⚡ generator control systems (gcs)

Generator Control
Systems (GCS)

Complete Generator Control Systems – Generator Control Units, Paralleling, Load Sharing, Protection Relays, AVR, Synchronization & PMS Integration. Our experienced team (OEM-trained, 15+ years) supports MAN B&W, Wärtsilä, Caterpillar, MAK, Rolls-Royce, Bergen, Niigata, Yanmar, ABC, Daihatsu, SEMT Pielstick and more.

Request service Contact engineers

400+
Generator control retrofits

MAN, Wärtsilä
OEM trained on major makes

24/7
GCS support

Experienced
team – 15+ years

🔧 real vessel experience

Our engineers have worked on Generator Control Systems for auxiliary and shaft generators driven by MAN B&W 23/30, 28/32, 32/40; Wärtsilä 20, 26, 32; Caterpillar 3500/3600; MAK M20/M32; Rolls-Royce Bergen; Niigata; Yanmar; ABC; Daihatsu; SEMT Pielstick and more.

From GCU to circuit breaker – we cover all generator control aspects.

⚡ generator control systems (gcs)

GCU · Paralleling · Load Sharing · AVR · Protection

✓ Generator Control Units (GCU) – Woodward, DEIF, ComAp, Deep Sea
✓ Automatic Generator Paralleling – sync, load sharing, import/export
✓ Load Sharing (kW & kVAR) – digital load sharing modules
✓ Automatic Voltage Regulators (AVR) – Basler, Stamford, Leroy Somer
✓ Generator Protection Relays – Siemens, ABB, SEL, GE
✓ Power Management System (PMS) Integration
✓ Shaft Generator Control – PTO/PTI, frequency converters
✓ Emergency Generator Control – auto start, blackout recovery
✓ Synchronizing (auto/manual) – check sync, dead bus
✓ Generator Circuit Breaker Control – ACB, MCCB
✓ Reverse Power / Minimum Power Protection
✓ Integration with IAS/AMS/PMS/SCADA

Experienced with MAN, Wärtsilä, Caterpillar, MAK, Bergen, Niigata, Yanmar, ABC, Daihatsu, SEMT – our team delivers.

🎛️ generator control units

Woodward · DEIF · ComAp · Deep Sea · GAC · Basler

GCU / Controller makes & models

✓ Woodward – easYgen-1000/1500/2000/3000, LSSC, GCP-30/31/32
✓ DEIF – AGC 100/150/200/400, PPU 300, Multi-line 2
✓ ComAp – InteliGen NTC, InteliGen 1000, InteliMains, InteliSys
✓ Deep Sea Electronics – DSE8610, DSE8660, DSE8xxx marine, DSE7310
✓ GAC (Governor America Corp) – ESG, ESD, LSM, LSC
✓ Basler – DGC-2020, DGC-500, DGC-2020ES
✓ Siemens – Siprotec, S7-1200/1500 based generator control
✓ ABB – PGC, Unitrol, Symphony Plus

Key GCU functions

✓ Auto start/stop – load dependent
✓ Synchronizing – auto/manual, check sync
✓ Load sharing – kW/kVAR, isochronous/droop
✓ Generator protection – integrated ANSI codes
✓ Power management – import/export, peak shaving
✓ Remote monitoring – Modbus, Profibus, Ethernet
✓ Blackout recovery – dead bus closure
✓ Engine & generator data logging

🔧 generator prime movers

Diesel / Gas / Shaft Generators

✓ MAN B&W – 23/30, 28/32, 32/40, 48/60 (aux genset control, load sharing)
✓ Wärtsilä – 20, 26, 32, 46F (generator control integration)
✓ Caterpillar – 3500, 3600 series, C32, C280 (ADEM, electronic controls, GCU interface)
✓ MAK – M20, M25, M32, M43 (generator control retrofits)
✓ Rolls-Royce Bergen – B32:40, C26:33 (genset control & protection)
✓ Niigata – 6L, 8L, 12L series gensets
✓ Yanmar – 6EY, 8EY, 12EY (aux & emergency genset control)
✓ ABC – DZ, VDZ genset engines (GCU upgrades)
✓ Daihatsu – DK, DC series (generator control modules)
✓ SEMT Pielstick – PA, PC series gensets
✓ Shaft generators – PTO/PTI, frequency converters (VACON, ABB, Siemens, Danfoss)
✓ Emergency generators – MTU, Scania, Volvo Penta, Cummins (auto start, blackout)

⚡ avr & excitation

Automatic Voltage Regulators · Excitation Control

AVR makes & models

✓ Basler – AVC63, AVC125, DECS-100/150/250, DECS-400
✓ Stamford – SX, MX, AS series AVRs (SX440, MX341, AS480)
✓ Leroy Somer – R450, R610, D510, D550
✓ ABB – Unitrol 1000, Unitrol 6000, excitation systems
✓ Siemens – Sipart, Thyripol
✓ Mitsubishi – AVR for marine gensets
✓ Newage – various AVRs
✓ Mecc Alte – DSR, DTR series

Excitation / AVR services

✓ Calibration & tuning – voltage setpoint, stability, droop
✓ Reactive load sharing (cross-current) integration
✓ Digital excitation retrofits – Basler DECS, ABB Unitrol
✓ AVR replacement / upgrade
✓ PMG (permanent magnet generator) excitation support
✓ Paralleling with AVR droop / isochronous modes
✓ Under-frequency roll-off (UFR) adjustment

🛡️ generator protection relays

Siemens · ABB · SEL · Basler · GE

Protection relay makes

✓ Siemens – Siprotec 5 (7UM, 7SR), 7UM62, 7UM85
✓ ABB – REF 601, REM 610, REG 670 series
✓ Schweitzer (SEL) – SEL-700G, SEL-710, SEL-751, SEL-300G
✓ GE Multilin – G60, 750/760, 850, SR series
✓ Basler – BE1-11g, BE1-25, DGC-2020 integrated protection
✓ DEIF – PPM 300, integrated protection in GCU
✓ Woodward – easYgen protection functions

Protection functions (ANSI)

✓ Reverse power (32) – motoring protection
✓ Overcurrent (50/51) – instantaneous / time-delayed
✓ Under/over voltage (27/59)
✓ Under/over frequency (81U/81O)
✓ Loss of excitation (40)
✓ Negative phase sequence (46)
✓ Stator earth fault (64G) / rotor earth fault (64R)
✓ Differential protection (87G)
✓ Overfluxing (24)

🔄 synchronizing & paralleling

Auto Sync · Check Sync · Dead Bus · Load Sharing

✓ Auto synchronizers – Woodward (SPM, easYgen), DEIF (AGC), ComAp (InteliSync), Basler (Syncrocloser)
✓ Check sync relays – Basler BE1-25, SEL-25, Siemens 7UM, ABB SPAU
✓ Manual synchronizing – lamps, scope, digital indication
✓ Dead bus closing – first on, fast transfer
✓ Closed bus transfer – make before break
✓ Open bus transfer – break before make with fast sync
✓ Paralleling switchgear control – ACB, MCCB
✓ Load sharing during parallel operation – kW/kVAR
✓ Island / infinite bus operation

🔧 gcs retrofit & troubleshooting

Modernization · Legacy GCU · Diagnostics

✓ Legacy GCU replacement – Woodward, GAC, Basler, DEIF, ComAp
✓ PLC-based generator control – Siemens, Rockwell, Mitsubishi, B&R
✓ HMI upgrade for generator control – touchscreen, data logging, remote monitoring
✓ AVR retrofits – analog to digital (Basler DECS, ABB Unitrol)
✓ Synchronizer upgrade – analog to digital
✓ Generator protection upgrade – electromechanical to numerical relays
✓ Load sharing card replacement – Woodward LSSC, LSM, GAC LSM
✓ Generator control troubleshooting – on-site diagnostics, software validation
✓ Network integration – Modbus, Profibus, CANopen, Ethernet/IP for generator data
✓ Spare parts supply – for all major GCU, AVR, protection relay makes

🌍 gcs service coverage

Vessels We Serve with Generator Control Expertise

Vessel Types

✓ Tankers (VLCC, Aframax, Product)
✓ Bulk Carriers (Capesize, Panamax)
✓ Container Vessels (Post-Panamax)
✓ LNG / LPG Carriers
✓ Offshore Vessels (PSV, AHTS, OSCV)
✓ Drilling Rigs (Jack-up, Semi-sub)
✓ FPSO / FLNG / FSRU
✓ Ro-Ro / PCTC / Car Carriers
✓ Cruise Ships / Ferries
✓ Naval Vessels

Global Service Locations

✓ UAE – Dubai, Abu Dhabi, Fujairah
✓ India – Mumbai, Kochi, Chennai, Kandla
✓ Singapore – Jurong, Tuas
✓ Middle East – Qatar, Saudi, Kuwait
✓ Europe – Rotterdam, Hamburg, Piraeus
✓ Asia – South Korea, China, Japan
✓ Worldwide – all major ports and shipyards

⚡ 24/7 generator control support

Need Generator Control System
service or retrofit?

Our GCS engineers provide complete installation, troubleshooting, retrofit, and repair services for all generator control systems – GCU, paralleling, load sharing, AVR, protection relays, shaft generators. Available 24/7 worldwide.

Request GCS service Email GCS engineers

Email: service@seanav.org | Website: www.seanav.org

Generator Control
Systems (GCS)