• R.SANGEETHA
• B.BANUPRIYA
• S.NIRMALRAJAN

The application of nonlinear loads may cause distribution system power quality issues to utilize DG unit interfacing converters to actively compensate harmonics, an hysteresis current control approach is used, which seamlessly integrates system harmonic mitigation capabilities with the primary DG power generation function. As the hysteresis current controller has to independently control fundamental and harmonic DG currents, local nonlinear load harmonic current detection and distribution system harmonic voltage detection are not necessary for the proposed harmonic compensation method. Moreover, a closed-loop control scheme is employed to directly derive the fundamental current reference with hysteresis current control technique. The proposed power control scheme effectively eliminates the impacts of steady-state fundamental current tracking errors in the DG units. Thus, the single-phase active filter control for testing the command and control strategy was used a single-phase voltage source inverter (full bridge) and the harmonic compensation functions are activated. In addition, this paper also briefly discusses the performance of the proposed method when DG unit is connected to a grid with frequency deviation. Simulated results from a single-phase DG unit validate the correctness of the proposed methods using MATLAB/Simulink.

Distributed generation, hysteresis control, active filter, harmonic compensation, voltage source inverter

"Active Harmonic and Hysteresis Mitigation in Grid-Connected DG Units with H Infinity Controller", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.1, Issue 6, page no.513-520, November-2014, Available :http://www.jetir.org/papers/JETIR1406027.pdf

"Active Harmonic and Hysteresis Mitigation in Grid-Connected DG Units with H Infinity Controller", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.1, Issue 6, page no. pp513-520, November-2014, Available at : http://www.jetir.org/papers/JETIR1406027.pdf