Abstract
In modern power systems due to prolific use of non-linear devices harmonics are present in the distribution system. To reduce the harmonics and source neutral current D-FACT along with a star-delta transformer and Power Filter is proposed in shunt. In this article, the three phase load has been taken from NTS Industries, which deals with FMCG products. This system includes 3 phase 3 wire system having industrial load such as mixer grinder, pulverizer, packaging machine, etc. A star-delta transformer along with three leg voltage source inverter and a capacitor used to filter out harmonics present in supply current. Power balance theory is used to control the D-FACT. A MATLAB Simulink model was created and the results were discussed.
Highlights
The use of non-linear devices in the domestic as well as industrial appliances has directly increase the amount of harmonics in the power supply
MATLAB Model of System Configuration Three phase AC supply is supplying three phase reactive unbalanced non-linear load, at PCC a D-FACT and star-delta transformer are connected, a single phase power filter is connected across a switch which is connected between neutral wire of source and neutral wire of star-delta transformer
Where first output waveform shows the 3-phase supply voltage, second shows the 3-phase supply current, third shows the neutral current of source, fourth shows the voltage across the capacitor of D-FACT and fifth shows the transformer neutral current
Summary
The use of non-linear devices in the domestic as well as industrial appliances has directly increase the amount of harmonics in the power supply. The problem was rectified by passive power filters in the power system with use of capacitors and inductors. This method was of least cost affect significantly the load and system impedance characteristics. Now-a-days FACTS devices took place of passive filter and possess effective compensation for reactive power, current harmonics as well as power factor correction [1-15]. The active power filter generates the desired amount of current to cancel out the harmonics present in the current. With the suitable control the D-FACT can compensate the power factor of load
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
