Electromagnetic interference control device for vehicle-mounted generator control system

Abstract

The invention discloses an electromagnetic interference control device for a vehicle-mounted generator control system, which is characterized by comprising at least one filter, a base and an anti-magnetic shielding cover, wherein the at least filter is selected from the following filters: a three-phase input filter which is connected between a generator and a generator controller, a RS232 signal filter which is connected between the generator controller and a control panel, a one-way output filter which is connected between the generator controller and a vehicle-mounted power source, a direct-current input filter which is connected between the generator controller and a vehicle jar, and an excitation output filter which is connected between the generator controller and the generator; the base is used for placing the filter and the generator controller; and the anti-magnetic shielding cover is covered on the base. The invention can solve the interference problem simultaneously in two ways of radiation and filtration without changing original generator control input / output signals or increasing engine loads, thereby eliminating the influence of the vehicle-mounted generator system on vehicle-mounted short-wave communication.

Description

technical field [0001] The invention relates to the field of vehicle-mounted generators, in particular to an electromagnetic interference control device used in a vehicle-mounted generator control system. Background technique [0002] Electromagnetic interference (EMI) specifically refers to a harmful interference phenomenon that exists between electronic devices in the form of electromagnetic energy and may have a negative impact on the normal operation of electronic devices. Electromagnetic interference (EMI) can transmit interference in the form of conduction through the connection between devices. This kind of interference is called EMI conducted electromagnetic interference; or through the shared space between devices, it can spread interference in the form of electromagnetic wave radiation. This kind of interference is called EMI radiated electromagnetic interference. [0003] The frequency range of EMI electromagnetic interference is very wide. According to the actua...

AI Technical Summary

Problems solved by technology

[0006] The small on-board power generation system has always been very normal in normal use, but when it is required to establish timely on-board communication between various operational units, especially when the general communication facilities (such as mobile phones) are no longer available, the on-board short-wave communication system needs to be used , found that the on-board generator controller system will cause serious interference to the radio frequency of 2-10MHz, resulting in the failure of most channels of communication equipment using short-wave band intercom to communicate normally

Moreover, the use of common shielding and conventional filters cannot eliminate this type of special interference at all, resulting in the inability to carry out short-wave communication when the vehicle is running normally. great inconvenience

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