Serial Hybrid Marine Systems

Flexible Zero-Emission & Extended Range Solutions

Multi-Mode Propulsion

The Serial Hybrid System

Serial hybrid system could ensure zero-emission sailing within a certain range, while also increasing sailing range through diesel-electric propulsion mode. Additionally, when the generator set is running, the batteries can be charged or discharged according to the load requirements.
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E-Ships are suitable for full electric/battery mode navigation in zero-emission zones, diesel-electric propulsion mode in non-zero-emission zones and by hybrid mode.

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Due to no main engines installed onboard, reduce vibration and noise, providing comfort and quietness. Easier operation compare with Parallel Hybrid system.

Advantages

0% CO2 IN CERTAIN AREA
LESS CREW
QUIET
RANGE-EXTENDING CAPABILITY

Full electric mode

Both modes are zero-emission

The battery powers the propulsion motor and hotel daily loads

CO₂ emission 0%

Diesel-electric mode

Gensets generate power for propeller operate and battery recharge

Two Gensets for range-extending

CO₂ emission -27%

Hybrid mode

Gensets generate power, motors drive the vessel, battery discharge/charges

The hybrid use of two V.S. Gensets and batteries

CO₂ emission -27%

Performance Metrics

Compare the performance of serial hybrid systems with traditional and full electric propulsion methods.

Energy Efficiency

Serial Hybrid
Traditional
Serial Hybrid: 75%
Traditional: 35%

Superior Energy Efficiency

Serial hybrid systems achieve up to 75% energy efficiency by using variable speed generators and electric motors, compared to only 35% for traditional systems.

Optimized Power Reduced Waste Multiple Modes

Range Comparison

Serial Hybrid
Traditional
Serial Hybrid: 100%
Traditional: 75%

Extended Operational Range

The serial hybrid system dramatically extends operational range by using diesel generators as range extenders, while maintaining the ability to operate in zero-emission mode when required.

Long-Distance Capable Zero-Emission Zones Flexible Operation

Emissions Reduction

Serial Hybrid
Traditional
Serial Hybrid: 27%
Traditional: 0%

Reduced Emissions

The serial hybrid system offers a 27% reduction in overall CO₂ emissions compared to traditional systems, with the ability to operate with zero emissions in environmentally sensitive areas.

Zero-Emission Zones Overall Reduction Environmental Compliance

Single Line Diagram

Understanding the electrical distribution system of a serial hybrid vessel

Serial Hybrid System Single Line Diagram

System Configuration

This Single Line Diagram illustrates the serial hybrid marine propulsion system featuring dual 180kWh battery banks and twin 113kWe variable speed gensets. The system operates at 750VDC on the main distribution bus, with comprehensive power management through DCDC converters and protection systems. Twin 165kW electric motors provide propulsion power while shore charging stations (500kWe at 800VDC) enable rapid battery replenishment. The symmetrical architecture ensures operational redundancy—if one power source fails, the vessel maintains capability through the alternate system, making it ideal for both zero-emission operation in restricted zones and extended range navigation using diesel-electric mode.