Automatic control of ship deceleration

Abstract

Various methods have been introduced for dynamic braking of ships. Depending on the prime mover and transmission system, dynamic braking is accomplished by electric power dissipation (in electric driven ships) or clutches and braked, or air compression (in diesel engine propulsion systems). In this study a gas turbine - electric drive combination is used as the means of propulsion; the usual method for dynamic braking is the electric power dissipation method using resistors. This thesis is concerned with an investigation of different methods for dynamic braking in an attempt to find a way to decrease the size of the braking resistors needed and their associated equipment, or to eliminate the need for these by using another type of dynamic braking.