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EMC in dual voltage vehicle electrical system: experimental investigation of transient disturbance problems and comparison with conventional 14V electrical systems behavior

机译:EMC在双电压车辆电气系统中:瞬态扰动问题的实验研究与传统14V电气系统行为的比较

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This paper is focused on some Electromagnetic Compatibility problems concerning automotive electrical loads in Dual-Voltage vehicle architecture. Transient disturbances produced by a new prototypical vehicle electrical load have been analysed. In particular the considered electrical load is a DC cooling fan drive intended for a 42 V rated voltage. Both current and voltage transient disturbances produced by the 42 V cooling fan drive have been measured and critically analysed, in time and frequency domain. The reason for such an investigation is to define the characteristics of electromagnetic environment in new Dual-Voltage (14/42 V) vehicle electrical architecture and so to contribute to technical standardisation of the automobiles in the field of EMC. Suitable experimental measurement systems have been set up in order to measure and experimentally compare transient disturbances produced by the considered 42 V drive and 14 V cooling fan drive (used in conventional vehicle electrical architecture), both during start and stop operation. Particular care has been put in realising the experimental measurement system for 42 V drive, as no related technical standard references currently exist. Moreover the effects due to the introduction of a power electronic device, instead of a conventional electromechanical relay, have been evaluated, showing a reduction of transients' heaviness.
机译:本文专注于双电压车辆架构中的汽车电负荷的一些电磁兼容性问题。通过新的原型车辆电荷产生的瞬态扰动已经分析。特别地,所考虑的电负载是用于42V额定电压的直流冷却风扇驱动器。通过42V冷却风扇驱动器产生的电流和电压瞬态扰动,并在时间和频域中测量和批判性地分析。这种调查的原因是在新的双电压(14/42V)车辆电气架构中的电磁环境的特性,从而有助于EMC领域的汽车技术标准化。已经建立了合适的实验测量系统,以便测量和通过实验地比较由所考虑的42V驱动器和14V冷却风扇驱动器(在传统的车辆电气架构中使用)产生的瞬态扰动,包括在开始和停止操作期间。确实注意到实现了42 V驱动器的实验测量系统,因为目前没有任何相关的技术标准参考。此外,已经评估了由于引入电力电子器件而不是传统的机电继电器引起的效果,显示出瞬态沉重的降低。

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