scholarly journals High-Speed Real-Time Simulators for Engineering Design

10.14311/738 ◽  
2005 ◽  
Vol 45 (4) ◽  
Author(s):  
R. E. Crosbie ◽  
N. G. Hingorani
Keyword(s):  
Engineering Design ◽  
Real Time ◽  
Computer Simulations ◽  
High Speed ◽  
Operator Training ◽  
Real Time Simulation ◽  
Automotive Systems ◽  
Simulated Environments ◽  
Time Simulation ◽  
Real Time Simulations

The use of computer simulations is now an established technique in engineering design. Many of these simulations are used to predict the expected behavior of systems that are not yet built, or of existing systems in modes of operation, such as catastrophic failure, in which it is not feasible to test the real system. Another use of computer simulations is for training and testing purposes in which the simulation is interfaced to real hardware, software and/or a human operator and is required to operate in real-time. Examples are plant simulators for operator training or simulated environments for testing hardware or software components. The primary requirement of a real-time simulation is that it must complete all the calculations necessary to update the simulator outputs as well as all the necessary data I/O within the allotted frame time. Many real-time simulations use frame times in the range of a few milliseconds and greater.There is an increasing number of applications, for example in power electronics and automotive systems, in which much shorter frame rates are required. This paper reviews some of these applications and the approaches to real-time simulation that can achieve frame times in the range 5 to 100 microseconds. 

Low-Cost High-Speed Techniques for Real-Time Simulation of Power Electronic Systems

2007 ◽  
Author(s):  
R. E. Crosbie ◽  
J. J. Zenor ◽  
R. Bednar ◽  
D. Word ◽  
N. G. Hingorani
Keyword(s):  
Real Time ◽  
High Speed ◽  
Low Cost ◽  
Electronic Systems ◽  
Power Electronic ◽  
Real Time Simulation ◽  
Time Simulation

scholarly journals Real-Time Simulation and Research on Photovoltaic Power System based on RT-LAB

2015 ◽  
Vol 8 (1) ◽  
pp. 183-188 ◽  
Author(s):  
Yuan Xiaodong ◽  
Zhao Yan ◽  
Zhu Weiping
Keyword(s):  
Engineering Design ◽  
Real Time ◽  
Physical Simulation ◽  
Photovoltaic System ◽  
Software Modeling ◽  
Real Time Simulation ◽  
Point Tracking ◽  
Current Controller ◽  
Time Simulation ◽  
Power Point

The maximum power point tracking (MPPT) controller in the Photovoltaic system is the key to verify all kinds of MPPT control algorithms. But the development of actual controller has the defects of needing long periods, artificial code writing and so on. RT-LAB real-time simulation platform is an advanced model-based engineering design and test application platform. The outstanding real-time performance in the current experimental study and engineering design made it used more and more widely. Therefore, it is necessary to introduce its hardware and software structure and realtime performance in detail. This paper gave a comprehensive and systematic introduction to hardware architecture, software architecture and simulation process of RT-LAB. It also presented a semi-physical simulation experiment of photovoltaic system MPPT using the features of Photovoltaic MPPT and semi-physical Real-Time simulation technology. The MPPT control strategy is achieved by establishing model using Simulink package. Other parts of the main circuit were physical circuit except controller. The parameter adjustment functions of online RT-LAB can easily optimize controller parameters. Two special tools, ARTEMIS and RT-Events used in power electronics were described in detail. The RT-LAB software modeling standard was also illustrated. The testing results showed that the usage of RT-LAB for the development of photovoltaic controller can resolve many problems in the current controller development. The application of RT-LAB in photovoltaic systems provides a reference for the micro grid, smart grid and other real-time systems.

The Rate of Turn Required for Geographically Fixed Turns: A Formula and Fast-Time Simulations

2000 ◽  
Vol 53 (1) ◽  
pp. 146-155 ◽  
Author(s):  
Max J. van Hilten ◽  
Paul H. M. Wolkenfelt
Keyword(s):  
Real Time ◽  
Simulation Program ◽  
Fast Time ◽  
Real Time Simulation ◽  
Time Simulation ◽  
Tidal Stream ◽  
Path Prediction ◽  
Real Time Simulations ◽  
Hydrodynamic Effects ◽  
The Relationship

This paper concerns the derivation of a formula to follow geographically fixed turns in a homogeneous current or tidal stream. Until now, various well-founded but limited approximations have been used. In principle, all these approximations are based on the formula v = ω × R. One result of this research is the development and use of a fast-time simulation program. The initial aim was to illustrate to trainees the consequences and, in particular, the possible dangers of these approximations. The fast-time simulation program can be used in support of real-time simulation. Comparisons with real-time simulations carried out by the Dutch Pilots' Corporation (STODEL) indicate that the fast-time simulations generate turning-circle diameters that differ by a maximum 4 percent. The relationship with path-prediction is also dealt with. The possibility of applying the developed formulae in practice and for passage planning is currently under investigation. The fast-time simulation program has not been developed for one specific ship: apart from the use of an assumed position of the pivoting point at 1/3 of the ship's length from the bow, it does not take hydrodynamic effects into account.

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