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.