Summary
International Symposium on Electromagnetic Compatibility
2009
Session Number:22Q3
Session:
Number:22Q3-4
A New Approach for Measurement of Common-Mode Voltage Fluctuation with WBFC
Y. Mabuchi,
pp.425-428
Publication Date:2009/7/20
Online ISSN:2188-5079
Summary:
In electronic control units (ECUs), electromagnetic compatibility (EMC) and electromagnetic interference (EMI) are issues to be solved. Common-mode current can be a main cause of EMI in ECUs. In this paper, a new approach to measure the common-mode voltage fluctuation on the ECU with the WBFC is proposed. From the theoretical consideration, it is shown that the value of the common-mode voltage fluctuation obtained from the proposed WBFC method is proportional to the value of the common-mode current on the wire-harness in the CISPR 25 measurement setup. With the proposed WBFC method, the common-mode voltage fluctuation on the evaluation PCB is measured and its values are compared with the measured values of the common-mode current obtained by using CISPR 25 setup. From the comparison, it is shown that the results obtained from these two measuring methods show strong correlation.