This paper deals with the modified kernel least mean square (KLMS) control strategy in double-stage, solar photovoltaic (PV) grid tied system to enhance the power quality at common coupling point (CCP). This proposed control algorithm has less oscillations, fast convergence, fast dynamic response and good steady state performance. A control strategy is used to extract the fundamental active current component of load and generates reference grid current for a DC-AC converter. The proposed modified KLMS control mitigates multiple power quality concerns such as harmonics reduction, unity power factor and load balancing. The dynamic performance of proposed system is confirmed into the MATLAB\Simulink environment. Test results on hardware implementation are presented at varying solar irradiation levels and load unbalancing. Test results are found satisfactory and total harmonic distortion (THD) of the grid currents are observed well within the IEEE-519 standard.

1. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
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Multifunctional Grid-Tied PV System Using Modified
KLMS Control
ABSTRACT:
This paper deals with the modified kernel least mean square (KLMS) control strategy in double-
stage, solar photovoltaic (PV) grid tied system to enhance the power quality at common coupling
point (CCP). This proposed control algorithm has less oscillations, fast convergence, fast
dynamic response and good steady state performance. A control strategy is used to extract the
fundamental active current component of load and generates reference grid current for a DC-AC
converter. The proposed modified KLMS control mitigates multiple power quality concerns such
as harmonics reduction, unity power factor and load balancing. The dynamic performance of
proposed system is confirmed into the MATLABSimulink environment. Test results on
hardware implementation are presented at varying solar irradiation levels and load unbalancing.
Test results are found satisfactory and total harmonic distortion (THD) of the grid currents are
observed well within the IEEE-519 standard.
KEYWORDS:
1. Solar PV Generation
2. Voltage Source Converter (VSC)
3. Distributed Network
4. Power Quality
SOFTWARE: MATLAB/SIMULINK
CONCLUSION:
The proposed modified KLMS based control scheme for double stage solar PV system, has been
simulated in MATLABSimulink environment and simulated results are validated through the

2. ELECTRICAL PROJECTS USING MATLAB/SIMULINK
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0-9347143789/9949240245
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0-9347143789/9949240245
experimental prototype. The MPPT has extricated the peak power point successfully (nearly
100%) from the solar PV array under varying insolation levels. The proposed control effectively
provides harmonics compensation, grid currents balancing and unity power factor in the grid tied
system. This proposed modified KLMS control scheme has extracted the fundamental current
component efficiently. Under the load unbalancing condition, the fundamental current
component has shown faster convergence and less oscillations than LMS and LMF controls.
Moreover, it has good steady state and dynamic performances than LMS and LMF controls.
Moreover, the THD of grid currents, is meeting the IEEE-519 standard[12].
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