论文部分内容阅读
变频器的控制回路干扰共有六种: (1) 静电耦合干扰,指控制电缆与周围电气回路的静电容耦合,在电缆中产生的电势。可加大与干扰源电缆的距离,使距离为导体直径的40倍以上,并在两电缆间设置屏蔽导体且接地。 (2) 静电感应干扰,指周围电气回路产生的磁通变化在电缆中感应出的电势。可将控制电缆与主回路电缆或其他动力电缆分离铺设,将控制导体绞合,铺设路线取短。
There are six kinds of interference in the control loop of the inverter: (1) Electrostatic coupling interference refers to the potential generated in the cable by coupling the static capacitances of the control cables and the surrounding electrical circuits. The distance from the source cable can be increased so that the distance is more than 40 times the conductor diameter and a shield conductor is placed between the two cables and grounded. (2) Electrostatic induction interference refers to the potential induced in the cable by the change of flux generated by the surrounding electrical circuit. The control cable can be separated from the main circuit cable or other power cables and the control conductors can be twisted together to short the route.