Ship Electric Propulsion Simulation System Based on MATLAB

2013 ◽  
Vol 779-780 ◽  
pp. 502-505
Author(s):  
Xiao Qu ◽  
Wei Gang Zheng
Keyword(s):  
Differential Equation ◽  
Transfer Function ◽  
Electric Propulsion ◽  
Simulation System ◽  
Propulsion System ◽  
Mathematics Model ◽  
Motor Timing ◽  
System A ◽  
Electrical Propulsion

The paper has an analysis of ship electrical propulsion technology. The Paper have a detail research of IPS (Integrate Propulsion System) . A mathematics model in the form of differential equation was constructed base on the theory of motor timing. Then the model was changed into the form of transfer function. With the help of MATLAB, the model in the form of transfer function can be easily solved.

Operating Characteristics of an Electrically Assisted Turbofan Engine

2020 ◽  
Author(s):  
Merijn Rembrandt van Holsteijn ◽  
Arvind Gangoli Rao ◽  
Feijia Yin
Keyword(s):  
Electric Propulsion ◽  
Propulsion System ◽  
Operating Characteristics ◽  
Turbofan Engine ◽  
Electric Propulsion System ◽  
Fuel Burn ◽  
Parallel Hybrid ◽  
Electrical Propulsion ◽  
Hybrid Electric ◽  
Cruise Flight

Abstract With the growing pressure to reduce the environmental footprint of aviation, new and efficient propulsion systems must be investigated. The current research looks at the operating characteristics of a turbofan engine in a parallel hybrid-electric propulsion system. Electric motors are used to supply power in the most demanding take-off and climb phases to achieve the required thrust, which allows the turbofan to be redesigned to maximize the cruise performance (to some extent). It was found that the turbofan’s cruise efficiency can be improved by 1.0% by relaxing the constraints of take-off and climb. It was found that the surge margins of compressors limit the amount of power that could be electrically supplied. On a short-range mission, the hybrid-electric propulsion system showed a potential to reduce around 7% of fuel burn on an A320 class aircraft. Most of these savings are however achieved due to fully electric taxiing. The weight of the electrical propulsion system largely offsets the efficiency improvements of the gas turbine during cruise flight. A system dedicated for fully electric taxiing system could provide similar savings, at less effort and costs. Given the optimistic technology levels used in the current analysis, parallel hybrid-electric propulsion is not likely to be used in the next-generation short to medium range aircraft.

Research and Simulation Analysis on Fault of Marine Integrated Electric Propulsion System

2013 ◽  
Vol 722 ◽  
pp. 116-120 ◽  
Author(s):  
Peng Cheng ◽  
Peng Qin ◽  
Ji Hui Li
Keyword(s):  
Permanent Magnet ◽  
Electric Propulsion ◽  
Simulation Analysis ◽  
Short Circuit ◽  
Simulation System ◽  
Propulsion System ◽  
System Failure ◽  
Diesel Generator ◽  
Electric Propulsion System ◽  
System Module

In this paper, neutral grounding mode, short-circuit failure and loss of excitation of marine integrated electric propulsion system are analyzed and summarized. Marine integrated electric propulsion system module is built in PSCAD/EMTDC. Diesel generator and its excitation module, permanent magnet synchronous propulsion motor and load module,inverter module is included in the system, Short-circuit failure and loss of excitation was added to the simulation system. The changing process of ship electric propulsion system failure is obtained.

scholarly journals Installation of a Gas-Turbine/Electric Propulsion System in a 65 Foot Patrol Boat

1995 ◽  
Author(s):  
J. B. Brown ◽  
Nicholas F. Martino ◽  
William S. Stavenger ◽  
C. M. Lee
Keyword(s):  
Gas Turbine ◽  
Electric Propulsion ◽  
Propulsion System ◽  
Foot Patrol ◽  
Electric Propulsion System ◽  
Electrical Propulsion

This paper presents a descriptive summary of the significant features of a gas-turbine/electrical propulsion system as installed in a 65 foot patrol boat for test purposes.

Verification, Validation and Accreditation of Ship Electric Propulsion Simulation System

2013 ◽  
Vol 433-435 ◽  
pp. 1915-1920
Author(s):  
Bing Li ◽  
Li Hong Li ◽  
Fan Ming Liu
Keyword(s):  
Electric Propulsion ◽  
System Simulation ◽  
Simulation System ◽  
Propulsion System ◽  
Verification And Validation ◽  
Ship Propulsion ◽  
Validation Methods ◽  
Electric Ship ◽  
Expert Theory ◽  
Modelling Simulation

in this paper, the concepts of modelling, simulation, verification and validation are described in order to analyse their necessities in electric ship propulsion system simulation. Traditional verification and validation methods are outlined before a new method based on expert theory and verification and validation methods of software testing is proposed to verify if the simulation program meets customers needs and respective software protocols, according to the characteristics of electric ship propulsion system.

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

OUTDOOR TESTS OF A TOWED BOAT MODEL WITH FUEL COMBUSTION IN A BOTTOM CAVITY

2020 ◽  
Author(s):  
S. M. FROLOV ◽  
◽  
S. V. Platonov ◽  
K. A. AVDEEV ◽  
V. S. AKSENOV ◽  
...  
Keyword(s):  
Drag Force ◽  
Direct Contact ◽  
Propulsion System ◽  
Hydrodynamic Drag ◽  
Atmospheric Air ◽  
System A ◽  
Bottom Cavity ◽  
Gas Cavity ◽  
System Power ◽  
Gas Supply

To reduce the hydrodynamic drag force to the movement of the boat, an artificial gas cavity is organized under its bottom. Such a cavity partially insulates the bottom from direct contact with water and provides “gas lubrication” by means of forced supply of atmospheric air or exhaust gases from the main propulsion system. A proper longitudinal and transverse shaping of the gas cavity can significantly (by 20%-30%) reduce the hydrodynamic drag of the boat at low (less than 3%) consumption of the propulsion system power for gas supply.

Sign in / Sign up

Export Citation Format

Share Document