Method for calculating maneuvering characteristics of electric ships’ propulsion complexes

Abstract

The aim of the study is to develop an analytical method for calculating the maneuvering quality indicators of electric ships’bbbhd propulsion systems. The method is based on the concept of representing quality indicators by their analytical models. The analytical models were constructed using the active planning method, according to specially constructed experiment planning matrices. An algorithm for constructing analytical models was developed. Based on the results of screening experiments conducted according to specially constructed plans, the parameters of the systems that significantly affect the maneuvering quality indicators were identified. The form of representing the quality indicators was substantiated. A series of calculations were performed using the full factorial experiment method, and analytical models of the performance quality indicators for the main maneuvers –acceleration, braking, reversal, and entering circulation – were obtained. The efficiency of the models was demonstrated using a specific vessel as an example. The capabilities of the models for predicting the maneuvering properties of a vessel are illustrated. It is advisable to use this method at the initial stages of design with a limited amount of technical information. The analytical models cover electric ships with a classic version of the electric power plant layout with any propulsion electric motors. They allow to quickly and accurately evaluate vessels’ maneuverability.