ABSTRACT:
Electrical and electronic devices when exposed to
one or more power quality problems are prone to failure. This paper aims to
enhance the quality of power in three-phase four-wire distribution grid using
Fuel Cell Integrated Unified Power Quality Conditioner (FCI-UPQC). The proposed
FCI-UPQC has four-leg converter on the shunt side and three-leg converter on
the series side. A combination of a synchronous reference frame (SRF) and
Instantaneous Reactive Power (IRP) theories are utilized to generate reference
signals of the FCI-UPQC. Also, this paper proposes Adaptive Neuro-Fuzzy Inference
System controller to maintain DC link voltage in the FCI-UPQC. The Adaptive
Neuro-Fuzzy Inference System controller is designed like a sugeno fuzzy
architecture and trained offline using data from the Proportional Integral (PI)
controller. The obtained results proved that the proposed FCI-UPQC compensated
power quality problems such as voltage sag, swell, harmonics, neutral current,
source current imbalance in three-phase four-wire distribution grid. The
presence of fuel cell in this work makes more effectiveness of the proposed
system by providing real power support during supply interruption on the grid
side.
SOFTWARE:
MATLAB/SIMULINK
CONCLUSION:
In
this paper, a novel utility of FCI-UPQC as a compensating and interconnecting
device for a 3-phase 4- wire distribution grid is extensively simulated in Matlab/Simulink.
It was observed that the proposed FCIUPQC efficiently compensates the problem
of load current and supply voltage imperfections with quick response and high reliability
at the same time. The proposed system has an enhanced performance under
unbalanced, non-linear and sensitive linear load conditions. It is important to
note that the proposed system still having challenge to mitigate source current
harmonics during source side disturbances and the type-2 ANFIS controlled
FCI-UPQC is the another scope for the future work.
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