Analysis of various all-electric-ship electrical distribution system topologies

Abstract

Abstract-As advances in technology mature, the need is evident for a coherent simulation of the total electric-drive ship to model the effect of new systems on the overall performance of the vessel. Our laboratory has been developing an integrated architectural model in a physics-based environment which analyzes ship variants using a standard set of metrics, including weight, volume, fuel usage and survivability. This paper discusses advances in the model including the use of operational scenarios, incorporation of a survivability metric, and streamlining the performance of model. The model is employed herein to compare two possible distribution system topologies: a ring bus and a breaker-and-a-half. The ring bus is heavier and larger but more survivable. Fuel usage is equivalent in the two variants.

Review of Ship Microgrids: System Architectures, Storage Technologies and Power Quality Aspects

“…Recent developments in power electronics have enabled more controllability in ac propulsion systems, and thus the use of a common power system for both propulsion and service loads have become possible [1][2][3][4]. This architecture is known as integrated power system (IPS).…”

“…The zonal electrical distribution (ZED) is emerging as one of the most suitable candidate power system architecture to achieve these objectives [10,11]. Figure 3a,b show a simplified diagram of an ac ZED system proposed in [10] and a dc ZED system considered by the Electric Ship Research and Development Consortium (ESRDC) [2,12], respectively. In contrast with radial power systems, zonal power systems achieve high survivability by separating the distribution system into zones and maintaining independent power sources in each zone [10][11][12].…”

“…Therefore, technologies developed for islanded microgrids can be extended for ship microgrids as well. Nevertheless, due to the presence of large dynamic loads and various operating scenarios, power management and control of ship microgrids have become more complex compared to terrestrial microgrids [2].…”

“…However, they could also be designed to smoothen transients and thereby reduce voltage and/or frequency deviations in ship microgrids. Moreover, ESSs can be used for shaving the peak-load, energy recovery during regeneration and providing ancillary services to the main generator [1][2][3][4].…”

The Extraction of Feature Signal of All-electric Ship Electric Power System Based on Wavelet Analysis

“…AESPS (All Electric Ship Power System) uses high power propulsion system as the power device of ship motor, forming a "generator, distribution and transformation, high-power propulsion motor" ship power chain, which is the great change of ship power system [1]. Compared with traditional high-power engine propulsion system, AESPS has characteristics of flexible control, easy to realize automation, small vibration, low noise, less pollution, cabin arrangement convenience and economical efficiency, etc [2].…”