| 摘要 |
<p>The present invention relates to an apparatus for compensating a voltage dip for an electromagnetic contactor capable of maintaining the operation of the electromagnetic contactor by using energy stored in an electrolytic condenser in case of a voltage dip. The apparatus for compensating a voltage dip for an electromagnetic contactor of the present invention comprises: an FET unit having the electrolytic condenser to operate the electromagnetic contactor in case of a voltage dip and outputting sine waves by making four FETs make two pairs and perform switching operations; an FET driving unit for driving the FET unit through the generation and output of 60Hz square waves, 120Hz square waves and PWM waves; and a compensating apparatus power providing unit having the electrolytic condenser to operate the FET driving unit in case of a voltage dip.</p> |
