Patent ID: 8847540

Claim:
Control system for a single-phase induction motor comprising at least one electronic control circuit ( 6 ), at least a main switch ( 3 ), at least an auxiliary switch ( 4 ), at least one voltage conditioner block ( 5 ), the main switch ( 3 ) being electrically associated to a main winding ( 21 ) of the single-phase induction motor ( 2 ), the auxiliary switch ( 4 ) being electrically associated to an auxiliary winding ( 22 ) of the single-phase induction motor ( 2 ), the electronic control circuit ( 6 ) being electrically associated to the voltage conditioner block ( 5 ) by way of first and second power terminals ( 9 , 10 ), the electronic control circuit ( 6 ) being electrically associated to the main and auxiliary switches ( 3 , 4 ) by way of first and second command terminals ( 13 , 14 ), the main and auxiliary switches ( 3 , 4 ) being turned on or off by the electronic control circuit ( 6 ), in order to energize or de-energize the main ( 21 ) and auxiliary ( 22 ) windings, the control system for a single-phase induction motor and the single-phase motor ( 2 ) being electrically associable to an alternating voltage source ( 1 ), wherein: the voltage conditioner block ( 5 ) is associated in parallel to the auxiliary switch ( 4 ) by way of first and second connection terminals ( 7 , 8 ), the voltage conditioner block ( 5 ) being capable of accumulating electrical energy when the auxiliary switch ( 4 ) is turned off, the voltage conditioner block ( 5 ) being arranged to supply electrical power greater than a minimum electrical voltage value (V min ) to the electronic control circuit ( 6 ), by way of the first and second power terminals ( 9 , 10 ), for at least one start-up time (tp), by way of energy accumulated in the voltage conditioner block ( 5 ), when the main ( 3 ) and auxiliary ( 4 ) switches are turned on.