描述
無論是哪一種變頻器,都大量使用了晶閘管等非線性電力電子元件,不管采用哪種整流方式,變頻器從電網(wǎng)中吸取能量的方式都不是連續(xù)的正弦波,而是從脈動的斷續(xù)方式向電網(wǎng)索取電流,這種脈動電流和電網(wǎng)的沿路阻抗共同形成脈動電壓降疊加在電網(wǎng)的電壓上,使電壓發(fā)生畸變,經(jīng)傅立葉原理分析可知,這種非同期正弦波電流是由于頻率相同的基波和頻率大于基波頻率的諧波組成。
General Electric DS3800HMHA1E1F Control Card
GENERAL ELECTRIC DS3800NBIC USPP DS3800NBIC
General Electric DS3800DGRA1F1C Regulator Card NEW
GENERAL ELECTRIC DS3800HSCG NSFP DS3800HSCG
GENERAL ELECTRIC DS3800NHVJ1A1A NSPP DS3800NHVJ1A1A
GENERAL ELECTRIC DS3800NHVD1E1B USPP DS3800NHVD1E1B
GENERAL ELECTRIC DS3800NGRC1H1G USPP DS3800NGRC1H1G
General Electric DS3800NDAC1B1C Circuit Board
GENERAL ELECTRIC DS3800HPCA1F USPP DS3800HPCA1F
GENERAL ELECTRIC DS3800HDRA USPP DS3800HDRA
GENERAL ELECTRIC DS3800HSCD USPP DS3800HSCD