Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Dipl. Ing. Joachim Müller, SCHOTTEL GmbH

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Mechanical Z-Drive Pod-Drive Combi-Drive

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Loa 93.55 mB 21.00 m T 5.00 mV 13 knots

Supply vessel for BUE Marine

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Ice-going multipurpose vessel ARKONALoa 69.20 mBm 15.00 mT 4.50 mV 13 knotsBP 40 tIce class GL E4

SEP 2 SPJ 220

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Design: Ulstein PX105Owner: Bourbon Offshore AS – NorwayBuilder: Ulstein Verft – NorwayThruster: 2 x SCD 2020 Twin PropellerPower: 2 x 2500 kW / 825 r.p.m.

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric ShipsCombi Drive Type Range

Data Unit SCD 1515 SCD 2020 SCD 3030 max. Motor power [MW] 2.1 2,5 3.3 Motor speed [r.p.m.] 750 800 825 Propeller diameter [m] 2.5 2.6 3.3

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Vertical Drive Shaft

Coupling

E-motor

A-module

P-module

Gear

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

• Compact design (“shortened“ L-thruster inside the vessel)

• Low-cost Pod• Electric motor combined with the thruster as a single

unit• Reduced gear losses (only 3% mechanical losses

remaining)• Fewer mechanical parts (dispensing with upper gear)• No alignment of gear, shaft line and electric motor• Utilisation of proven mechanical parts from existing

thruster series

Installation of an SCD 2020 into a double-ended ferry

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Design: LNG MarineOwner: Fjord 1 – NorwayBuilder: Aker Brattvaag – NorwayThruster: 4 x SCD 2020 Twin PropellerPower: 4 x 2750 kW / 825 r.p.m.

SCD full scale measurements on „BF Fanafjord“

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Drehmoment Motor

Steuermoment, Messwelle zwischen Steuermotor und Koaxialgetriebe

LagertemperaturN-Seite

LagertemperaturD-Seite

E-Motor längs E-Motor quer

E-Motor vertikal

SCD längs

SCD vertikal

SCD quer

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Steering Torque Zigzag Test at 21 knots:Calculated: 355 kNmModel Test: 300 kNmMeasured: 310 kNm

Max design calculated: 485 kNm

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Third octave spectrum at 800 r.p.m., 2750 kWE-motor flange to SCD - SCD to well flange

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Abb. 4.1.10: TKW aus TVAE-Motorwelle

Abb. 4.1.12: TKW aus TVAGetriebe (Wechselmoment bezogen auf

Tellerrad)

Application factor kA:DIN 3991: 1.15Measured: 1.1

Class requirement: 1.0 – 1.1

Tkw from TVA E-motor shaft Tkw from TVA Gear wheel

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

For an objective comparison of the different thrusters, the gearfactors should be specified in the building specification.

Root safety 1.8

Flank safety 1.3

Application factor kA 1.15 – 1.25 (electric - diesel)

Face load distribution factor kβ 1.87

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric ShipsTriple lip seal

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric ShipsTriple lip seal improved design

Steering shaft seal

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric ShipsSCHOTTEL LEACON seal

Seal water side Leakage observation Oil sideRope protection

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

STANDARD SEALING

PROPELLER

LEACON SEALING

PROPELLER

OFFSHORE SEALING

PROPELLER

PROPELLER

STANDARD SEALINGfor most SCHOTTEL applications

LEACON SEALINGdeveloped for special applications

OFFSHORE SEALINGdeveloped for offshore applications

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Mechanical Z-Drive Pod Drive Combi Drive

Sheet 1 · November 2005 · Research and Development · Dipl.-Ing. Timo Raffauf

Propulsion Solutions for All Electric Ships

Mech. Z - Drive Pod Combi Drive

Initial costs 100% 150% 110%

Required installation space 100% 80% 80%

Mechanical efficiency 95% 99.9% 97%

Electrical efficiency 96% 94.0% 96%Basis: same power size, values incl. E-motor

“Make everything as simple as possible. But not simpler !”

Einstein