Control method for a synchronous motor, particularly for...

Details Control method for a synchronous motor, particularly for... Control method for a synchronous motor, particularly for...

2004-06-24

2009-08-18

Ip, Paul (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Field winding circuits

C318S727000, C318S807000

Reexamination Certificate

active

07576510

ABSTRACT:
The present invention relates to a control method for a synchronous electric motor with permanent-magnet rotor, particularly for fluid circulation pumps in conditioning systems and/or household appliances, wherein the application of predetermined voltage values to each of the windings (L1, L2) of the motor is provided, by means of a converter control circuit (10). The method provides a continuous measure of the amplitude of the bus (Vr) ripple and a comparison with a reference value, for example with respect to an average bus voltage level. According to the comparison result the motor is driven by means of a variation of the winding voltage having an sinusoidal wave form.

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