Electronic device for controlling a discharge pump driven by a synchronous electric motor with a permanent-magnet rotor
AssigneeAskoll Holding S.r.l.
InventorElio Marioni
Life of this patent
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Abstract
The present invention relates to an electronic device (10) for controlling a discharge pump, driven by a synchronous electric motor with a permanent-magnet rotor (3) and of the type comprising at least a controller (1) receiving at its input a synchronizing signal (5) of the motor supply voltage (V) and at least a second signal (7) being proportional to the current absorbed by the motor, to drive at its output a switch (6) being series-connected to one of the motor windings. Advantageously, the switch (6) is a bidirectional switch (11) comprising a diode bridge and it can be manufactured in an integrated way. In a preferred embodiment the bidirectional switch (11) is of the SCR type.
Claims6
A discharge pump, wherein the discharge pump does not require thermal protection, said discharge pump comprising:
- an electronic device for controlling the discharge pump, wherein the electronic controlling device is driven by a synchronous electric motor having a permanent-magnet rotor,
- at least a controller receiving at its input a synchronizing signal of the motor supply voltage (V);
- and
- a bidirectional switch series-connected to one of the motor windings driven by at least a second signal proportional to the current absorbed by the motor.
Dependencies are inferred from the claim text.