalt', that employs two induction motors for propulsion. There are several different classes of motors that might be considered for use in ship propulsion, ranging from DC (commutator) motors through conventional induction and synchronous motors to permanent magnet synchronous machines, doubly fed machines and superconducting AC and Acyclic Homopolar machines. This review paper describes features of some of the major classes of motor that might be used in ship propulsion.

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Section: Superconducting Synchronous Machinesmentioning

confidence: 99%

Motors for Ship Propulsion

2015

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“…In this design, the whole rotor, including coils wound with BSCCO HTS conductor, was cooled down to 35K using a closed cycle neon heat pipe concept [37]. Under contract with the Office of Naval Research, AMSC built two prototype motors: a 5MW and 230rpm motor [38], and a 36.5MW and 120rpm motor [39]. The motors were constructed as power compact ship propulsion alternatives to existing ship propulsion concepts [38].…”

Section: Hts Machine Demonstratorsmentioning

confidence: 99%

“…Under contract with the Office of Naval Research, AMSC built two prototype motors: a 5MW and 230rpm motor [38], and a 36.5MW and 120rpm motor [39]. The motors were constructed as power compact ship propulsion alternatives to existing ship propulsion concepts [38]. The armature on these motors was liquid cooled with dielectric insulating oil.…”

Section: Hts Machine Demonstratorsmentioning

confidence: 99%

Development of superconducting wind turbine generators

Jensen

Mijatović

Abrahamsen

2013

Journal of Renewable and Sustainable Energy

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In this paper the commercial activities in the field of superconducting machines, particularly superconducting wind turbine generators, are reviewed and presented. Superconducting generators have the potential to provide a compact and light weight drive train at high torques and slow rotational speeds, because high magnetic fields can be produced by coils with very little loss.Three different superconducting wind turbine generator topologies have been proposed by three different companies. One is based on low temperature superconductors (LTS); one is based on high temperature superconductors (HTS); and one is a fully superconducting generator based on MgB 2 . It is concluded that there is large commercial interest in superconducting machines, with an increasing patenting activity.Such generators are however not without their challenges. The superconductors have to be cooled down to somewhere between 4K and 50K, depending on what type of superconductor is employed, which poses a significant challenge both from a construction and operation point of view. The high temperature superconductors can facilitate a higher operation temperature and simplified cooling, but the current price and production volumes prohibit a large scale impact on the wind sector. The low temperature superconductors are readily available, but will need more sophisticated cooling.Eventually the CoE from superconducting wind turbines, with particular emphasis on reliability, will determine if they become feasible or not and for such investigations large-scale demonstrations will be needed.

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“…The motor possesses the same stator construction as conventional motors whereas the rotor is formed by electromagnets made with high temperature superconducting wires. The motor has several advantages compared to the conventional ones: is more compact, lighter, more efficient and quieter (KALSI, 2004); its efficiency is maintained almost constant for all load variations unlike conventional motors (KALSI, et al, 2006;SNITCHLER, GAMBLE and KALSI, 2005). Nevertheless, since the superconductor material requires temperatures around of 32K 21 in order to maintain the superconductor characteristics, the motor is required to be cooled, which significantly complicates the installation and limits its implementation in commercial vessels.…”

Section: Electric Propulsion Motorsmentioning

confidence: 99%

“…Nevertheless, since the superconductor material requires temperatures around of 32K 21 in order to maintain the superconductor characteristics, the motor is required to be cooled, which significantly complicates the installation and limits its implementation in commercial vessels. The motor is not commercially available yet, but several researches are in progress, which have already developed 5MW and 36.5MW prototypes for testing, aiming to be used in future US (United States) Navy Destroyers and in podded propulsion units (KALSI, et al, 2006;KALSI S., 2004;OKAZAKI, et al, 2006;WOODRUF, et al, 2005;SITCHLER, GAMBLE and KALSI, 2005).…”

Section: Electric Propulsion Motorsmentioning

confidence: 99%

A methodology to select the electric propulsion system for Platform Supply Vessels (PSV).

Morales¹,

Andrés²

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Este exemplar foi revisado e corrigido em relação à versão original, sob responsabilidade única do autor e com a anuência de seu orientador. ABSTRACTThe present work proposes a methodology to define the electric propulsion system for PSVs. This methodology was applied to a case study: the conceptual design of a PSV for operation at the pre-salt fields at Santos basin. First, four different alternatives of electric propulsion systems for the PSV are presented and sized. The first one has induction motors as main propulsion motors, the second one has synchronous motors as main propulsion motors; the third and fourth alternatives are the same as the first and second, respectively, with a batteries bank connected to the main switchboard.

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The status of HTS ship propulsion motor developments

Cited by 52 publications

References 6 publications

Motors for Ship Propulsion

Motors for Ship Propulsion

Development of superconducting wind turbine generators

A methodology to select the electric propulsion system for Platform Supply Vessels (PSV).

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