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APPARATUS FOR CONTROLLING OPERATION OF RECIPROCATING COMPRESSOR, AND METHOD THEREOF FOR SECURING THE MAXIMUM COMPRESSION VOLUME OF COMPRESSOR BY INCREASING STROKE BY APPLYING ALTERNATING VOLTAGE AND DIRECT VOLTAGE
APPARATUS FOR CONTROLLING OPERATION OF RECIPROCATING COMPRESSOR, AND METHOD THEREOF FOR SECURING THE MAXIMUM COMPRESSION VOLUME OF COMPRESSOR BY INCREASING STROKE BY APPLYING ALTERNATING VOLTAGE AND DIRECT VOLTAGE
PURPOSE: An apparatus for controlling operation of a reciprocating compressor, and a method thereof to secure the maximum compression volume of the compressor by increasing stroke by applying alternating and direct voltage are provided to improve the operation efficiency of a compressor. CONSTITUTION: A stroke detector(200) detects a piston stroke distance of a compressor as stroke. A comparator(300) compares the stroke output from the stroke detector with a stroke command value for outputting a difference signal. A direction voltage command value generator(100) detects temperatures of a suction port and a discharge port of the compressor as load and generates a direct voltage command value if the load corresponds to a load condition. A controller(400) controls stroke by varying an alternating voltage applied to the compressor. If receiving the direct voltage command value, the controller applies a direct voltage and an alternating voltage variable according to the load to the compressor for increasing stroke.
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