On October 22, 2019 Anonymous commented:
Permanent Magnet Synchronous Motor (PMSM) technology is applied to propulsion motors to reduce the power of propulsion [1, 2].
Anonymous and Pete
Permanent Magnet Synchronous Motor (PMSM) technology is applied to propulsion motors to reduce the power of propulsion [1, 2].
Jeumont Electric and Siemens both manufacture
PMSM, i.e., MAGTRONIC and PERMASYN, respectively. The structures of MAGTRONIC and
PERMAYN are completely different. While MAGTRONIC presumably consists of two
armatures [3], PERMASYN currently
has one armature.
From the viewpoint of redundancy, PMSM with two armatures or a tandem combination of PMSM [4] with
one armature is desirable.
[Pete added further details about Permanent
Magnet Motors [5]. Note that it was announced today that Jeumont Electric had won a major contract
to install the electrics of Australia’s future Attack-class submarines [6]. Jeumont will almost certainly supply PMSMs for the Attack-class [7].]
[2] According to
Toshiba, PMSM reduced power consumption by 50% . In Anonymous calculations by
using the data of Victoria-class submarines (DC motor) and Soryu submarines (PMSM),
nearly the same result was obtained.
[3] One armature
is used at low speed range, and two armatures are used at middle and high speed
ranges. Even if one armature has failed, another armature can be used.
[4] Siemens seems to be developing tandem PERMASYN.
[6] on October
23, 2019 Naval Group announced https://naval-group.com.au/2019/10/23/subcontract-awarded-for-future-submarine-main-electric-propulsion-equipment/
“Subcontract Awarded For Future Submarine Main Electric Propulsion Equipment” “Naval
Group has signed a subcontract with Jeumont Electric (France) for the design of
the Main Electric Propulsion Equipment for the Attack Class Submarines. The
Main Electric Propulsion Equipment converts electrical power using Converter
Cubicles into mechanical power and then propels the Submarine through the
water...”
[7] "November 7, 2019 Jeumont Electric is...also the preferred
supplier of new generation permanent magnet motors for the Australian Future
Submarine Program." https://www.asc.com.au/news-media/latest-news/asc-enters-into-long-term-collaboration-with-jeumont-electric-of-france/
Anonymous and Pete
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