Classification of electromagnetic interference sources for electric vehicles
Vehicle interference source
It mainly refers to the electromagnetic interference generated by various electronic and electrical systems on the vehicle. Vehicle interference sources mainly include electronic equipment such as drive system, power battery, power converter, relay, electric auxiliary system, switch, communication equipment and microprocessor. The electromagnetic propagation modes of vehicle-mounted interference sources include conducted interference and radiated interference.
natural sources of interference
Natural sources of interference refer to electromagnetic interference caused by natural phenomena. The electromagnetic noises generated by typical natural electromagnetic phenomena include atmospheric noise, solar noise, cosmic noise and electrostatic discharge. In most cases, this electromagnetic noise is very complex and has a negligible impact on the car. However, lightning and electrostatic discharge can generate large transient field strengths.
source of human interference
The source of human interference refers to the electromagnetic interference generated by artificial devices outside the car. There are mainly radiation interference from other vehicles, electromagnetic wave interference emitted by radars, radio transmitters, mobile communication equipment, etc. outside the vehicle, as well as the discharge of high-voltage power lines.