Comparison of Diesel-Electric with Hybrid-Electric Propulsion System Safety Using System-Theoretic Process Analysis

Cruise ship industry is rapidly developing, with both the vessels size and number constantly growing up, which renders ensuring passengers, crew and ship safety a paramount necessity. Collision, grounding and fire are among the most frequent accidents on cruise ships with high consequences. In this study, a hazard analysis of diesel-electric and hybrid-electric propulsion system is undertaken using System-Theoretic Process Analysis (STPA). The results demonstrate significant increase in potential hazardous scenarios due to failures in automation and control systems, leading to fire and a higher number of scenarios leading to propulsion and power loss in hybrid-electric propulsion systems than on a conventional cruise-ship propulsion system. Results also demonstrate that STPA enhancement is required to compare the risk of two propulsion systems.

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Modelling and control of a hybrid electric propulsion system for unmanned aerial vehicles

2018 IEEE Aerospace Conference ◽

10.1109/aero.2018.8396436 ◽

2018 ◽

Cited By ~ 2

Author(s):

Ye Xie ◽

Al Savvaris ◽

Antonios Tsourdos ◽

Jason Laycock ◽

Andrew Farmer

Keyword(s):

Unmanned Aerial Vehicles ◽

Electric Propulsion ◽

Propulsion System ◽

Electric Propulsion System ◽

Aerial Vehicles ◽

Hybrid Electric ◽

And Control

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Design of Hybrid-Electric Megayachts: The Impact of Operative Profile and Smart Berthing Infrastructures

Journal of Marine Science and Engineering ◽

10.3390/jmse9020186 ◽

2021 ◽

Vol 9 (2) ◽

pp. 186

Author(s):

Francesco Mauro ◽

Elia Ghigliossi ◽

Vittorio Bucci ◽

Alberto Marinó

Keyword(s):

Electric Propulsion ◽

Propulsion System ◽

Storage Devices ◽

Electric Propulsion System ◽

Hybrid Electric ◽

The Impact

Nowadays, sustainable navigation is becoming a trending topic not only for merchant ships but also for pleasure vessels such as motoryachts. Therefore, the adoption of a hybrid-electric propulsion system and the installation of on-board storage devices could increase the greenness of a megayacht. This paper analyses the performance of three commercial propulsive solutions, using a dynamic operative profile and considering the influences of the smart berthing infrastructures. Results compare the yearly fuel consumptions of the analysed configurations for a reference megayacht.

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Fuzzy logic based equivalent consumption optimization of a hybrid electric propulsion system for unmanned aerial vehicles

Aerospace Science and Technology ◽

10.1016/j.ast.2018.12.001 ◽

2019 ◽

Vol 85 ◽

pp. 13-23 ◽

Cited By ~ 9

Author(s):

Ye Xie ◽

Al Savvaris ◽

Antonios Tsourdos

Keyword(s):

Fuzzy Logic ◽

Unmanned Aerial Vehicles ◽

Electric Propulsion ◽

Propulsion System ◽

Electric Propulsion System ◽

Aerial Vehicles ◽

Hybrid Electric

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Efficiency Analysis of Hybrid Electric Propulsion System for Commuter Airliners

2019 International Conference on Electrotechnical Complexes and Systems (ICOECS) ◽

10.1109/icoecs46375.2019.8949967 ◽

2019 ◽

Cited By ~ 2

Author(s):

Anton N. Varyukhin ◽

Pavel S. Suntsov ◽

Mikhail V. Gordin ◽

Viktor S. Zakharchenko ◽

Daniil Ya. Rakhmankulov

Keyword(s):

Electric Propulsion ◽

Efficiency Analysis ◽

Propulsion System ◽

Electric Propulsion System ◽

Hybrid Electric

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Bi-objective optimal design of plug-in hybrid electric propulsion system for ships

Energy ◽

10.1016/j.energy.2019.04.079 ◽

2019 ◽

Vol 177 ◽

pp. 247-261 ◽

Cited By ~ 3

Author(s):

Zhu Jianyun ◽

Chen Li ◽

Xia Lijuan ◽

Wang Bin

Keyword(s):

Optimal Design ◽

Electric Propulsion ◽

Propulsion System ◽

Electric Propulsion System ◽

Hybrid Electric

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Large-Scale Electric Propulsion Systems in Ships Using an Active Front-End Rectifier

Journal of Marine Science and Engineering ◽

10.3390/jmse7060168 ◽

2019 ◽

Vol 7 (6) ◽

pp. 168

Author(s):

Hyeonmin Jeon ◽

Jongsu Kim ◽

Kyoungkuk Yoon

Keyword(s):

Phase Angle ◽

Electric Propulsion ◽

Large Scale ◽

Measurement Data ◽

Propulsion System ◽

Propulsion Systems ◽

Zero Crossing ◽

Electric Propulsion System ◽

Front End ◽

Harmonic Content

In the case of the electric propulsion system on the vessel, Diode Front End (DFE) rectifiers have been applied for large-sized ships and Active Front End (AFE) rectifiers have been utilized for small and medium-sized ships as a part of the system. In this paper, we design a large electric propulsion ship system using AFE rectifier with the proposed phase angle detector and verify the feasibility of the system by simulation. The phase angle derived from the proposed phase angle detection method is applied to the control of the AFE rectifier instead of the zero-crossing method used to detect the phase angle in the control of the conventional AFE rectifier. We compare and analyze the speed control, Direct Current (DC)-link voltage, harmonic content and measurement data of heat loss by inverter switch obtained from the simulation of the electric propulsion system with the 24-pulse DFE rectifier, the conventional AFE rectifier, and the proposed AFE rectifier. As a result of the simulation, it was confirmed that the proposed AFE rectifier derives a satisfactory result similar to that of a 24-pulse DFE rectifier with a phase shifting transformer installed according to the speed load of the ship, and it can be designed and applied as a rectifier of a large-sized vessel.

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