Real-time simulation of a COGAG naval ship propulsion system

Abstract

Design and optimization of the propulsion system is a crucial task of the ship design\ud process. The behaviour of the propulsion system, in transient conditions as well as in steady\ud state, is greatly affected by the capability of the control system to manage the available power\ud and to achieve the desired performance in the shortest time.\ud The selection of a proper control scheme is a trade-off between different and conflicting\ud needs. Two of the opposites are: increasing the ship operability by adding more functions and\ud more controls; and reducing the control system development and installation time and cost.\ud In this paper, the rapid prototyping and testing procedure for the development of the\ud propulsion controller of the new Italian aircraft carrier Cavour is presented, using real-time\ud hardware-in-the-loop (RT-HIL) simulation. The procedure is based on a wide use of simulation\ud technology. First, a complete dynamical model of the ship propulsion plant was developed.\ud Then, batch simulation was used to develop the best possible control scheme. Finally, RT-HIL\ud simulation was used to debug the real controller software and to tune the controller parameters\ud before sea trials.\ud The application of the procedure led to a significant reduction in the development phase of\ud the controller design. Furthermore, the adoption of the RT-HIL technology greatly reduced the\ud time spent to tune the control system during the ship delivery phase

Dynamic consequence analysis of marine electric power plant in dynamic positioning

“…The simulated cases should include all potential worst-case scenarios based on faults in the power plant and thruster system, and may be identified by a report of the DP system's failure mode and effects analysis (FMEA) [20] or hardware-in-the-loop testing [21,22]. This could, for example, be faults such as loss of switchboard, loss of bus segment, loss of thruster, loss of generator set, fault in governor, frozen command signal, or equipment delivering maximum capacity when this is not desired (e.g., full thrust in drive-off).…”

“…Therefore, common mode and software faults are ignored in this study, as common mode faults should be detected by FMEA during the design of the system. HIL-testing can also be used to detect common mode and software faults [21,22].…”

Concept of an advanced simulation-based design for engineering support of offshore plant equipment industries and its realization method

“…(Sohn and Shin, 1999;Lee and Kim, 2001;Altosole et al, 2009;Lee et al, 2010;Oh et al, 2014;Alessandri et al, 2015). In offshore plant industry, many advanced researchers are studying application methods of the simulation-based design, because simulation-based design has emerged as a key technology to reduce large budget, manpower and development period needing to develop huge offshore structures.…”

Potential of Hardware-in-the-Loop simulation in the Towing Tank

“…In shipbuilding industry the HIL technique has mostly been used in naval projects of which the development and testing of the propulsion control system of the Dutch M-class frigates is an early example. Other examples include the development and testing of propulsion control systems for the Italian Navy [3], [4]. The offshore industry has embraced HIL techniques to verify and fine tune system control in order to reduce risk at late project stages [5].…”