描述
无论是哪一种变频器,都大量使用了晶闸管等非线性电力电子元件,不管采用哪种整流方式,变频器从电网中吸取能量的方式都不是连续的正弦波,而是从脉动的断续方式向电网索取电流,这种脉动电流和电网的沿路阻抗共同形成脉动电压降叠加在电网的电压上,使电压发生畸变,经傅立叶原理分析可知,这种非同期正弦波电流是由于频率相同的基波和频率大于基波频率的谐波组成。
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