Collaboration automates and speeds up EMC tests under real driving conditions

AVL and Rohde & Schwarz present an innovative solution for automated EMC data analysis of an electric drivetrain under real driving conditions.

The electrification of vehicles produces new EMC challenges through higher switching frequencies of semiconductors and higher emissions due to high voltages and currents. EMS and EMI testing of components and vehicles manage these challenges. To satisfy time-to-market demands, test automation is important. Also, the tests must be as realistic as possible, so there is a trend from static EMC testing of vehicles to dynamic testing where the drivetrain is active, varying speed and torque through the execution of the EMC test.

The real-time synchronisation of measurement data between the EMC testbed, measurement system and automation software is crucial to efficient and repeatable EMC-compliant component and vehicle development. Therefore, the companies have developed a solution that aids automated testing with a simulation of real driving conditions while covering typical automotive standards. The AVL PUMA 2 automation controls the test cycle and stores the measured data in synchronisation with the R&S ELEKTRA EMC test software to exchange information between the testbed and the EMC measurement equipment. The ELEKTRA software has been modified to allow automatic and seamless communication with AVL CONCERTO software, substituting a previously manual process. This software post-processing the measured data automatically and provides a full test report according to the pre-defined pass and fail criteria.

R&S ELEKTRA controls complete EMC systems and automates measurements of EUT being certified for emissions (EMI) and immunity (EMS). The software eases the configuration of test systems and test descriptions in accordance with common standards. It quickens test execution and paves the way to generate a comprehensive test report swiftly.

“Many customers have been wanting for years to see Rohde & Schwarz EMC analysers connected to the AVL EMC test automation system. Together, we have finally accomplished this and are pleased to offer this new solution, improving and accelerating EMC validation of e-drives and vehicles,” states Alban Hemery, department manager for E-Motor Test Systems and EMC Applications at AVL List GmbH.

“As market leader in EMC instrumentation, Rohde & Schwarz has a long and productive history of collaboration with AVL to develop leading-edge test systems for the automotive industry. The enhancement of R&S ELEKTRA to be compatible with AVL’s PUMA 2 is another significant step speeding up EMC test times under real driving conditions, particularly for electric drivetrains,” adds Juergen Meyer, vice president Market Segment Automotive at Rohde & Schwarz.