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Reliability evaluation of electrochemical energy storage systems supplying the ship's main propulsion system

Szewczyk P., Łebkowski A.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2023

Vol. 17 No. 1

87--94

The paper presents the structure of hybrid and electric modern ship propulsion systems. Types and configuration of electrochemical cells for selected electric energy storage facilities on the ship were presented. The method and results of reliability analyses, such as failure mode effect analysis (FMEA), reliability block diagram (RBD) and fault tree analysis (FTA), used to estimate the probability of failure of the energy storage systems supplying the ship's main propulsion, are presented. Methods of evaluation and verification of the proposed reliability model using a laboratory model and available operational and service data are discussed. A proposal for a quantitative risk analysis of potential damage during the operation of the energy storage has been presented.

Evaluation of the Possibility of Using Hybrid Electric-Propulsion Systems for Inland Barges

Łebkowski A.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2018

Vol. 12, no. 2

261--269

The paper presents issues related to the possibility of using an electric propulsion system for inland craft, in this particular case self-propelled barges. Perspectives for development of inland water transport in Poland are presented. Historical engineering designs used in water transport at the turn of the 19th and 20th centuries are shown. The current status of stock used in inland navigation along with the condition of waterways available in Poland is presented. Energy consumption by inland craft using various configurations of propulsion systems is discussed, along with comparison of energy consumption during transport of goods using road transport, rail transport and inland waterway transport. In addition to the hybrid electric and diesel propulsion systems, the alternative is to use the electric rail mules for moving the barges.