Patent ID: 11952997
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H | IPC F

Claim 11:
12. The operating apparatus (104) according to claim 11 which comprises, in succession, from a connection to a power supply (11) to the electric motor (102):
a first reference system converter (12) which performs a conversion from an a-b-c system to an x-y system;
connections (13) for the injection of the voltage disturbance signal V1 which is injected in the form of the first component V1x thereof, which is injected into the first component Vpx of the supply voltage, and the second component V1y thereof which is injected into the second component Vpy of the supply voltage;
a second reference system converter (14) which performs a conversion from the a-b-c system to the x-y system so as to supply the electric motor (102) in three phases where the voltages in the phases a, b and c are derived from the conversion of a sum of the first component Vpx and the first component V1x, in the component x, and a sum of the second component Vpy and the second component V1y, in the component y;
said power supply device (103) consists of an AC/DC PWM controller;
a measuring device (16) comprising a current meter (16a) and a voltage meter (16b) adapted to be connected to the phases of the electric motor (102) and configured to detect respectively the phase currents Ia, Ib and Ic and the line-to-line voltages Vab, Vac and Vbc and to derive from these the x and y components, in DC, of the resulting current signal I2, named Ia-meas, Ib-meas and Ic-meas, and the x and y components of the resulting voltage signal V2, in DC, named Vab-meas, Vac-meas and Vbc-meas.