Dynamometer resonance suppression device based on C-type filter and dynamometer system

The utility model provides a dynamometer resonance suppression device based on a C-type filter and a dynamometer system, comprising an active damping device and a passive damping device, the passive damping device is used for suppressing system resonance, filtering residual switch ripples of a PWM rectifier of a frequency converter, improving system electromagnetic compatibility characteristics, i.e., EMC characteristics, and improving system reliability. The active damping device works in a resonance damping mode and suppresses system resonance together with the active damping device; the active damping device is responsible for switching control of the passive damping device and counteracts capacitive current of a passive network, and is high in response speed, high in precision, low in cost and more reliable. 本实用新型提出了一种基于C型滤波器的测功机谐振抑制装置以及测功机系统，包括有源阻尼装置与无源阻尼装置，无源阻尼装置用于抑制系统谐振，同时滤除变频器的PWM整流器的剩余开关纹波，提高系统电磁兼容特性即为EMC特性,工作于谐振阻尼模式，与有源阻尼装置一起抑制系统谐振；有源阻尼装置负责无源阻尼装置的投切控制，同时抵消无源网路的容性电流，响应速度快，精度高，成本低，更可靠。