ELECTRICAL INSTALLATION COMPRISING AN ELECTRICAL APPARATUS, A THREE-PHASE INVERTER AND A CONTROL DEVICE FOR CONTROLLING THE INVERTER, AND RELATED METHOD

摘要

The invention concerns an electrical installation providing an apparatus, a three-phase inverter and a control device, the inverter being adapted for generating a three-phase current presenting a first frequency for operating the apparatus and an undesired frequency component presenting a second frequency. The control device is adapted for measuring a parameter of each phase of the current, the measured parameters forming a measurement vector, and for calculating a Clarke transform, providing a first vector represented in a first basis of a two-dimensional vector space, of the measurement vector. The control device is adapted for generating a representation of the first vector in a second basis of the vector space, the second basis rotating at the second frequency with respect to the first basis.

主权项

1. An electrical installation comprising:
an electrical apparatus, a three-phase inverter, and a control device, wherein
the inverter generates a three-phase electrical current and supplies an electrical apparatus with the current, the current presenting a first frequency for operating the electrical apparatus, the current also comprising an undesired frequency component presenting a second frequency, and the control device providing:a measurement module adapted for measuring a parameter of each phase of the current, the measured parameters forming a measurement vector (Vm),a first Clarke calculation module adapted for calculating a Clarke transform of the measurement vector (Vm), the Clarke transform including a first vector (V1) containing two first values (v1), the first vector (V1) being represented in a first basis of a two-dimensional vector space, anda command module for generating a control signal for controlling the inverter, the control device further providing:a first rotation module adapted for generating a second vector (V2) containing two second values (v2), the second vector (V2) being a representation of the first vector (V1) in a second basis of the vector space, the second basis rotating at the second frequency (f2) with respect to the first basis, anda first subtraction module adapted for comparing each second value (v2) to a corresponding first reference value (r1) for generating a corresponding first difference (d1), and by the command module being adapted for generating the control signal from at least the first differences (d1).