| 摘要 |
<p>The invention relates to a drive chain (16) comprising an electric machine (18) including a rotor (22) and a stator (20), the stator (20) being electrically connected to an alternating grid (12) and having a stator frequency, and a bidirectional system (24) for converting an alternating current into another alternating current. The conversion system (24) is connected between the grid (12) and the rotor (22), and comprises an ac/dc converter (34) connected to the network (12), and an inverter (36) connected between the ac/dc converter (34) and the rotor (22), the inverter (36) and the rotor (22) being interconnected at an intermediate point (28) for each phase of the alternating voltage. The drive chain (16) comprises a band-stop filter (26) for a target interval of between 0.6 times the stator frequency (fstator) and 1.4 times the stator frequency, said band-stop filter (26) being connected between the intermediate points (28) and attenuating the voltage at the intermediate point (28) for the frequencies of the target interval.</p> |
