Hybrid Technique for Real-Time Simulation of High-Frequency-Switched Electrical Systems

2016 ◽  
Vol 9 (1) ◽  
pp. 103-111
Author(s):  
Maher A. Hasan ◽  
Eric Walters ◽  
Michael Boyd ◽  
Jason Wells ◽  
Jon Zumberge ◽  
...  
Keyword(s):  
Real Time ◽  
High Frequency ◽  
Hybrid Technique ◽  
Real Time Simulation ◽  
Electrical Systems ◽  
Time Simulation

scholarly journals Modeling and Real-Time Simulation of Induction Motor Using RT-LAB

2018 ◽  
Vol 9 (4) ◽  
pp. 1476
Author(s):  
A. Hamed ◽  
A. Hazzab
Keyword(s):  
Real Time ◽  
Induction Motor ◽  
Motor System ◽  
Parallel Simulation ◽  
Simulation Software ◽  
Electric Circuits ◽  
Real Time Simulation ◽  
Electrical Systems ◽  
Time Simulation

<span lang="EN-US">This paper presents the modeling and real-time simulation of an induction motor. The RT- LAB simulation software enables the parallel simulation of power drives and electric circuits on clusters of a PC running QNX or RT- Linux operating systems at sample time below 10 µs. Using standard Simulink models including SimPowerSystems models, RT-LAB build computation and communication tasks are necessary to make parallel simulation of electrical systems. The code generated by the Real-Time Workshop of RT- LAB is linked to the OP5600 digital real-time simulator. A case study example of real-time simulation of an induction motor system is presented.This paper discusses methods to overcome the challenges of real-time simulation of an induction motor system synchronizing with a real-time clock.</span>

Geartrain Reduction for Real-Time Simulation of a Multibody Wind Turbine Gearbox Model

2014 ◽  
Author(s):  
Ryan Schkoda
Keyword(s):  
Wind Turbine ◽  
Real Time ◽  
High Frequency ◽  
Load Path ◽  
Wind Turbine Gearbox ◽  
Real Time Simulation ◽  
Multibody Model ◽  
Input Shaft ◽  
Time Simulation ◽  
Testing Facility

This paper presents a reduction strategy for a multibody model of a 7.5 MW gearbox located at Clemson University’s Wind Turbine Drivetrain Testing Facility in North Charleston, SC. A model reduction is needed because of a high frequency dynamic associated with the input shaft of the gearbox which prevents the model from being executed in real-time. This particular gearbox has an atypical input stage configuration whereby the load path is split into two parallel shafts before being recombined at the sun shaft. The strategy includes removing model elements associated with high frequency vibration, merging model elements, and locating model elements where needed. The presented strategy successfully removes the problematic eigenvalues, maintains basic dynamic character, and results in a multibody gearbox model suitable for real-time simulation.

scholarly journals Real-Time Simulation of Power Conversion in Doubly Fed Induction Machine

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 673 ◽  
Author(s):  
Zbigniew Kłosowski ◽  
Sławomir Cieślik
Keyword(s):  
Real Time ◽  
Induction Machine ◽  
New Method ◽  
Electrical Circuits ◽  
Real Time Simulation ◽  
Electrical Systems ◽  
Time Simulation ◽  
Calculation Step ◽  
Doubly Fed Induction Machine ◽  
Doubly Fed

Currently used methods of simulation of doubly fed induction machines (DFIM), especially in real-time simulators (where a relatively large calculation step is used and high adequacy is required), do not provide the required adequacy, especially in rotor electrical circuits. In order to increase the adequacy of reproducing of electrical processes occurring in the circuits of the wound DFIM rotor, this paper presents a proposal and a verification of a new method of real-time simulation. The new method of mathematical modeling of electrical circuits uses voltage averaging at the calculation step. This method was supplemented by prediction of the machine’s rotor angle, which significantly increases the degree of adequacy of reproducing physical quantities present in DFIM, especially in the machine’s rotor. This method allows real-time simulation of electrical systems with a relatively large calculation step (of the order of 200 µs), while maintaining an appropriate degree of adequacy.

scholarly journals FPGA-based real-time simulation for EV station with multiple high-frequency chargers based on C-EMTP algorithm

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Zirun Li ◽  
Jin Xu ◽  
Keyou Wang ◽  
Pan Wu ◽  
Guojie Li
Keyword(s):  
Real Time ◽  
High Frequency ◽  
High Frequency Power ◽  
Time Step ◽  
Simulation Accuracy ◽  
Real Time Simulation ◽  
Operating Modes ◽  
Dual Active Bridge ◽  
Time Simulation ◽  
Frequency Power

AbstractThe electric vehicle (EV) charging station is a critical part of the infrastructure for the wide adoption of EVs. Real-time simulation of an EV station plays an essential role in testing its operation under different operating modes. However, the large numbers of high-frequency power electronic switches contained in EV chargers pose great challenges for real-time simulation. This paper proposes a compact electromagnetic transient program (C-EMTP) algorithm for FPGA-based real-time simulation of an EV station with multiple high-frequency chargers. The C-EMTP algorithm transforms the traditional EMTP algorithm into two parallel sub-tasks only consisting of simple matrix operations, to fully utilize the high parallelism of FPGA. The simulation time step can be greatly reduced compared with that of the traditional EMTP algorithm, and so the simulation accuracy for high-frequency power electronics is improved. The EV chargers can be decoupled with each other and simulated in parallel. A CPU-FPGA-based real-time simulation platform is developed and the proposed simulation of the EV station is implemented. The control strategy is simulated in a CPU with 100 μs time-step, while the EV station circuit topology is simulated in a single FPGA with a 250 ns time-step. In the case studies, the EV station consists of a two-level rectifier and five dual-active bridge (DAB) EV chargers. It is tested under different scenarios, and the real-time simulation results are validated using PSCAD/EMTDC.

Real Time Simulation of a VCM Plant

1997 ◽  
Vol 21 (1-2) ◽  
pp. S1111-S1115
Author(s):  
P Lundstrøm
Keyword(s):  
Real Time ◽  
Real Time Simulation ◽  
Time Simulation
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