Compressor control apparatus and control method
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United States of America Patent
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Nov 6, 2018
Grant Date -
Nov 23, 2017
app pub date -
Nov 2, 2015
filing date -
Oct 31, 2014
priority date (Note) -
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Abstract
A compressor control apparatus includes a rectifying unit configured to rectify power applied from the outside, a DC link unit configured to include a pair of capacitors and smooth the rectified voltage, an inverter unit configured to include a pair of switches and convert the smoothed DC voltage into a driving voltage of a motor according to a control signal, and a control unit configured to generate the control signal, wherein the control unit applies a DC offset voltage to the driving voltage according to a direction of a current applied to the motor on the basis of a result obtained by comparing voltages across the pair of capacitors.
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