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COMMON MODE amp; DIFFERENTIAL MODE FILTER FOR VARIABLE SPEED DRIVE
COMMON MODE amp; DIFFERENTIAL MODE FILTER FOR VARIABLE SPEED DRIVE
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机译:变速驱动器的共模和差分模式滤波器
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摘要
Systems and methods for improved Variable Speed Drives having active inverters include an input filter for filtering common mode and differential mode currents. A three-phase inductor has three windings, each winding of the three-phase inductor having a center tap dividing each winding into a pair of inductor sections; and a three-phase input capacitor bank connected in a wye configuration to the three center taps at one end, and to a common point at the opposite end. The three-phase input capacitor bank provides a short circuit for frequencies above a predetermined fundamental frequency for shunting such frequencies through the three phase capacitor bank, while passing the predetermined fundamental frequency to an input AC power source.
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