[MBD Case Study] Verification of ECU Fail Detection during Inverter Switch Failure
Verification of whether failure detection during inverter malfunction can be performed within the detection time (within 100 ms).
This document verifies whether a failure can be detected within 100 ms of the occurrence of an open fault in the U-phase upper arm. Failure detection is determined by extracting components of fourth order or higher from the current waveform using a high-pass filter. 【Contents】 ■ System Configuration ■ Controller Specifications ■ Motor Specifications ■ Verification Details ■ Verification Results ■ Discussion *For more details, please download the PDF or feel free to contact us.
basic information
[Considerations] ■ By using the JMAG-RT model (air conditioning harmonic model), it was possible to detect failure during inverter faults within the detection time (within 100ms). ■ The failure detection logic detects the distortion of current that occurs during a disconnection to make a judgment; however, in the linear model, the waveform is close to a sine wave, and no harmonic components are generated, leading to misjudgment (failure to detect disconnection). ■ The results detected using the JMAG-RT model in the MATLAB/Simulink (MILS) environment closely match the results verified in the RT-Sim-III (HILS) environment, confirming that it can be used for validation with actual ECUs and in abnormal scenarios. *For more details, please download the PDF or feel free to contact us.
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