With the growing need for alternative marine propulsion systems that improve overall ship efficiency and minimize ecological footprint, transportation industry inventors are leaving no question unanswered in their quest to find a solution to this significant challenge. With all of the current alternatives, the electric marine propulsion system appears to have a bright future.
The electric hybrid marine propulsion system in commercial ships is relatively simple. It is usually classified by the type of prime mover linked to it. The following are the most common types:
#1. Shaftline Propulsion
As the name implies, the propeller is rotated by a shaft from a guiding force, linked to reduction gear and high-speed motors or powered directly by a reduced speed motor.
#2. Pod Propulsion:
The pod propulsion unit replaces the traditional propeller. It consists of a diesel electric drive placed inside the pod with the propeller attached directly to the drive shaft.
Electric boat propulsion systems have several advantages over traditional engine-driven propulsion systems, driving up demand for electrical propulsion in merchant's vessels.
- The system creates a substantial amount of electricity, which is then used to provide cargo pumps, fire pumps, and other vital auxiliary machinery with the excess power.
- Compared to a conventional system, the area required for installing electrical marine propulsion machinery is relatively small and compact.
- The placement of machinery is more customizable.
- Increased payload due to the ability to move equipment components around.
- Lowering fuel use and emissions has environmental benefits.
- Due to the maximum torque at zero speed, the vehicle performs well in difficult ice conditions.
- Reduces life cycle costs by consuming less fuel and requiring less maintenance.
- Maintenance and service time is kept to a minimum.
- Vessels may experience trim issues, such as sternwheelers, where machinery must be located forward to avoid the trim problems.
- Reduced vibration and noise provide more comfort.
Electrical propulsion systems are already well-established in the maritime industry for some ship types. With various severe environmental rules and regulations in place, it has a bright future for marine electrification.
