Reduction of harmonics by 18-pulse rectifier

摘要

Operation of such electrical devices as data processing and electronics devices, adjustable speed drives oruninterruptible power supply can cause problems by generating harmonic currents into the network, from which they aresupplied. Effects of these harmonic currents are various, they can get worse the quality of supply voltage in the network or tohave negative influences on devices connected to this network. There are various technical solutions for reduction ofharmonics. One of them is using of multi-pulse rectifiers, whereas the 18-pulse rectifier in the structure of adjustable speeddrive is briefly presented in this paper including some results of its behaviour. The examined experimental measurementsconfirmed its very good efficiency in the harmonic mitigation.