| 摘要 |
The invention concerns an inverter or an output filter for inverters. The output current of an inverter for higher levels of power generally has a whole series of current harmonics. Those harmonics are troublesome and they occur in an unacceptable fashion in particular when a relatively high level of power has to be fed into a network by way of inverters. Therefore the object of the invention is to eliminate the above-mentioned disadvantages, so that only current with very low and if possible no harmonics at all is still fed into the public supply network. The invention further seeks to provide that the dc voltage intermediate circuit of the inverter is stabilised in respect of electrical potential (voltage value in relation to the housing, earth or the three-phase system). 1. An inverter for producing an alternating or three-phase current from a dc voltage comprising - a dc voltage intermediate circuit and - on the output side an output choke (L A), - wherein harmonics occurring on the output side are coupled into the dc voltage intermediate circuit. |
