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P u b l i s h e d b y A B B M a r i n e , M a r c h 2 0 0 7

A new era in ship propulsion:

The first large size (154K) LNG carrier with

electric propulsion is now in oper ation.

A new era in ship propulsion has started with the first large

size (1!"# $%& carrier with electric propulsion entering into

operation'

he brea)through ca*e in 200+ when ABB was awar ded

the contract to supply electric propulsion syste*s for two

1100 ) 1100 ) 1100 ) 00 )

& & & &

-,- )., -0/z -,- )., -0/z

M M M M

1!,000*+ $%& carriers ordered fro* rance for &az de

rance (Proalys# and %" $ine3&az de rance (&aselys#'

hese ships would be the first big4size $%& carriers

to ta)e adantage of electric propulsion with a dual4fuel

!!0. Ballast BowPu*p (hruster

M M

M M M M M M

Ballast Ballast !!0.Pu*p Pu*p

diesel electric (5056# engine concept, and the $%& *ar)et argo Pu*p $5 /5 /5 $5 argo Pu*p

has awaited operational e8perience for $%& essels with

5 6lectrical Propulsion 9yste*' igure 1 shows the ABB

!!0.14! o*p 7o*p o*p 7o*p 4:

!!0.

6lectrical propulsion syste* for a typical $%& carrier' igure 1. !onfiguration of A""LNG! #lectrical $ropulsion.

&az de rance ; Pr oalys'



, March 2007

y change

e if the

showed excellent performance during

the sea-trials, especially when in

operation in constant power mode,

and during the crash stop test. ABB

Electric Propulsion System has been

well proven in other ship types for

more than ! years, although the

introduction of dual-fuel engines puts

additional demands on the propulsion

system compared to other ship types

with electric propulsion.

"#peration in $as-%ode giveshigher sensitivity to load variations

compared to running in &'# or

%(# mode), says *an-'redri+

&ansen, echnical Adviser -.$

/essel. $a0 de 'rance had a

re1uirement to operate the vessels

"only) on gas, and to minimi0e the

use of %(#. o meet this

re1uirement, the ABB propulsion

concept for the

$ vessel has two different

operation principles available2

3 SPEE( mode2 he propeller

4P% is controlled to a constant value

given by the bridge lever.

3 P#5E4 mode2 he propeller

power is controlled to a constantvalue given by the bridge lever.

6n SPEE( mode the propeller

power will fluctuate dependent on the

weather situation and7or ship turning,

B

constant

and

ion of

his

control

ncy

onse time

the 4P%

ccording

ition.

me

trial

P% of

g the

carrier atfigure, the

the ABB

nstant.

ectric

se1uence.

pulsion

tric bra+e

er from

r. his

med in a

with the

ystemthe

emely

n Pr ovalys

be seen

d within

pped

ual-'uel

-mode

se1uence.

ry of

em on

its

er for

on systemsfor $ carriers, with systems for

some thirty $ carriers already

delivered and nearly thirty on order.

"5e are only using standard and

well proven ABB e1uipment in our

systems, and all e1uipment in an ABB

$ Electric Propulsion pac+age is

manufactures and engineered by

ABB), says 4une A. ysebo, /ice

President Sales $ at ABB %arine,

"and with our worldwide service

capabilities we can offer a total product both yards and owners have found

attractive).

(ual-fuel diesel engines producing

electricity for the ship8s propulsion,

pumps and other consumers is

Published by ABB Marine

and the dual fuel engines ma

from gas mode to diesel mod

fluctuations are too great.

6n P#5E4 mode the AB

propulsion system will give a

load to the electrical networ+

ensure the total stable operat

the (' engines in gas mode.

is achieved by the fast (,9

of the ABB A9S:!!! fre1ue

converter, with a tor1ue resp

less than ; ms. 6n this mode

will be allowed to fluctuate a

to the propeller loading cond

'igure < shows the real-ti

curves from the Provalys gas-

for the Power, or1ue and 4

one propulsion motor durin

endurance test of one -.$<!!= load. As shown in this

electric power consumed by

propulsion drive system is co

Another feature of ABB el

propulsion is the crash stop

(uring a crash stop, the pro

motor will operate as an elec

for a short time, feeding pow

the propeller to the converte

reverse power will be consu

separate bra+ing resistor, and

ABB Electrical Propulsion S propeller can be stopped extr

fast, and from the real test o

presented in 'igure , it can

that the propeller was stoppe

The ABB Electric Propulsion System in ABB Marine, “but the fast DTC! seconds. he ship was sto

within > minutes, and the (

onboard Provalys implementing ABB8s control of the ABB A9S:!!! engines were operating in gas

A9S:!!! 're1uency 9onverters with fre1uency converter enables smooth during the whole crash stop

(irect or1ue 9ontrol ?(9@ has and trouble-free operation of the vessel 5ith the successful delive

proven during both sea and gas trial in any fuel mode.) the Electrical Propulsion syst

to fulfill and exceed the expectations he advantages of ABB Electrical Provalys, ABB has confirmed

and customer re1uirements for it. Propulsion Systems were demonstrated position as the leading suppli

he ABB Electric Propulsion system during the sea-trials of the Provalys electrical power and propulsi



Published by ABB Marine, March 2007

%NT#&'%# witho*ini+ue N,-ela/0hipping1anager /Gas -e rance

What is your impression/experience of

ABB’s workmanship during

en g i neer i n g , commissioning (ABB

General Performance towards wner!

and General Performance towards

G"# $

$a0 de 'rance 3 Energy did not

originally use ABB8s e1uipment,

therefore when 9hantiers de

8Atlanti1ue suggested ABB for the

vessel Provalys, our first reaction was

that we were

surprised at the change of supplier, and in

this context we were very cautious.5e made a thorough study of the

proposal to understand the reasons

behind the change, i.e. economiccosts.

6t was discovered in fact that ABB was

chosen due to its ability to supply the

more powerful propulsion e1uipmentfor Provalys, given her si0e, and that the

previous supplier 8s technology was at its

limit and would have had to significantly

increase their e1uipment. ABB offeredthe e1uipment as standard and had

proven technology.

5e were convinced ABB was a goodchoice, owing to $a0 de 'rance using

this type of e1uipment elsewhere in

the company 3 our main concern was

about the fre1uency converters which

would supply power to the two big

electrical motors driving the pr opellers.

hese converters had been studied in

detail by another service department

of $a0 de 'rance for groundfacilities, so we contacted them andthey came to the meeting with us

and ABB, and

they confirmed that the e1uipment was

considered safe and ready to be

installed.

What is G"#’s opinion of the risk of

the new system (%ank "esign and

"ual& #uel 'lectrical Propulsion!$

As to ris+ factors, there are no moredangers with this type of transport

than other vessels carrying crude, etc.

4egarding the fault discovered in $a0de 'rance, Energy, and its tan+s, therehas never been any ris+ of gas lea+ing, as

the primary membrane was perfectly

tight,

the fault was in fact in the gluing of the

individual layers8 secondary membrane

inside the tan+s. his membrane was ust above the tolerances for the

porosity criteria. his was nothing bad

but ust not 1uite good enough.

5ith $a0 de 'rance, Energy,

Pr ovalys and $aselys, we have opted to

use the

boil-off gas for fuel for the diesel

engines. rials have proved that thesystem shows to be more economicaland we hope

to achieve a ;= saving, and of course

reduce emissions by using gas into thoseengines instead of a traditional boiler and

steam turbine propulsion diesel.

What is G"#’s opinion of "ual # uel

'lectrical (perating ost and # uel

ost! compared to %raditional )team$5e hope to gain a ;= reduction in

operating costs. 6n sea trials this efficiency

was confirmed, but proper confirmation

will come from its use in long-term

commercial operations, but we are

confident to obtain this +ind of figure in

the future.

What is G"#’s opinion on "ual # uel

'lectrical Propulsion compared to the

other concept of * )troke with re&

li+uifaction plant$

he two systems are totally different.

5e have chosen to use gas for propulsion, other people have tried to

+eep gas for

re-li1uifaction and using heavy fuel for propulsion.

here are several aspects2 the

economic and the maintenance and the

ecology aspects. 4egarding the ecology

aspect, we find it is less polluting to

burn gas, and our study showed thatre-li1uifying the gas was not economical

3 we are convinced we have made the

right choice.

6n conclusion, we are happy with

the system from ABB and areloo+ing forward to the benefits in the

coming months and years.

$ower

%egatie Bra)ingPower during crash

stop

he syste* changesauto*atically to 9peed Mode

during rash 9top to get bestresponse

$ower onstant power *ode

&$1

Tor+ue

he 9peed ra*ps fr o*full ahead to zero intwenty seconds<

he speed reaches *a8negatie rp* (-0=#, andnegatie or>ue is reduced to)eep this li*it

&$1

Tor+ue

he 9peed is not constant in PowerMode' At this point the ship istur ning and therefore the speed isdecreasing' he or>ue is incr easingto )eep a constant Power

igure 2. $ro3als $ropulsion *otor power /&$ an- tor+ue at 16 propulsion power igure 7. $ropulsion *otor power/ &$ an-tor+ue at !rash 0top Test.

becoming a preferred solution for -.$

carrier owners. 9ompared to steam

turbines, the propulsion efficiency

is significantly higher, and less fuel

from the cargo is thus needed, and

significant savings can be

achieved.

5ith diesel-electric machinery the

efficiency when running at lower

power is easily optimi0ed, and high

tor1ue



Published by ABB Marine, March 2007

and operational flexibility is achieved

over the entire rpm rate. Also, when

comparing dual-fuel electric propulsion

?('EP@ with slow speed diesel

propulsion with a reli1uifaction plant

?SS(4@, the overall efficiency is better for the ('EP. his is owing to the fact that

the reli1uifaction plant has to be run

simultaneously with the propulsion plant. 5ith ('EP there are fewer

harmful emissions than with steam-

and slow speed diesel propulsion,

resulting in better environmental

friendliness.

Rune L ysebo

r une .lysebo@n o.ab b.com

mailto:[email protected]






A"" arine 0er3ice !oncept

for LNG !arriers

9ince 2000, *ore than !0 stea* turbine drien $%& carriers hae been

ordered with ABB *ediu* oltage switch gear onboard' ?n top of that,

*ore than 20 dual fuel diesel electric $%& carriers hae been ordered

with ABB electric propulsion syste*s' hile *any of these essels are

still under construction, ABB Marine 9erice is already thin)ing about the

ne8t phase in the life of these essels'

6n today8s $ shipping mar+et

operator margins are under pressure.Cnplanned maintenance costs, as

well

as off-hire due to e1uipment failure can

1uic+ly send a healthy balance sheet

into disarray. 4eactive maintenance,

fixing things when they8ve bro+en

down, simply isn8t good enough

anymore. Preventive maintenance

aims to prevent brea+-downs through

e1uipment health monitoring and

corrective action whenever re1uired.

Preventive maintenance is the cor e

of the ABB %arine Service concept.

his %arine Service concept is a

framewor+ of services, designed to

provide the highest availability of the

e1uipment. 6t allows vessel operators to

choose precisely those services that best

fit their particular re1uirements and to

accurately predict their maintenance

cost for the years to come. 6n close

cooperation with the operator the

e1uipment maintenance tas+s are

divided between ABB and the crew

onboard the vessel. his division of

labor also determines the fre1uency of

ABB service personnel visits onboard.

o ensure safe operation and

maintenance of the e1uipment, ABB

provides a number of e1uipment

specific crew training courses through

the ABB %arine Academy. 6n their

day-to-day maintenance activities

onboard the crew is supported by

e%S, the electronic %aintenance

Support ool. his computer based

interface coaches the crew through

each maintenance activity using videofootage and pictures of the actual

e1uipment, together with step by

step descriptions. 6t also provides a

direct lin+ to the relevant pages in the

e1uipment manual.

he preventive maintenance

program can be further enhanced bythe addition of remote diagnostics.

4emote diagnostics allows the ABB

to chec+ the health status and the

performance of the e1uipment online.

he service concept was originally

developed by 9raig %uirhead of

the ABB %arine Service 9enter

Aberdeen for his CD

customers. proved so successful

that it has n been expanded for

use in the gl service networ+.

he ABB %ari Service etwor+

consists of mor

! service professionals in <: m

service centers around the world,

providing round-the-cloc+ servi

to the international $ shipp

community.

Alexander Harsema-Mensonidesalexander .harsema@n o .ab b .com

in

6t

ow

obal

ne

e than

arine

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ing




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