Marine MVDC multi-phase multi-pulse supply

Abstract

Abstract-This paper presents comparative evaluation and explores the different technologies suitable for the implementation of the Medium Voltage Direct Current (MVDC) electrical supplies for the marine on-board electrical distribution network. To realize the MVDC supply in the range from 5 kV to 25 kV, various technological choices are available during the design process and have a direct influence on the overall system performances. In this work we discuss different prime movers, choice of electrical generators and type of rectifiers. Different configurations are characterized with different metrics, in terms of commercial availability, quality of supply, efficiency, dynamic performance and volume. Multi-phase multi-pulse supply configurations are identified to provide high quality dc supply and recommended for marine MVDC distribution.

Concept and Preliminary Sizing of a Dual DC-Bus Homopolar Generator Using Diode Rectifiers

“…Within this context, there is a critical need for reliable electric drive architectures with reduced mass and volume [10]. In fact, a typical concept of architecture is the hybrid turbo-electric layout [21], [22], whereas multiple prime movers drive electrical generators which feed independent DC power buses, thus offering several possibilities to effectively implement fault management strategies [2]. A typical layout is depicted in Fig.…”

MVDC Supply Technologies for Marine Electrical Distribution Systems

“…Moreover, certain equipment, e.g., gearboxes and bulky transformers for voltage coordination are expected to be removed in the MVDC electrical distribution systems to provide flexibility and footprint reduction in the overall ship design [18]. This evolution of the on-board electrical distribution system, from the state-of-the-art MVAC to prospective MVDC system, is illustrated in Fig.…”