Parallel Hybrid Marine Systems

Dual Power Sources for Enhanced Performance

Parallel Propulsion

The Parallel Hybrid System

Parallel hybrid system combines traditional diesel engines with electric motors working together to drive the propeller shaft. This configuration provides both mechanical and electrical propulsion simultaneously, offering superior power output and fuel efficiency while maintaining the ability to operate in zero-emission mode when required.
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Parallel hybrid systems provide maximum power output by combining diesel engines and electric motors, ideal for vessels requiring high performance and long-range capabilities.

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Offers multiple operation modes including pure electric for zero-emission zones, diesel-only for long range, and combined mode for maximum power output.

Diesel Mode

Normal emission for long range cruising speed operation

Engines drive shaft propeller

E-Mode

Zero-emission for low speed operation

Electric motors drive the shaft propeller directly

Advantages

MAXIMUM POWER OUTPUT
EXTENDED CRUISING RANGE
REDUCING CO2 -56%
FLEXIBLE OPERATION MODES

Boost Mode

Normal emission for shore range high-speed operation

Electric motors and engines drive shaft propeller

D/E Mode

Low emission for battery charging and low-speed navigation

Engines drive shaft propeller, generators charge batteries

Performance Metrics

Compare the performance of parallel hybrid systems with traditional diesel and serial hybrid propulsion methods.

Maximum Power Output

Parallel Hybrid
Traditional
Parallel Hybrid: 130%
Traditional: 100%

Superior Power Output

Parallel hybrid systems deliver up to 130% of traditional diesel power by combining both diesel engines and electric motors on the same shaft, providing exceptional acceleration and performance.

Combined Power Better Acceleration High Performance

Fuel Efficiency

Parallel Hybrid
Traditional
Parallel Hybrid: 85%
Traditional: 65%

Enhanced Fuel Efficiency

The parallel hybrid system achieves 85% efficiency compared to 65% for traditional systems through optimized engine operation and electric motor assistance during varying load conditions.

Optimized Engine Load Electric Assistance Reduced Fuel Consumption

Operational Range

Parallel Hybrid
Full Electric
Parallel Hybrid: 110%
Full Electric: 15%

Extended Range Capability

Parallel hybrid systems provide 110% of traditional range through improved efficiency while maintaining unlimited range capability via diesel engines, unlike pure electric systems limited to 15% range.

Unlimited Range Zero-Emission Capable Flexible Operation

Emissions Reduction

Parallel Hybrid
Traditional
Parallel Hybrid: -56%
Traditional: 100%

Reduced Emissions

The parallel hybrid system achieves a 25% reduction in overall CO₂ emissions through optimized engine operation and electric motor assistance, with zero-emission capability in environmentally sensitive areas.

25% Emission Reduction Zero-Emission Zones Environmental Compliance

Single Line Diagram

Understanding the electrical distribution system of a parallel hybrid vessel

Parallel Hybrid System Single Line Diagram

Parallel Hybrid System Configuration

This Single Line Diagram illustrates the parallel hybrid marine propulsion system featuring dual 190kWh battery banks and hybrid devices rated at 200kW@2000 rpm. The system operates on a 750VDC main distribution bus with comprehensive power management through DCDC converters and protection systems. Shore charging stations provide 500kWe at 800VDC for rapid battery replenishment. The key distinguishing feature is the parallel configuration where diesel engines and electric motors work together on the same propeller shaft through hybrid transmission devices, enabling simultaneous mechanical and electrical propulsion for maximum power output and operational flexibility.