ROTATING ELECTRICAL MACHINE HAVING EXCITATION AND A DIGITAL REGULATION DEVICE

摘要

The machine of the invention is capable of functioning as a generator and outputs a continuous output voltage (Ub+) that is adjustable by an excitation current. The digital regulator (2) of the machine comprises an excitation current control means (7) and a control loop (6) that includes a means (10) for measurement, by sampling, of the output voltage (Ub+), said measurement means generating a signal sampled at a predetermined first sampling frequency (F1 e). The machine has a bandwidth that is limited by a predetermined first cutoff frequency (F1 c). In accordance with the invention, the measurement means includes a means for oversampling such that the first sampling frequency (F1 e) is greater than twice the first cutoff frequency (F1 c), and the control loop also includes a means (12) for decimating the sampled signal.