Automotive

Robutness analysis of ESC ECU to characteristic variation of vehicle chassis components using HILS technique

Publication date : Mar 2014
Paper File : Not available yet

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Author(s)

J. J. KWON, T. W. HONG, K. PARK, S. J. HEO, K. W. LEE, W. W. KIM, H. C. KOO and M. B. PARK,

Abstract

The ESC system, since its introduction in the mid 90s, has greatly contributed to prevention of vehicle accidents with its capability of maintaining vehicle stability in severe driving conditions. Due to its significant advantages, many nations are now adopting regulations that mandate installation of the ESC system in all classes of passenger vehicles – from mini to luxury. Accordingly it became important to know whether an ESC ECU can yield good performance on a wide range of vehicle parameter changes. In this paper, robustness analysis was conducted to study how characteristic variation of the main chassis components affect the performance of the ESC ECU. This analysis was carried out using a HILS system built on an actual ESC ECU. The variation range of each chassis component was carefully selected considering the component’s design criteria adopted in automotive industries. Based upon the robustness analysis results, the allowable variation ranges of the chassis components for ensuring sound performance of an ESC ECU were proposed.

Minor release RT-LAB 10.7.1 with new features and bug fixes

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Following the feedback of its customers, OPAL-RT launched an update to its RT-LAB simulation software this week. RT-LAB 10.7.1 enables new features and major bug fixes.

March 14, 2014 - Montreal, Quebec

Review of state-of-the-art solver solutions for HIL simulation of power systems, power electronic and motor drives

Publication date : Oct 2013
Paper File : Review of state-of-the-art solver solutions for HIL simulation.pdf



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Author(s)

Vahid Jalili-Marandi, Sébastien Cense, Jean Bélanger, Christian Dufour,

Abstract

In this paper, we review state-of-the-art solvers and techniques applicable to HIL simulation of power systems, power electronics and motor drives. These methods can be distinguished by the applications as well as the computational hardware engines used. Industrially speaking, there are two main types of hardware used today to make HIL: multi-core CPUs and FPGAs. Other promising technologies like, GPU (and similar approaches such as Intel 100 cores ‘ Xeon phi’ co-processors), are also possible and rather similar to multi-CPU approach but not discussed in this paper .

OPAL-RT TECHNOLOGIES Newsletter - December 2013

Description

Publication date: Tue, 12/31/2013 - 15:46

Author(s)

Newsletter File

OPAL RT Newsletter - December 2013.pdf

Industries

Aerospace, Automotive, Education & Research, Electrical & Power, Mechatronics

Related Product(s)

HIL simulation testing

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As intelligence in vehicles rapidly grows, real-time simulation testing of advanced electronic control units is becoming an integral part of automotive software development.

February 4, 2014 - Montreal, Quebec

FPGA motor simulation

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Field-programmable gate arrays are replacing commercial central processing units in order to successfully achieve high-fidelity simulation for testing control units for electric motor drives.

February 4, 2014 - Montreal, Quebec

Performance comparison of a two-level and three-level inverter permanent magnet synchronous machine drives for HEV application

Publication date : Oct 2013
Paper File : Not available yet

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Author(s)

Choudhury Abhijit, Pillay Pragassen, Williamson Sheldon, Masisi Lesedi,

Abstract

This paper investigates the performance of a two level and a three level inverter drives for a permanent magnet synchronous machine (PMSM) under different switching frequencies. The experiments were conducted via a real time based system called OPAL-RT. The inverters were operated at 1 kHz and 5 kHz switching frequencies. The torque was varied between 2 N.m and 4 N.m at a constant speed of 800 rpm. However the torque ripples and the copper losses between the two inverter drives were similar and the copper losses were independent of the switching frequency. At 5 kHz inverter switching frequency the two level inverter performed better at 4 N.m with a total current harmonic distortion of 2.55% and a torque ripple of 10%. However overall the three level inverter had low voltage and current harmonic distortion which translates to lower iron losses. Switching at 5 kHz frequency showed to have lower overall harmonic distortion than at 1 kHz for both inverters. The greater the capacitor voltage error the more the torque ripples even though the machine registered lower current total harmonic distortion for the three level inverter.

OPAL-RT launches an update of its simulation software: RT-LAB 10.7

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OPAL-RT launched an update to its RT-LAB simulation software this week. RT-LAB 10.7, entirely integrated with MATLAB/Simulink®, is a real-time open simulation software environment that, with its flexibility and modularity, has revolutionized modeling design practices.

December 17, 2013 - Montreal, Quebec

Impact of plug in electric vehicle battery charging on a distribution system based on real-time digital simulator

Publication date : Dec 2013
Paper File : Impact of plug in electric vehicle battery charging on a distribu.pdf



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Author(s)

Abdulelah Yousef Alharbi,

Abstract

This study investigates the impact of the electric vehicles (EVs’) battery charging on the distribution system in terms of maximum voltage deviation, voltage unbalance at various locations, transformers overloading, and introducing new peaks into the system. In this research, a 12.47 kV real distribution network has been modeled using real time digital simulator, using real data from a power distributor. The study presents four different scenarios of uncoordinated EVs integration for two different charging times (evening and night) and two different charging rates (level I and level II) at different penetration levels ranging from 10% to 100%. Voltage unbalance at different locations is determined and transformer overloading is analyzed. The influence of EVs charging on the daily load curve is shown. It is noted that actual system data of voltage and current at all intellirupters of the utility distribution system were close to the data of the simulated system.

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