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.
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[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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Our company is an electronic measuring instrument sales agency established in Yokohama in 1967. We handle current and voltage measuring instruments, frequency measuring instruments, noise and vibration measuring instruments, environmental testing machines, infrared thermography, and more, working to solve the challenges of a wide range of customers, including manufacturers of electrical products, automobile manufacturers, universities, and government agencies. Currently, we are supported by many customers at our nine domestic locations in Tokyo, Yokohama, Atsugi, Hamamatsu, Nagoya, Mie, Kyoto, Osaka, and Okayama, as well as two overseas locations.