Abstract
In the context of harsh emission control and ecological environment protection, the shipping industry is transforming and upgrading towards greening, decarburization, and electrification. Battery-powered all-electric inland ships have been attracting increasingly attention. However, its initial investment cost is much more expensive than a traditional diesel-driven mechanical ship because lithium-ion batteries are currently expensive. Hence, a suitable battery size and efficient energy management strategy for ship sailing are very important for a battery-powered ship. In this paper, a novel joint optimization method of the sailing speed and battery capacity, which considers the interaction between battery size and sailing speed as well as multiple operation factors, such as freight demand and battery life, and port electricity price, is proposed to fully exploit the battery-powered ships’ application potential. Moreover, a joint optimization model of the sailing speed and battery energy consumption model considers the battery-powered ship’s characteristics and waterway characteristics. Next, a solution algorithm for the proposed joint optimization model is established to achieve joint decision-making regarding the sailing speed and battery size. Finally, case studies are conducted to demonstrate the flexibility and effectiveness of the proposed method. The results show that the proposed method can obtain the optimal sailing speed and the corresponding battery capacity synchronously when the actual transportation scenario is fixed. Moreover, the battery initial investment cost can be effectively reduced with the prosed method.
Highlights
As the amount of greenhouse gas that is generated by ships increases, the international maritime organization (IMO) has launched an ambitious target whereby all the ships built after 2025 should achieve 30% greenhouse gases (GHGs) emission reductions compared with 2005 [1,2]
The battery-powered ship completely satisfies the above two requirements as the charged power can be generated from renewable energy resources (RESs), such as wind and solar radiation, and the ship power system is constructed by integrated power system (IPS) technology
2, it can found duespeed for a paper proposes joint optimization of battery sizebe and ship that sailing to the voyage distance not being very long, the cycling using times becomes the restricted battery-powered all-electric inland dry bulk ship to maximize the ship’s life revenue
Summary
As the amount of greenhouse gas that is generated by ships increases, the international maritime organization (IMO) has launched an ambitious target whereby all the ships built after 2025 should achieve 30% greenhouse gases (GHGs) emission reductions compared with 2005 [1,2]. IPS can integrate optimal power management technology, energy storage systems (ESS), and different kinds of renewable energy resources It can reduce the redundancy of the onboard components of main engines in most cases and increase the system energy efficiency [9]. To reduce the ship’s pollution and energy consumption effectively, Zheming Jin et al proposed a hierarchical control method for a DC distribution-based AES to solve the power management and power quality issues. Xianqiang Bao et al proposed a joint optimization method of ESSs size and power energy management storage to minimize the ship operation cost over its life. The equivalent battery-powered version is analyzed to determine the battery size, capacity, and electric power demand
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