Main and Side Thruster Drive and Remote Control System
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Product Introduction:
The main and side thruster variable-frequency control system is the “soul” of modern, intelligent ships. It converts the powerful output of electric motors into precise, smooth, efficient, and reliable ship maneuverability, delivering a revolutionary improvement whether for the long-distance voyages of giant vessels or for the delicate “needle-in-a-haystack” operations within ports.
Model: RE-PT-CS/RE-BT-CS
Electrical Specifications:
Input voltage: AC 380 V to 690 V, 3-phase, +6% to -10%, 50–60 Hz, ±5%
Compatible motor power: 50–4,000 kW
Output voltage: 0~AC 380V–690V, 3P
Output frequency: 0–300 Hz
Control method: main propulsion uses vector control (SVC), while auxiliary propulsion uses V/F control.
Working Conditions and Protection:
Ambient temperature: 0~45°C
Relative humidity: ≤90%
Pitch and Roll: 15° of transverse inclination, 22.5° of transverse roll, 5° of longitudinal inclination, and 7.5° of longitudinal roll.
Protection ratings: Cabin IP44, Bridge IP23, Both Sides IP56
Certification and Standards:
Design and manufacturing standards: Comply with the IEC 60092 series of standards.
Class Society Certification: The product design complies with the standards of leading class societies, including CCS, ABS, DNV, LR, BV, RINA, NK, and KR. Product certificates from the relevant class societies can be applied for based on customer requirements.
Product Features:
1. Stepless, smooth speed regulation and precise control:
2. Prominent soft-start/soft-stop function:
3. Extremely high operational efficiency and energy-saving performance:
4. Robust intelligent protection and diagnostic functions:
5. Flexible Communication and System Integration:
6. High-Power Output and High-Torque Control:
7. Redundant Design and High Reliability:
8. “Zero Thrust” Position and “Creep” Mode:
Scope of application: Offshore support vessels, oil and chemical tankers, container ships, bulk carriers, car carrier roll-on/roll-off vessels, cruise ships, and others.
Case:
BYD 9,200-vehicle dual-fuel PCTC vessel side-thruster variable-frequency control system
Main parameters:
Input voltage: AC 440 V, 3-phase, 60 Hz
Transformer: AC 440 V / 690 V, 3-phase, 60 Hz, 2250 kVA
Motor voltage: AC 690 V, 3-phase, 60 Hz
Motor power: 1800 kW
Motor speed: 1180 rpm
Ambient temperature: -10~45℃
Relative humidity: ≤90%
Pitch and Roll: 15° of transverse inclination, 22.5° of transverse roll, 5° of longitudinal inclination, and 7.5° of longitudinal roll.
Protection rating: IP44
Classification Society: DNV
A 12-pulse phase-shifting step-up transformer combined with a 12-pulse variable-frequency drive is used to control the 1,800 kW fixed-spacing slurry-side pusher, effectively reducing harmonic distortion in the power grid, enhancing the precision of pusher control, and improving energy efficiency.
Main Propulsion Variable-Frequency Control System for the Shunyang 7,200 kW Multi-Purpose Work Vessel
Main parameters:
Input voltage: AC 690 V, 3P, 60 Hz
Motor voltage: AC 690 V, 3-phase, 60 Hz
Motor power: 2600 kW
Motor speed: 1788 rpm
Ambient temperature: -10~45℃
Relative humidity: ≤90%
Pitch and Roll: 15° of transverse inclination, 22.5° of transverse roll, 5° of longitudinal inclination, and 7.5° of longitudinal roll.
Protection rating: IP44
Classification Society: ABS
Two AFE variable-frequency drives are employed to independently control two 2,600-kW propulsion motors, effectively reducing harmonic distortion on the power grid and enhancing the precision of side-thruster control. The main propulsion system can be stopped when operating at idle with zero thrust, resulting in approximately 20% energy savings compared with conventional main propulsion.
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