Vehicle dynamic electromagnetic compatibility test Based on Real-time spectrum method

Existing automotive EMC standardized test methods only concerning radiated emissions based on stable driving condition, which gives results lower than real world’s worst-case. This article presents measured results carried out inside an automotive EMC chamber of test methodologies that assess the radiated emissions of drive motor system under dynamic drive conditions. Based on standard test layout, the feasibility of real-time spectrum method is discussed. The frequency bands of 150 kHz to 30 MHz and 30 MHz to 1 GHz are concerned for worst-case radiation emissions. Furthermore, this real-time spectrum test method can assist EMC troubleshooting of vehicles, gives quick identification of the source of excessive electromagnetic radiation of vehicles.