Current and Voltage Harmonic Distortion Minimization in Nonlinear Loads

Nonlinear loads are always needed to operate electrical equipment. Example, motor drives, inverters, rectifiers, etc. However nonlinear loads can create electrical power quality problems such as harmonic. Harmonics has two sources, voltage source and current source. To reduce voltage harmonic distortion, a shunt passive filter can be used. Meanwhile, to reduce harmonic current distortion can use a series passive filter. What if there is harmonic case that has voltage and current source, a combination of series and shunt passive filters is needed. There are two types of passive filters, namely single tuned shunts and C-type passive filters. The first model uses combination of series and shunt single tuned passive filter. Next this combination is called HPF1. The second model uses combination of series and C-type passive filters. Next this combination is called HPF2. The third model uses Harmonic Power Sharing (HPS). Then all of these combinations are tried in case studies. The results of the experiment are that HPF2 has the best results of all models in reducing THD and IHD-V, but HPF1 has the best results than all models in reducing TDD and IHD-I. Although the TDD values are not too much different.