Shore-to-Ship Power

Abstract

This contribution starts with a review of the state of the art of existing high-voltage shore connection (HVSC) systems in terms of principles, rules, publications, technologies, and relevant installations. Then, tutorial sections present the main technical aspects of HVSC systems as ship-to-shore interface, shore equipment (transformers, converters, etc.), onboard devices (cubicles, shore switchboard, etc.), operating sequences, and feasibility aspects, for both commercial and military applications. Finally, some technical challenges are presented, concerning intentional/unintentional bonding, interactions between HVSC bonding and cathodic protection systems, bonding opportunity, and electrical safety aspects related to bonding issues in case of large earth fault currents in port facilities

Modeling and Simulation Analysis of Shore-to-ship Power System

“…At the same time, because of its great output waveform, there is no harmonic problem. So it is very suitable for ports and other shipbuilding industry [7]. In this paper, the high-voltage multilevel PWM voltage source converter is selected, and its schematic diagram is shown in figure 4.…”

A comparison between synergetic control and feedback linearization for stabilizing MVDC microgrids with constant power load

“…The circuit model of the multi machine MVDC system and its state space average model can be derived according to [17]. The mathematical model is expressed by n+2m+1 nonlinear differential equations with the following state variables [17]: By neglecting the buck filter resistances R fk , the system of [17] can be simplified, as all capacitors are in parallel thus can be lumped in the equivalent capacitor (C eq ), as well as the linear load resistances (R eq ) and the nonlinear loads, which results in an equivalent load current (I L ) as depicted in Fig.…”

“…The problem with passive techniques is their effect on systems size, weight, cost and efficiency [10]. The other methods are active techniques, which can be applied on the load side [16] and on the generation side [17]. In this paper, the active technique is applied on the generation side converters.…”

“…In the field of nonlinear control, there are different methods in the literature able to improve DC bus stability. Sliding mode control [13], boundary control [8], [14] feedback linearization control [10], [15], [16], [17] passivity-based control [18] and synergetic control [6] are some of these approaches. In this paper, the synergetic control method is applied to a Medium Voltage DC (MVDC) microgrid.…”

“…In this paper, the synergetic control method is applied to a Medium Voltage DC (MVDC) microgrid. The performance of the synergetic control method is compared with feedback linearization control method which was applied to MVDC microgrid in [9] and [17]. The MVDC system and the controllers are implemented in Opal-RT [19], a real time simulator, and their dynamic performance is analyzed.…”