Harmonic current compensator composed of static power converter

A new harmonic current compensator composed of a static power converter was developed. It is composed of two voltage-type inverters in a multiplex configuration, this new compensator has a number of features that make it superior to the conventional passive filter composed of an AC reactor and a capacitor. This paper describes the principle of harmonic current compensation, the capability which the converter is required to have as compensator, the compensator´s features and a trial production equipment. The important factor which are essential to a compensator, such as main circuit configuration, components, control circuit, control technique, etc. were discussed. Also the test results of a compensation characteristic were presented. Excellent characteristics of the new harmonic current compensator were verified through an experiment.