Test and analysis of conducted disturbance sources of the truck crane under transition conditions

Based on the results of the field measurement, analyses of the time domain characteristic of possible conducted disturbance sources have been done and typical waveforms have been concluded to develop the EMC (Electromagnetic Compatibility) research of the lifting component of the truck crane. Focusing on the correspondence between time parameters of the disturbance of the sources and victims, this paper reveals the generation mechanism of the coupled disturbance. The amplitude and frequency parameters of the main disturbance sources are compared with the standard immunity test pulses suggested by ISO7637-2. The differences between them indicate that the extant standard might not apply to the test of the truck crane without adjustment. The presented results could form a sound basis for the development of a special standard for the EMC test of the truck crane and further relevant EMC research.