Patent ID: 7378814
Filing Date: 2008-05-27
Classification: H02P

Abstract:
1. Method for the control of a wound rotor synchronous motor, comprising measuring a plurality of electromagnetic entities indicative of the operation of said motor, generating voltage on a stator of said motor for obtaining a stator current, further generating further voltage on said rotor to obtain a rotor current, before said generating and said further generating, processing said entities to calculate references for said stator current and for said rotor current, said references corresponding to the generation by said motor of the maximum torque obtainable per ampere of stator current supplied, that the method further comprises calculating a value of the rotor current and values of the components of the stator current corresponding to unity power factor operation condition of said motor for an assigned amplitude of the stator current and for a maximum stator voltage value applicable to the motor, comparing said value of the rotor current with a preset maximum rotor current value and, if said value of the rotor current is less than said preset maximum rotor current value, setting a reference of the rotor current equal to said value of the rotor current and setting references of the stator current components equal to said values of the components of the stator current.