Interference suppression on motor connection cables for frequency converters

摘要: It is a fact that frequency converters operate asynchronous AC-motors are an inherent source of conducted and radiated interference. This attributes to the short pulse rise time modulated output voltage converter. Because converter itself cannot be changed, suppression interference possible only through external means. For this reason, broadband inductive filtering generally used suppress peaks on motor. Normal industry practice use conventional shielded cable in conjunction with prescribed EMI-filter reduce When substituted ferrite layered low pass cable, difference level reduction dramatic. The coated assures asymmetric current significantly reduces emission. comparison presented described.