| 摘要 |
A control system for a single-phase induction motor including at least: one electronic control, a main switch, an auxiliary switch, one voltage conditioner block, the main switch being electrically associated to the main winding and the auxiliary switch to the auxiliary winding, the control circuit being electrically associated to the voltage conditioner block and to the switches, the switches being turned on or off by the control circuit, the control system and the motor being electrically associable to an alternating voltage source, the conditioner block is associated in parallel to the auxiliary switch, the conditioner block being capable of accumulating energy when the auxiliary switch is turned off, the conditioner block being arranged to supply electrical power greater than a minimum value to the control circuit, for at least a start-up time, by way of the energy accumulated in the conditioner block, when the switches are turned on. |
| 主权项 |
1. 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 (Vmin) 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. |
