Method and system for reducing noise and for positioning of piston in a compressor during motor startup

A system for reducing noise and positioning of a piston (15) in a piston compressor during a starting failure of an electric motor (20) attached to the piston compressor consisting of at least one supply unit, one failure detection module and one actuation module, wherein the supply unit comprises at least one set of keys, the failure detection module comprises at least one data processor element and the actuation module comprises at least one control element, the system for reducing noise and positioning of piston (15) in starting failure of electric motor (20) being characterized in that:

• the supply unit is configured to selectively energize the at least one set of keys and allow the electric motor (20) to start;
• the failure detection module is configured to obtain at least one current position (S0), one most favorable position (S1) and one next position (S2) of the piston and compare the next position (S2) with the most favorable position (S1);
• the actuation module is configured to gradually reduce a voltage on the selectively energized keys of the at least one set of keys and to position the piston (15) in a new current position (S0).