k24 594 Res. on RFI anti-interference fil. in meas. of conducted disturbances for an ind. heater скачать в хорошем качестве

k24 594 Res. on RFI anti-interference fil. in meas. of conducted disturbances for an ind. heater

28th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems (KES 2024) Research on RFI anti-interference filters in measurements of conducted disturbances for an induction heater Abstract The article discusses the design process and research of RFI filters in Electromagnetic Compatibility (EMC) measurements concerning conducted disturbances for an induction heater. In the simulation studies, the Simulink package of Matlab software was used to create computer models of the filters. The experimental studies utilized an artificial network HM 6050-2 by Hameg and a spectrum analyzer HMS 3000, allowing for precise analysis of signals in the frequency domain ranging from 150kHz to 30MHz, which was essential for assessing device compliance with EMC standards. This study introduces an innovative approach to designing RFI filters for an induction heater, focusing on the effectiveness of suppressing conducted disturbances. The novelty of the research lies in the application of a combination of low-pass filters and common-mode chokes with different parameters, which allowed for compliance with stringent EMC standards. The work examined ten different RFI filters, three of which showed satisfactory filtering characteristics. The first-order filters under study did not meet the standards; according to simulations and EMC tests, it was found that as the inductance of the filter’s common-mode choke increased, its falling edge became steeper. Significantly better results were achieved with two- and three-stage filters, where the serial connection of simple filters resulted in a substantial reduction of conducted disturbances and, consequently, compliance with stringent standards. The design solutions along with electromagnetic compatibility studies were discussed in the paper.