DEVICE FOR SEPARATING THE RADIO NOISE VOLTAGES OF THREE-PHASE CONVERTER SYSTEMS INTO A COMMON MODE COMPONENT AND A PUSH-PULL COMPONENT

摘要

The invention relates to a device (11, 56) for splitting radio noise voltages of a multi-phase electrical system into a common mode part (2) and push-pull parts (3, 4, 5), said device comprising at least two inputs (8, 9, 10) for feeding radio noise voltages into the device (11, 56), and an active or passive electrical circuit for splitting the radio noise voltages into a common mode part (2) and at least two push-pull parts (3, 4, 5). Said device also comprises at least two star-connected elements (12, 13, 14, 76, 77, 78) that are respectively mounted between an input (8, 9, 10) and an electrical star point (21, 79), a resistive element mounted between the star point (21, 79) and a reference potential (7), and at least two active or passive voltage transmitters (12, 13, 14, 90, 91, 92) for transmitting the voltages occurring on the at least two star-connected elements (12, 13, 14, 76, 77, 78), caused by said push-pull parts (3, 4, 5).