Abstract
In recent years, several harmonic problems have been occurred in distribution system by load current harmonics of many smart machines with power electronics technology. Installing LC filters on power systems is conventional technology of reducing voltage distortion. And also, active filter is usually installed on power systems because of the same purpose. However, it is difficult to adjust the parameters of those systems for any kind of power systems, because of a variety of power system configurations. For the above mentioned problem, we have developed a new system which reduce voltages and currents distortion by using synchronous machine. It is named Harmonics Compensating Synchronous Machine. The Harmonics Compensating Synchronous Machine has been studied by the authors, and was confirmed compensating power system 5th and 7th harmonics by using 6kVA trial model. This paper describes the performances of developed 100kVA new machine and its control system using 3.3kV AC transmission line model. Further more this paper also describes field study results of the system installed in an actual 10MVA-distribution substation.
