Solutions for

shipbuilding

Electric drives and systems

2 | VEM solutions for shipbuilding

We are at home in the following branches:

Transportation

Machine and plant engineering

Steel and rolling mills

Cement and mining industry

Shipbuilding

Chemical, oil and gas industry

Water management

Renewable energy

Power plant technology

There are currently around 30 million electric machines

bearing the VEM badge in use around the world. They are

found aboard ships, in trains and trams, and in chemical

plants and rolling mills. VEM generators produce electricity

as hydropower and wind turbines. The VEM product range

embraces variable-speed electric drive systems, special

motors and special machines for outputs ranging from

0.06 kW to 60 MW, as well as a diversity of drive technology

and power generation components.

4 | VEM solutions for shipbuilding

Machines from the VEM shipbuilding portfolio

are found aboard vessels ranging from cruise liners,

via ferries to yachts.

VEM solutions for shipbuilding | 5

Das VEM-Portfolio im Schiffbau reicht von Kreuzfahrtschiffen

über F?hren und Forschungsschiffe bis zu Yachten.

It is against the background of 130 years of tradition that

VEM and its employees develop and manufacture generators

and motors for marine vessels all over the world. These include cruise liners, yachts, ferries, container ships, chemical

tankers and a variety of special-purpose vessels, which are

equipped with shaft and diesel generators, pod drives or

thruster and propulsion units.

Motors and generators with total weights up to 200 tonnes

are manufactured on a regular basis for all types of vessels.

Examples from the broad portfolio are propeller drives with

outputs from 7.5 to 10 MW for mega-yachts over 90 metres

in length, synchronous generators with outputs up to 30 MVA

or 30 MW propulsion units. Such machines are supplied for

use on board the latest generation of five star-plus luxury

liners, where they satisfy the highest demands relating to

low-vibration operation.

Broad output range

Our product range is rounded off with low-voltage machines

with outputs up to 5 MW for main and auxiliary drives.

These drives, too, are characterised by their extraordinary

operational reliability and long service life, effective and

environment-friendly operation, a high degree of efficiency

and ease of modification.

VEM drive solutions for

all types of vessel

VEM has been a leading manufacturer of marine electric drive technology for

decades. The group’s profound know-how is founded on more than 130 years

of experience in electrical engineering.

Such attributes are the key to universal application

scenarios for VEM low-voltage machines. In addition, we

supply also pole-switching motors in robust grey cast iron

versions for the winch drives on cargo vessels, or motors for

the air-conditioning systems on modern cruise liners. The

common success of all these products stems not least from

the high-performance, customer-specific engineering which

is typical for our whole shipbuilding portfolio – in strict

compliance with the applicable classification rules. We react

quickly and flexibly to individual customer wishes, promise

comprehensive customer service throughout our business

relationship, and guarantee punctual machine delivery

and on-site commissioning, even under the most difficult

conditions.

At home on the world’s oceans

VEM supplies its products to renowned system suppliers

and shipyards with decades of outfitting experience. They,

in turn, dimension the complete electric drive technology

for the vessels and work together with all leading shipbuilding companies in Europe, Asia and America.

6 | VEM solutions for shipbuilding

VEM motors and generators

Low- and

high-voltage

auxiliary

drives

Generators

(PTO and

diesel)

Shaft

generators

Thruster

drives

Compact

waterjacketcooled

motors

Asynchronous

propulsion

motors

Synchronous

propulsion

motors

Asynchronous and

synchronous

pod drives

Research and

special-purpose

vessels

Supply vessels

Ferries

Cruise liners

Mega-yachts

Container ships

Oil/LNG tankers

Navy vessels

For use on various types of vessel

VEM solutions for shipbuilding | 7

Motors for marine use must be manufactured to the highest

technical standards and in accordance with strict regulations. To guarantee compliance with the special environmental, operational and reliability demands, certification societies monitor work processes at the shipyard and in supplier

companies by way of audits and/or acceptance tests during

construction, overhauls and repairs to seagoing vessels.

Our design and engineering calculations departments go

one step further. They already work closely with certification bodies during the development and realisation of new

drive solutions, and are thus ideally prepared for successful

type approval testing. In this context, electric machines are

examined thoroughly under the varying conditions to be expected in later operation, and only receive the corresponding

certification once all prescribed criteria are met.

Marine certification

VEM has obtained certification for its shipbuilding

supplies from:

· Det Norske Veritas Germanischer Lloyd (DNV.

GL)

· American Bureau of Shipping (ABS)

· Lloyds Register of Shipping (LR)

· Bureau Veritas (BV)

· Russian Maritime Register of Shipping (RS)

· Registro Italiano Navale (RINA)

· China Classification Society

· Polski Rejestr Statkow

Further classification societies upon request!

Standard for VEM

8 | VEM solutions for shipbuilding

Marine motors

from VEM

A good choice

Millions of VEM low-voltage motors are operating reliably aboard cruise liners such

as those of the AIDA fleet, on container and cargo vessels, trawlers, tankers, dredgers

and many other special vessels, including the deep ocean research vessel “Sonne” of

the German Federal Ministry of Education and Research.

Depending on the task in hand, these motors drive compressors, anchor capstans

and mooring winches, lifting gear, the fans of cooling and air-conditioning systems,

or pumps for oils, fuels and service or extinguisher water. VEM low-voltage motors can

be supplied with various types of ignition protection for use as auxiliary drives in areas

subject to explosion hazards.

VEM low-voltage motors are used for both essential and non-essential services.

Standard and transnorm motors as auxiliary drives in

seawater-protected versions are designed to withstand the

special climatic and mechanical stresses of use at sea.

VEM solutions for shipbuilding | 9

To meet the high demands in terms of reliability and resistance to the

influences of a marine climate, the motors are supplied in grey cast

iron versions. This robust, low-vibration design, in combination with a

corresponding paint finish, also offers optimum corrosion protection, as

already proven by many thousands of installations.

In contrast to a standard motor, motors for marine use possess brass or

stainless steel rating plates and cable glands, and are designed with an

external earthing connection.

Individual combinations of foot and flange mounting enable VEM low-voltage motors to be used for a broad diversity of applications, also under

complicated installation conditions.

Technical data

Sizes: 56 – 450

Output range: 0.06 – 1 000 kW

Voltage/frequency: All common voltages, 50/60 Hz

Efficiency class: IE2 or IE3 up to IE4 to IEC/EN 60034-30-1

Type of protection: IP 55, optionally IP 56 to IEC/EN 60034-5

Type of cooling: IC 410, IC 411, IC 416 to IEC/EN 60034-6,

(IC 71W upon request)

Type of construction: IM B3, IM B35, IM B5, V1 and derived

types to IEC/EN 60034-7

Ambient temperatures: In accordance with the specifications of

the individual classification society, higher ambient temperatures

possible upon request

Explosion protection: Motors for use in Zone 1, Zone 2, Zone 21

and Zone 22 available as optional versions

10 | VEM solutions for shipbuilding

In addition to versions with IP 55 protection for installation

in closed machine rooms under deck, motors can also

be supplied with higher protection ratings (e.g. IP 56) by

customer request. Motors without external fans with degree

of protection IP 56 can also be used as drives for on-deck

lifting gear.

Growing environmental awareness and the opportunity for

sustained reductions in energy consumption are encouraging more and more ship owners to consider energy-saving

motors for their auxiliary drives.

EU legislation does not stipulate the use of energy-saving

motors on board ships, but the interest in such drives is

increasing significantly nevertheless. Customers can here

choose from an extensive range of proven energy-saving

motors from VEM.

Versatility

is the key

Auxiliary drives (low voltage)

VEM solutions for shipbuilding | 11

Transnorm energy-saving motor IE4,

1 000 kW

Three-phase motor in marine version,

size 132

Explosion-protected marine motor,

2.5 kW

Modifications with marine brake and

encoder upon request

12 | VEM solutions for shipbuilding

The energy demands to be met on seagoing vessels mean

that synchronous generators are essential. We supply such

machines in non-salient and salient pole versions in various

designs with welded housings and brushless excitation.

They are furthermore equipped with digital controllers and

corresponding monitoring systems in accordance with

individual requirements. Both antifriction roller bearings and

flanged slide bearings are used. In the case of generators for

higher outputs, we can also design the bearings as pedestal

bearings with the appropriate complex lubrication.

VEM generators

Fail-safe on-board power supplies

VEM additionally offers a complete generator series in 8-,

10-, 12- or 14-pole versions for voltages from 6 to 11 kV

and frequencies of 50 and 60 Hz, including the necessary

exciter units, for combination with low speed, high-output

diesel engines.

Technical data

Output range: 500 – 25 000 kVA

Voltage range: 400 – 11 000 V

Frequency range: 50/60 Hz

Speed range: 428 – 1 800 rpm

Number of poles: 4 to 14

Type of cooling: IC 8A1 W7

Type of protection: ≥ IP 44

VEM L?sungen für den Schiffbau | 13

Cost savings with high-power

VEM shaft generators

The VEM product portfolio also includes high-power shaft

generators with IP 44 protection and air water heat exchangers. In modern shipbuilding, the use of such generators reduces fuel consumption significantly compared to

conventional configurations with a separate diesel unit. They

are mounted directly on the main shaft between the diesel

engine and the propeller, and are able to generate all the

energy required on board. On container ships, for example,

where electricity demand is especially high to maintain the

cooling for refrigerated containers, our shaft generators are

greatly superior to fast-running diesel generators in terms of

energy efficiency. We design generators both for combination with passive rectifiers and for converter-fed operation.

In addition, they can function as either boosters or “power

take home” systems. The latter operating mode enables

the crew to compensate any failure of the main engine. The

shaft generator acts as a drive motor to bring the vessel

safely to the nearest port. In booster mode, on the other

hand, additional drive power can be transferred onto the

propeller shaft in certain navigation situations. The stators

of shaft generators are delivered to the shipyard, where our

service technicians can also mount the salient poles directly

onto the main shaft of the vessel, if required. This generator

series is designed with IP 44 protection and equipped with

an air-water heat exchanger.

Technical data

Output range: 500 kVA – 7 500 kVA /

480 kVA – 10 000 kVA

Voltage range: 400 – 6 600 V

Frequency range: 7 – 20 Hz

(on frequency converter)

Speed range: 40 – 200 rpm

Number of poles: 16

Type of cooling: IC 8A6 W7

Type of protection: IP 44

Shaft generator for marine use, up to 7,5 MVA

14 | VEM solutions for shipbuilding

Electric motors are used as drives for thrusters and pump jets

on almost all types of vessel. These systems are in the meantime standard features for larger vessels, and they also play an

important role for the exact positioning of pipe layers, cable layers

and floating cranes. The bow and stern thruster drives for such

special-purpose vessels deliver outputs up to 5 MW. Our motors are offered in IM 3011 and IM 1001 designs with a built-on

air-water heat exchanger for type of protection IP 54 or with open

circuit ventilation for type of protection IP 23. In addition to the VEM

standard series with grey cast iron housing, custom-welded housings can also be supplied upon request. The machines are intended

for operation either as direct drives (DOL) in S1 or S2 mode or in

conjunction with a frequency converter. A variable-speed controller

is imperative for positioning drives.

VEM thruster drives

When precise positioning counts

Thruster motor for marine use,

up to 5 000 kW

Technical data

Output range: 500 – 5 000 kW

Voltage range: 400 – 11 000 V

Frequency range: 50/60 Hz, variable on converter

Speed range: 900 – 2 100 rpm

Number of poles: 4, 6 or 8

Type of cooling: IC 01, IC 8A1W7

Type of protection: IP 54, IP 23

VEM solutions for shipbuilding VEM solutions for shipbuilding | 15

VEM water-jacket-cooled motors with outputs from

1 MW to 3.8 MW, for example for use in propeller

drives, are another very successful motor series. This

innovative drive concept was developed in cooperation with a leading manufacturer of propulsion and

manoeuvring systems. It combines the compact pod

design with the robust engineering of a standard

drive. The consistent use of 3D CAD systems already

at the design phase enables us to monitor every

aspect of the mechanical implementation and guarantees an optimum production process.

We have designed the motor such that it can be integrated vertically into the suspension tube of the propeller drive. Cooling is by way of a water jacket, which

makes optimum use of the installation volume but also

demands a sophisticated design. The same applies

with regard to ventilation and heat dissipation from the

motor. A complex bearing and the special oil supply

system of the gearbox guarantee a long service life.

At the same time, considerable testing is performed

to ensure proper sealing for the machine cooling and

bearing lubrication and thus the high availability of

the motor. The elimination of a separate above-water

gearbox increases the efficiency of the drive.

The best of two motor worlds

VEM compact water-jacketcooled motors

Benefits of the drive concept:

· Extremely compact unit with integrated drive motor

· Minimised installation costs at the shipyard

· Increased efficiency through elimination of a separate

gearbox

· External testing is possible before installation

· Simple access to the installed drive

Technical data

Output range: 1 – 3,8 MW

Voltage range: 690 V – 4,16 kV on converter

Frequency range: 5 – 100 Hz

Speed range: 600 – 1 200 rpm

Number of poles: 6 or 8

Type of cooling: IC 7A1W7

Type of protection: IP 54

Also

available with

permanent

magnet

motors

Water-jacket-cooled motors up to 3.8 MW

16 | VEM solutions for shipbuilding

Large slow-running asynchronous motors are becoming

increasing common as drive units for modern diesel-electric

vessels. Appropriate VEM machines are supplied primarily as

welded constructions and in various designs incorporating

slide bearings for quiet and low-vibration operation.

These motors can be configured either for operation on a

medium-voltage converter or with up to four separate winding systems for low-voltage converters for the higher output

range. This provides for economical operation of the unit.

It is furthermore possible to use a soft starter and to operate

the motor directly on the on board power supply. Minimal

space requirements and high availability are thus guaranteed.

VEM asynchronous

propulsion motors

High availability is decisive

Overview of possible drive variants:

· Operation on a PWM converter, in some cases with several

winding systems

· Soft start-up for smooth transition to maximum output

· Combination of direct and controlled drive (tandem)

Technical data

Output range: 2 000 – 15 000 kW

Voltage range: 400 – 11 000 V for direct drives,

500 – 6 600 V for converter-fed operation

Frequency range: 5 – 70 Hz

Speed range: 125 – 800 rpm

Number of poles: 8 to 24

Type of cooling: IC 8A6W7

SType of protection: ≥ IP 44

Asynchronous motor, up to 15 MW

VEM solutions for shipbuilding | 17

18 | VEM solutions for shipbuilding

Synchronous motors can be considered the standard drives

for electric vessel propulsion systems, especially where high

torques apply. They are often designed with two separate

winding systems and configured for operation on mediumvoltage synchronous converters. VEM machines are to be

found as drives on cruise liners, for example, where quiet

operation is absolutely essential. They are similarly an

ideal choice for mega-yachts. Another characteristic of

our synchronous propulsion motors is their extremely high

availability, a factor which is a top priority for installations

on board navy vessels.

VEM synchronous propulsion motors

All-purpose drives for high torques

Slow-running synchronous propulsion motors with separate

base frames and additional custom vibration damping play

a special role within our product portfolio. The variable concept for welded housing constructions enables us to adapt

the machine design to the particular installation requirements on board.

Technical data

Output range: 5 000 – 30 000 kW

Voltage range: 690 – 6 600 V

for converter-fed operation

Frequency range: 5 – 50 Hz (75 Hz)

Speed range: 120 – 200 rpm (1200 rpm)

Number of poles: 6 to 24

Type of cooling: IC 8A6W7

Type of protection: ≥ IP 44

Synchronous propulsion motor, up to 30 MW

VEM solutions for shipbuilding | 19

The VEM product range for modern marine propulsion

systems would not be complete without drives for pod

applications. These units are equipped with either synchronous or asynchronous motors, depending on the application

requirements and the conditions under which the vessel

operates. One prominent example of an asynchronous

unit is the SCHOTTEL Electric Propulsor (SEP) developed

in cooperation with propulsion specialists SCHOTTEL. This

machine is characterised by its compact, maintenance-free

rotor design, which forms the basis for economical pod-drive

operation. The motor consists of a laminated package for the

stator and rotor, mounted in direct contact with the shaft of

the rotor and the outer housing of the stator. Thanks to direct

cooling of the rotor with seawater and the custom design of

the rotor bars, motor operation is especially efficient. SEP

drives possess a small internal air-cooling circuit which also

provides heat to prevent condensation when the motor is

idle. Where higher outputs are required, synchronous motors

with electrical or permanent-magnet excitation are used.

The synchronous principle is well suited to accommodate

the larger air gaps necessitated by a relatively wide bearing

span. The insulation system of the drive motors is designed

for converter-fed operation, using low voltage for the lower

output range and medium voltage for higher outputs. The

preformed VPI-impregnated coils, which are specially

designed for non-sinusoidal voltages, combine mechanical

rigidity with optimum and even temperature distribution

within the winding.

VEM drives for

pod applications

Efficiency paired with robust design

Technical data

Output range: 1 000 – 20 000 kW

Voltage range: 690 – 4 500 V on converter

Frequency range: 5 – 50 Hz

Speed range: 100 – 300 rpm

Number of poles: 12 to 24

Also

available with

permanent

magnet

motors

20 | VEM solutions for shipbuilding

Highly efficient production processes and the outstanding

quality of our electric drive solutions for marine use are immediate outcomes of our specialised engineering know-how.

This development expertise has been built up over many

decades of experience in the field and can be considered the

key to our company’s success – and that, in turn, benefits

ship owners and outfitters all over the world.

The planning and implementation of especially quiet-running drives addresses today’s high demands relating to

passenger comfort. Elastic mountings and the decoupling

of structure-borne noise are just two of the possibilities to

ensure compliance with the strict limit values for luxury

yachts and cruise liners.

Thanks to the broad spectrum of diesel and shaft generators, motors for pod drives, as well as thruster and propulsion motors manufactured and supplied by VEM, users

all over the world are able to take to the high seas with

absolute confidence.

On course for

success with

VEM engineering

VEM solutions for shipbuilding | 21

Our Service –

Good reasons

for VEM

· Product range from single motors to complete drive

systems

· Own design engineers develop tailored solutions

· Flexibility thanks to a high proportion of in-house

manufacturing

· Fast response times

· Worldwide service availability

· 24h delivery service for stock motors (online

warehouse)

· 1 500 highly motivated and qualified employees

Made in Germany

· Durable and robust under extreme conditions

· Environment-friendly and energy-efficient

· Low life-cycle costs

VEM solutions for shipbuilding | 23

24 | VEM solutions for shipbuilding

VEM GmbH

Pirnaer Landstra?e 176

01257 Dresden

Germany

VEM Sales

Low voltage department

Fon +49 3943 68-3127

Fax +49 3943 68-2440

E-Mail: low-voltage@vem-group.com

High voltage department

Fon +49 351 208-3237

Fax +49 351 208-1108

E-Mail: high-voltage@vem-group.com

Drive systems department

Fon +49 351 208-1154

Fax +49 351 208-1185

E-Mail: drive-systems@vem-group.com

VEM Service

Fon +49 351 208-3237

Fax +49 351 208-1108

E-Mail: service@vem-group.com

www.vem-group.com

? 2018 Juniks Marketing GmbH

VEM-HS-NS-2018-06

Printed in Germany. Subject to change.

Photos: AIDA Cruises (Titel; S. 12, 18, 21), iStock,

MEYER WERFT | M. Wessels (S.7 –11, 14/15 )