MARINE ELECTRIC PROPULSION DEFF

1. Marine & Offshore
MARINE ELECTRIC
PROPULSION: SOLUTIONS
AND PERSPECTIVES
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2. Electric Propulsion
A long history in the making
The first references of electric ship propulsion date back to the Twenties.
One of the most significant historical examples is represented by the Normandie.
When launched in 1932 Normandie was the largest and fastest ship in the world,
with novel design and lavish interiors.
This success was also due to our steam turbo electric propelled, 4 turbo electric
engines (160.000 hp – 200.000 hp max) it reached 32.2 (59.6 Km/h)
maximum speed.
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3. Electric Propulsion
Advantages
Electric ship propulsion is becoming more and more common in several fields of
application, offering the following advantages:
• optimisation of the power generation system
• reduction of noise levels
• reduction of space requirements
• reduction of manteinance requirements and costs
Thanks to these benefits the range of application of electric propulsion for various types of
ships is steadly growing in terms of quality and quantity.
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4. Electric Propulsion
Over a Century of Experience
We began supplying industrial systems in 1853 with a wide range of marine applications.
Today, NIDEC ASI is one the world’s leading suppliers of custom solutions
for marine propulsion systems.
Our capabilities and on-going innovation allow us to design solutions to specifically fit our
customers’ requirements.
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5. Electric Propulsion
Applications
NIDEC ASI supplies electric motors and generators to optimize overall efficiency and
performance of all type of ships, and to realize dreams and desires of its customers
Cruise vessels
Ferries
Research vessels
Navy vessels
Supply vessels
Chemical tankers
LNG carriers
Megayachts
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6. Electric Propulsion System
Typical Configuration
14000 kVA
514 rpm
14000 kVA 14000 kVA
514 rpm
514 rpm
14000 kVA 14000 kVA 14000 kVA
514 rpm
514 rpm
514 rpm
Alternators
Main switchboard
Propulsion transformers
Propulsion drives
Propulsion motors
20000 kW
142 rpm
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20000 kW
142 rpm
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7. Electric Propulsion System
Scope of Supply
Power
Control
Propulsion drive
Propulsion drive transformer
Prduction
Remote Control
Propulsion
Distribution
Main switchboard
Propulsion motor
Generator
Control & Monitoring
Generator
Harmonic filters (if necessary)
NIDEC ASI product
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8. Electric Propulsion
The right converter solution
New target power levels are being forecasted and planned to magnitudes which
were up to a few years ago unthinkable.
According to this growing need NIDEC ASI supplies different types of electrical
converters for new power requirements in all kinds of vessels:
DC converters
LCI or synchronous converter
PWM Converters (either LV or MV)
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9. DC Converter
Silcopac
The Silcopac is a high performance digital thyristor
converter for industrial applications, particularly
suitable for marine solutions.
Main characteristics:
Current ratings: 30–4000 A DC
Input voltage: 400 – 950 V AC
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• Two or four quadrant operation
• High dynamic response
• Auto-tuning
• Easy customization, even for complex functions
• Powerful diagnostic
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10. Propulsion System: showcases
DC Solutions – Medusa Project
from the collaboration between NIDEC ASI and
Wartsila was born a new type of research vessel, the
MEDUSA project.
The Oceanographic and Fisheries research Vessel
(AGS) is a state-of-the-art design, built for world wide
Oceanographic service including Fishing and
Geological research, complying with ICES report 209
for underwater radiated noise control.
Scope Of Supply:
• LV main alternators
• Propulsion system with 2 x
1500 kW 0/185 rpm DC
motors coupled in tandem
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Propelled by 3.000 kW low noise diesel-electric
propulsion, the vessel is equipped with one retractable
azimuth thruster and two tunnel thrusters. All of this
equipment will use NIDEC ASI motors.
The vessel is arranged for a number of fishery and
oceanographic research operations and will operate in
the Pacific Ocean offshore Chile.
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11. Propulsion System: showcases
DC Solutions - CEFAS Endeavour
Cefas Endeavour is an ocean-going fisheries
research vessel which is based at the port of
Lowestoft and is operated by the Centre for
Environment, Fisheries and Aquaculture Science
(Cefas).
It is used to support all aspects of Cefas activities
from fish stock surveys to launching autonomous
monitoring equipment.
The vessel has been in service since 2003.
Scope Of Supply:
• LV main alternators
• Propulsion system with 2
x 1500 kW 0/185 rpm DC
motors coupled in tandem
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12. Propulsion System with LCI
Typical Configuration
For those big vessels where propulsion powers ranging from 13 to 24 MW per shaft line are
required using synchronous motors, the most applied power converter type is the load
commuted inverter (LCI), or synchroconverter. The synchroconverter can be supplied with
12 or 24 pulse configuration depending on the ship’s electric network characteristics.
12 pulses configuration
24 pulses configuration
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13. MV LCI Converter
Silcovert S
Silcovert S is an LCI Thyristor based drive which is
ideal for wide constant torque operation range
Main characteristics:
• High starting torque and wide constant torque
operation range
• High accuracy
• Four quadrant operation
• High immunity to any line and “flying restart” after
a supply voltage loss or dip
Power range: 1 – 65 MW
Output Voltage: Air cooling up to 4500 V – Water cooling up to 11000 V
Output frequency: 5 – 95 Hz
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14. Propulsion System: showcase
Silcovert S - Crane and pipelay Saipem 7000
The Saipem 7000 was conceived in the mid 1980s
as a multipurpose offshore oil platform installation
vessel that would be able to install very large oil
production platform decks (known as integrated
decks) as well as the decks' supporting structures
(known as jackets) using its two very large fully
revolving cranes.
Scope Of Supply:
• Electric propulsion system
• Winch system
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It would also be able to support the offshore
completion of the platform by providing hotel and
workshop facilities for large construction crews.
Saturation Diving facilities would support subsea
connection work. The vessel's size and semisubmersible form would allow it to operate in
worse weather conditions than smaller and
conventionally shaped vessels.
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15. Propulsion System: showcase
Silcovert S - Cable layer Teliri
Teliri is a cable ship for the laying and repair
of under water cables.
Its mission consists in telecom cable laying
and associated trenching operations, telecom
cable maintenance and ROV support.
Scope Of Supply:
•N. 2 Generators 4MVA, 660V
• N. 1 Generator 2,9MVA, 660V,
SILCOVERT S, 2200kW, water-cooled
• N. 2 Propulsion Motors, 2200kW,
• N. 2 Bow Thruster motors, 750kW,
SVTL2k8KA, water-cooled
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16. LV IGBT Solutions
AC Drives GT 3000
Silcovert GT3000 is an IGBT – based
variable frequency drive with
unmatched levels of adaptability. This
efficient drive has proven to serve a
wide range of applications with the
highest levels of energy stability. The
GT 3000’s closed loop vector
algorithm meets the most demanding
torque application requirements.
Power range: 0.75 – 1200 kW
Voltage: 400-480 V – 525 – 690 V
Output frequency: up to 200 Hz
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17. Propulsion System: showcases
LV IGBT Technologies - De Poli, Gas tankers Marte & Venere
De Poli Tankers BV is a modern Dutch shipowning company based near the port of
Rotterdam, the Netherlands. De Poli is one of
the bigger commercial operator with a fleet of six
sophisticated IMO 2 chemical
tankers, two LPG tankers and one Ice classed
1A chemical/ethylene tanker.
The company expanded its fleet in 2004 with 2
LPG tankers of 3000 cbm. The De Poli gas
tankers meet the highest specifications in the
industry.
Scope Of Supply
1450 kVA propulsion transformers
LV PWM IGBT propulsion drives
1050 kW, 690 V, 720 rpm squirrel cage
propulsion motors
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18. LV IGBT Solutions
Typical Configuration
50 Hz 440 V
440 V
2x725kVA
8%
690 V
1050 kW
690 V
745 rpm
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440 V
2x725kVA
8%
690 V
690 V
690 V
1050 kW
690 V
745 rpm
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19. LV IGBT Solutions
Main Propulsion Drive
CONTROL
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IGBT MODULES
WATER-COOLING UNIT
INCOMING LINE
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20. MV IGBT Solutions
These IGBT Neutral-Point-Clamped PWM
drives are study in semplicity, offering easy
manteinance and a very user friendly drive
control.
Electrical connections Laminated bus-bar & dc caps
Heat sink Water pipes Firing cards
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IGBT
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21. MV IGBT Solutions
Silcovert TN
The Silcovert TN is a Neutral Point clamped Voltage Source
Drive with IGBT power devices and digital control for high
performance variable speed drives for induction motors.
Main characteristics:
• 12/24 pulse DFE or Active Front End
• NPC voltage source configuration
• PWM controlled output
• Water cooled
• Easy integration into automation solutions with serial
communication capabilities, digital and analogue interface
that are supplied as standard
Typical liquid cooled SILCOVERT-TN
converter coolant cabinet
Power range: up to 7200 KVA
Voltage: 3300 V
Output frequency: 0-70 Hz up to 140 Hz
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22. Propulsion System: showcases
Silcovert TN - Crane vessel Seven Borealis
Seven Borealis will measure 181 x 46
metres and with a depth of 16 metres. Its
draft will range between 7 to 11 metres.
The vessel is ship shaped, as opposed
to a semisubmersible design, and will be
able to perform a speed of 13-14 knots in
transit from one operating area to
another. Semisubmersible crane vessels
typically use at least twice the time.
Seven Borealis is designed to be used
for a range of operations, including
platform installation, deck installation,
spar deck installation, mooring
installation, subsea installation and
platform removal.
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Scope Of Supply:
• MV PWM IGBT NPC 3 levels
Silcovert-TN converter type SVTN
10K8 W33 DFE 24P, IP44 cabinet
without chopper system, water
cooled, 24 pulse line side reaction,
3000V output voltage, motor power
5500 kW, motor speed 745 rpm
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23. Propulsion System: showcases
Silcovert TN - Pipelay vessel Saipem Castorone
Saipem PLV is a pipelaying ship. It is a
maritime vessel used in the construction of
subsea infrastructure. It serves to connect
oil production platforms with refineries on
shore.
Scope of Supply:
•Thruster System
• MV PWM IGBT NPC 3 levels type
SVTN10K8 DFE xx P, IP44 cabinet
without chopper system, water cooled,
12 pulse line side reaction, 3000V
output voltage, motor power 5500 kW,
motor speed 720 rpm
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To accomplish this goal a typical pipelaying
vessel carries a heavy lift crane, used to
install pumps and valves, and equipment to
lay pipe between subsea structures.
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24. Propulsion System with Silcovert TN
Main Drive
CONTROL
AND
AUXILIARIES
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INVERTER
INCOMING
LINE
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COOLING
SYSTEM
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25. MV IGCT Solutions
IGCT (Integrated Gate Commutated Thyristor) module
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IGCT semiconductors are the building blocks of
a new generation of drives used for marine
propulsion.The development of IGCT based
voltage source inverters has given the chance
of opening and improving the way to a further
increase of ship electric propulsion
applications.
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26. MV IGCT Solutions
Solcovert GN
Silcovert GN is a Neutral Point Clamped
Voltage Source Drive with IGCT power devices
and fields oriented control technology for
synchronous and induction motors.
Silcovert GN
Power range: up to 24000 KVA (higher power on request)
Voltage: 3300 V
Output frequency: 10 – 65 Hz up to 100 Hz
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27. Propulsion System with Silcovert GN
Showcases - Amphibious Transport Ship Johan De Witt
Scope of Supply:
MV PWM IGCT NPC 3 levels type
SVGN9K0 DFE 24 P, IP44 cabinet with
chopper system, water cooled, 24 pulse
line side reaction, 3000V output
voltage, motor power 5500 kW
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Johan de Witt is a Landing Platform Dock (LPD)
in use by the Royal Netherlands Navy. The main
mission of the Johan de Witt will be the transport
and disembarkation of a fully equipped battalion
marines to the objective area using organic
landing assets such as helicopters and landing
craft or existing port facilities.
With the required capabilities the ship is also
well suited for secondary missions such as
military sealift or disaster relief.
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28. Propulsion System with Silcovert GN
Showcases
Crane and pipelay Pieter Schelte
Pipelay Audacia
Scope of Supply:
N.12 Variable frequency converters Silcovert-GN
10k0 DFE 24P , IP54.
Scope of Supply:
•Electric propulsion system
• N.4 Variable frequency converters Silcovert-GN with 12 pulses
diode bridge front end and 3 phase IGCT technology
Ice breakers Hull 327 and 328
Scope Of Supply:
•N.2 Variable frequency converters Silcovert-GN 10k0 DFE 12P for Hull 327
• N.2 Variable frequency converters Silcovert-GN 20k0 DFE 24P for Hull 328
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29. Silcovert GN
Typical Configuration
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30. Water-Cooled System
Advantages




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Drastic reduction of thermal losses in the electrical cabinet room
Reduced noise level
Reduced cabinet dimensions
Higher cabinet protection degree available
Increased reliability (hot standby pump)
Water cooling main circuit
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Water-cooling System
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31. Marine Applications
Custom System Design
Our field technicians provide constant feedback to our engineering team. They work in order
to guarantee a full life cycle to your components and to meet or exceed ship designers’
targets in terms of space, noise levels and performance.
Our integrated engineering process and design standards has lead to advances in:
• Isolation distances
• Special mechanical fixings for vibration, pitching and rolling
• Special and certified materials selection
• Anti-vibration cubicles mounting (shock mounts) when necessary
• Electronic cards tropicalization
• In-house climatic chamber tests of control racks and aux.
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32. Drive & System Testing Capabilities
NIDEC ASI provides reliable, safe and tested solutions for marine applications. Our quality
assurance program covers all aspect of design, material procurement, manufactoring and
testing. This program meets the requirement of international standards such as ISO 9001.
All the machines manufactured in our plant undergo individual and complete routine tests.
Special test can be performed upon request.
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