Speaker
Description
Verifying the level of conducted emissions is very important from the perspective of electromagnetic compatibility. Depending on the environment in which the equipment operates, different allowed emission levels of disturbances are acceptable as a function of frequency. The article presents a research stand, also used for didactic purposes, by the standard PN-EN 55011, which specifies the frequency range between 150 kHz and 30 MHz. The tested object is a power drive system with two different electric motors to choose from, which act as a source of disturbances. The length and type of the cable connecting the inverter with the selected electric motor are verified for their different rotational speeds. The shield is floating at both ends, possibly connecting an unshielded adapter. In addition, the stand is also intended to select and verify filter components. The selection of filter components was carried out using measuring clamps, which are used to measure the common and differential mode.
