新能源汽车馈电模式下发电机冲击电流伤害的研究

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中图分类号：U469.72 文献标识码：A 文章编号：1003-8639（2025）10-0059-03

【Abstract】This paper studies the electronic system faults （such as occasional staling during idling and creep）of a certainvehicle modelcausedbymotorinrushcurrent inthefeedmode.Throughsystematicinvestigationand experimental verification，itisfoundthattherootcauseofthefaultliesintheinsuficientoutputcapacityofthemotorinthefeedmode， combined with the instantaneous high curent demand of electrical appliances such as vacuum pumps and fans， which leads toa drop inthe supplyvoltage.It also causessignal interference to the wheel speed sensor.An improved scheme of upgrading the generator power to over 14OA andoptimizing the anti-interference design of the sensor is proposed. Experiments showthat the improved schemecan efectivelyreduce thefault recurrencerate and provideareference for suppressingtheinrushcurrentof the motorinthefeed modeand improving thereliabilityof thevehicle electronic system.

【Key words】feed mode；motor inrush current;voltage drop；electromagnetic compatibility；dynamic filtering

0 引言

现代汽车电子系统作为车辆核心单元，是保障车辆正常运行的关键要素。（剩余4061字）