Loic Schoen

A Modern and Open Real-Time Digital Simulator of All-Electric Ships with a Multi- Platform Co-Simulation Approach

Publication date : Apr 2009
Paper File : Paper_ESTS_2009_Opal-RT_Final.pdf



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Author(s)

Wei Li, Loic Schoen, Jean-Nicolas Paquin, Jean Bélanger, Irene Peres, Hugo Kohmann, Cristina Olariu,

Abstract

Designing an All-Electric Ship (AES) requires testing of the interaction between hundreds of interconnected power electronic subsystems built by different manufacturers. Such integration tests require large analog test benches or the use of actual equipment during system commissioning. Fully digital simulators can also be used to perform Hardware-in-the-Loop (HIL) integration tests to evaluate the performance of some parts of these very complex systems. This approach, in use for decades in the automotive and aerospace industries, can significantly reduce the costs, duration and risks related to the use of actual equipment to conduct integration tests. However the computational power required to conduct detailed simulation of such diverse and numerous power electronic components can only be achieved through the use of distributed parallel supercomputers, optimized for hard real-time performance with jitter in the order of a few microseconds. Such supercomputers have traditionally been built using expensive custom computer boards. This paper presents the technology and performance achieved by the eMEGAsim real-time digital simulator, which is capable of meeting these challenges through the use of standard commercial INTEL quad-core computers interconnected by DOLPHIN SCI communication fabric. The precision achieved in the simulation of a detailed power electronic model implemented with SIMULINK and SimPowerSystems, and executed in parallel with RT-LAB, will also be presented using a typical basic AES configuration. Furthermore, AES design implies the collaboration between several multidisciplinary teams using different tools to simulate all electrical, mechanical and fluid dynamic subsystems. The ORCHESTRA real-time co-simulation publish-and-subscribe framework enabling the integration of multi-domain simulation tools will also be presented.

PC-Cluster-Based Real-Time Simulation of an 8-synchronous machine network with HVDC link using RT-LAB and TestDrive

Publication date : Jun 2007
Paper File : 2007_ipst_dualkundurhvdc_dufour.pdf



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Author(s)

Vincent Lapointe, Loic Schoen, Jean-Nicolas Paquin, Jean Bélanger, Christian Dufour,

Abstract

In this paper, we detail the real-time simulation results of a medium-sized network composed of 8 synchronous machines and an HVDC link. The model is composed of two Kundur-like 4 machines networks connected together with a 12-pulse HVDC link. The complete network is modeled with SimPowerSystems with ARTEMIS real-time plug-in and is simulated in real-time on a RT-LAB InfiniBand PC-cluster composed of 3 dual-CPU dual-core Opteron PCs. The network model includes the HVDC control and protection systems as well as the synchronous machine regulators and power stabilizers. It also includes typical fault simulation capability like HVDC DC faults, thyristor misfires and AC faults. This model is excellent to study the complex interactions between an HVDC link and AC network under normal and transient conditions. The real-time simulation is controlled and monitored with a TestDrive interface from Opal-RT. This interface, based on LabView, permits easy monitoring and control of the complete system and enables Python-based scripting for automated tests. The proposed simulator can be interfaced with external equipments and controllers by direct reconfiguration of a FPGA I/O card with Xilinx System Generator blockset.

A Distributed Real-Time Framework for Dynamic Management of Heterogeneous Co-simulations

Publication date : May 2006
Paper File : scs_article.pdf



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Author(s)

Vincent Lapointe, Loic Schoen, Jean-Francois Cécile, Jean Bélanger,

Abstract

Simulation of complex systems usually requires that heterogeneous models be integrated into a single simulation environment. Because these models are often developed by different teams, or depend on various commercial simulation tools (such as SimulinkTM, DymolaTM or SystemBuildTM), considerable effort is expended in configuring the corresponding components into a cohesive co-simulation. As part of its research and development efforts, Opal-RT has developed RT-LAB Orchestra, a software application that facilitates integration and interoperability between co-simulation components. RT-LAB Orchestra is an application-level data communication layer that sits on top of Opal-RT’s RTLAB framework, a proven real-time architecture for distributed simulations.

eMEGAsim: An Open High-Performance Distributed Real-Time Power Grid Simulator

Publication date : Dec 2007
Paper File : PAPER_-_CPRI_BANGALORE_121207_FINAL.pdf



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Author(s)

Vincent Lapointe, Loic Schoen, Jean Bélanger, Christian Dufour,

Abstract

This paper describes the architecture and specifications of advanced real-time simulators capable of accurately simulating electrical power grids and power electronic systems of any size. The OPAL-RT eMEGAsim simulator is based on modern high-performance distributed supercomputer technology comprised of off-the-shelf INTEL or AMD multi-core processors. Several eight-processor shared-memory supercomputer modules are interconnected with fast PCI Express communication links and IO systems controlled by Field Programmable Gate Array (FPGA) Xilinx processors capable of executing sub-system models with time step below 250 nanoseconds. A brief history of the evolution of real-time simulators will be given followed by the main specification requirements for each type of application, a description of the simulator architecture and a typical application case.

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