www.nidec-asi.com

SHIP TO SHORECONNECTION

FOR NAVY BASE

Energy Infrastructure

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Frequency conversion shore - ship

Shore connection

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The Italian Navy naval base “Mar Grande” inTaranto, opened in June 2004, was created toimprove efficency and to reduce the impact on thecity of the old Naval Base.

The Navy Station is placed over an area of about 60hectares and it is the most magnificent achievementof the Italian navy in the post-war period.

NIDEC ASI has contributed to this project byproviding the electric system of the 50/60Hzconversion stations.

Introduction

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The conversion system is made by:

• qty. 10 rotating converter systems complete with:

• excitation systems

• devices for starting/network connection

• MV switchboards

• Supervision and control system

Scope Of Supply

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The rotating converter systems are composed by:

• Qty.10 Motor-Generator sets 3000 kVA each, with a 10 pole synchronous motorand a 12 pole synchronous generator, rigidly coupled for frequency conversion from

50 to 60Hz.

• Qty.2 (redundant) frequency converter to start-up each set and take it to thesynchronous speed

• Qty.20 exciter controls

Rotating Converter System

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MOTOR MASS (about) 9.900 kgGENERATOR MASS (about) 11.200 kgBASEPLATE MASS (about) 12.000 kgTOTAL MASS (about) 33.100 kg

Rotating Machines Layout

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Overall Diagram

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Overall Diagram

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MOTOR MACHINE TYPE: MSN 800 Y 10 3 phsynchrounous Type

Rated power: 2520/2720 kW/kVA @ 600 r/min

Rated voltage: 8000 V

Rated frequency: 50 Hz

Poles: 10

Power factor: 0.95

Ins. / Temp. Raise: F / F

Design Temp.: 40°C (Air)

Excitation Type: Brushless

Cooling Method: IC 01 (self circulation)

Total Mass (about): 9900 kg

Enclosure: IP 23

Mounting: IM 7315

GENERATOR MACHINE TYPE: GSN 800 Y 12 3phsynchrounous Type

Rated power: 2400/3000 kW/kVA @ 600 r/min

Rated voltage: 8000 V

Rated frequency: 60 Hz

Poles: 12

Power factor : 0.8

Ins. / Temp. Raise : F / F

Design Temp.: 40°C (Air)

Excitation Type: Brushless

Cooling Method: IC 01 (self circulation)

Total Mass (about): 11200 kg

Enclosure: IP 23

Mounting: IM 7115

Rotating Machines Data

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Rotating Machines Layout

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Frequency converters:

• Based on NIDEC ASI type thyristor converter Silcovert S (LCI) with digital control

Frequency Converter

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Exciter system:

• The control of the excitation of the each motor/generator is done through an AC/DC convertertype NIDEC ASI Silcostat.

Exciter System

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The overall conversion system is managed via a control system PLC based with relevant HMI tocontrol and monitor its operation

The control system is in charge in particular of the automatic connection/disconnection of eachgroup in case of increased/decreased power needs.

Control System

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2004–“Mar Grande”Naval base - Taranto

Main MV switchboard Transformer

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