Multistage filtering structure, motor controller and vehicle

Abstract

The invention discloses a multi-stage filtering structure, a motor controller and a vehicle, the multi-stage filtering structure is fixed at a DC end in a controller shell, the head end of the DC end is a high-voltage bus, the tail end of the DC end is a thin-film capacitor, and the multi-stage filtering structure comprises a first-stage filtering fixing seat assembly and a second-stage filtering fixing seat assembly; the first-stage filtering fixing seat assembly and the second-stage filtering fixing seat assembly are arranged in the controller shell; the input end of the high-voltage bus is correspondingly connected with the positive and negative pole input ends of the first-stage filtering fixing seat assembly; the positive and negative output ends of the first-stage filtering fixing seat assembly are correspondingly connected with the positive and negative input ends of the second-stage filtering fixing seat assembly respectively; and the positive and negative output ends of the second-stage filtering fixing seat assembly are correspondingly connected with the positive and negative input ends of the thin-film capacitor respectively. Through integrated and modular design, numerous filter devices are integrated together, and it can be ensured that the EMC capacity of the DC end of the controller is improved to the maximum extent in a limited space.

Description

technical field [0001] The invention relates to the technical field of motor controllers, in particular to a multi-stage filter structure, a motor controller with the multi-stage filter structure, and a vehicle with the motor controller. Background technique [0002] Electromagnetic Compatibility (EMC) refers to the ability of a device or system to work normally in its electromagnetic environment without constituting anything in the environment that cannot withstand electromagnetic disturbance. According to the definition of EMC, electronic equipment must meet the EMC design indicators. On the one hand, it is necessary to ensure that the electronic equipment has a certain degree of immunity to electromagnetic interference in the environment. On the other hand, it is required that the electromagnetic interference generated by the electronic equipment during operation The specified limit values ​​must not be exceeded. [0003] The automotive motor controller is a typical elec...

AI Technical Summary

Problems solved by technology

When there are enough filter components, the space for the filter module at the DC end of the controller will be enlarged, the design space at the DC / AC end will be compressed, and the design difficulty will be significantly increased; on the other hand, the filter components are independent, and the integration of the filter module The degree is low, the installation process is cumbersome, the production cycle of the controller product will be extended, and the production efficiency will be significantly reduced

Images