Abstract
One of the most effective methods of limiting air pollution emissions by ships at a berth in a port is the power connection of ships to the on-shore system. “Shore to Ship” (STS)—A universal system for the connection of the ship’s electrical power network with the on-shore network—ensures the adoption of the voltage and frequency of the on-shore network for the exploitation of various types of ships in the port. The realization of such a system is possible due to the use of semiconductor technologies during the construction of mechatronic systems (i.e., systems that ensure the maintenance of electricity parameters). The STS system ensures energy efficiency for high-power ship systems through the use of an active semiconductor converter. This article presents an analysis of steady state electromagnetic and energy processes, allowing the determination of the active and reactive power and losses in the STS system. The presented analytical research enables the development of a control algorithm that optimizes the system energy efficiency. In the article, the control methods allowing the optimization of the energy characteristics of the system are considered and investigated. On the basis of theoretical studies, a model was developed in the Matlab-Simulink environment, which allowed us to study steady and transient processes in the STS system in order to reduce losses in power lines and semiconductor converters.
Highlights
When mooring ships in a port, a source of electricity is required
In order minimize the calculations in the simulation model (Figure voltage source was used in the to minimize the calculations in the simulation model (Figure 12), a direct current (DC) voltage source was used in circuit, which allowed the possibility of control activeofpower in both to be checked, the DC circuit, which allowed the possibility of of control activeflow power flow directions in both directions to be checked, with a possibility to check the idea of energy optimization of the Shore to Ship” (STS) system
It should be noted that for STS systems of higher power and with a lower power factor, the value of the proposed system’s energy optimization will be more significant
Summary
When mooring ships in a port, a source of electricity is required (i.e., for the operation of all systems). For this purpose, autonomous diesel generator (D-G) sets are commonly used. The versatility of the STS system for the connection of various types of vessels to the on-shore powerThe network requires global of the system. The main problem the technical implementation of the STS system is connected with matching power network requires global standardization of the system. Inthe accordance collection of of electricity from the the on-shore network bybuilding ships moored in ports accordance with the EU recommendations, member states (during the of moored systems) technical with the (during the building of systems) should follow the EU recommendations, followrequirements—. Configuration of the “Shore (STS) system system inaccordance accordance withthe the European recommendations (EU) recommendations [10]
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