Active filters for harmonic mitigation are widely used in modern electrical systems and form its integral part. These devices are able to measure and correct since they work as active devices, the harmonic currents caused by non-linear loads, for instance, variable frequency drives, rectifiers, etc. They allow energy to be used more efficiently, enhance the quality of the power supplied and decrease the probability of electrical equipment’s failure. Sinotech Group provides many types of active filters performing several functions which help our customers achieve the highest efficiency of their power systems in any industry all over the globe.