System for controlling starting of air conditioner and control method thereof

A system for controlling starting operation of an air conditioner, comprising:

• a compressor controlled in a pulse width modulation manner according to a duty control signal;
• an electronic expansion valve for expanding refrigerant compressed in said compressor;
• a high pressure conduit connecting the exit side of said compressor and the inlet side of said electronic expansion valve;
• a low pressure conduit connecting the exit side of said electronic expansion valve and the inlet side of said compressor;
• a bypass conduit connected at its first end to said high pressure conduit and at its second end to said low pressure conduit;
• a flow rate regulating valve mounted on said bypass conduit for regulating a flow rate of fluid flowing through said bypass conduit;
• and
• a control unit for controlling said electronic valve, said flow rate regulating valve and said compressor during a starting operation of said compressor in such a way that said electronic expansion valve is closed, said flow rate regulating valve is open and said compressor being controlled by a duty control signal having a period shorter than a period of a duty control signal for a normal operation.