Izvorni znanstveni članak

https://doi.org/10.30765/er.3040

Power quality improvement in a 0.3 MW grid-connected solar PV system using incremental conductance MPPT under low insolation and temperature conditions

Akshay Narendra Deshmukh ; Research Scholar, Department of Electrical Engineering, G H Raisoni College of Engineering, Nagpur Maharashtra *
Vinod K. Chandrakar ; Department of Electrical Engineering, G H Raisoni College of Engineering, Nagpur Maharashtra

* Dopisni autor.

Sažetak

The integration of grid-connected photovoltaic (PV) systems presents critical challenges to power quality due to their weather-dependent and transient nature. Under low solar insolation and temperature fluctuations, these systems often encounter voltage instability, harmonic distortion, and reactive power imbalance, which can lead to non-compliance with standards such as IEEE 519 and CEA guidelines. This paper presents a detailed power quality analysis of a 0.3 MW grid-connected PV system simulated in PSCAD. The system employs an Incremental Conductance (IC) Maximum Power Point Tracking (MPPT) algorithm to ensure optimal power extraction under varying irradiance and temperature conditions. To replicate realistic operating environments, the PV system is subjected to dynamic resistive–inductive–capacitive (R-L-C) loads, which represent practical grid demands. Key performance indicators including voltage stability, current total harmonic distortion (THD), and reactive power fluctuations are evaluated. To mitigate these issues, LCL filters and reactive power compensation techniques are incorporated into the system model. Simulation results confirm that the IC MPPT algorithm effectively tracks the maximum power point, even at low irradiance levels, thereby improving overall energy capture. Furthermore, the integration of LCL filtering and reactive power compensation significantly reduces current THD, enhances waveform quality, and stabilizes both voltage and current profiles. The study demonstrates that with appropriate control strategies and compensation measures, grid-connected PV systems can achieve high reliability and compliance with regulatory standards, even under adverse environmental conditions. These findings reinforce the potential of PV technology for sustainable and stable grid integration.

Ključne riječi

Maximum Power Point Tracking (MPPT); grid-connected photovoltaic solar systems; gower quality; incremental conductance MPPT; PSCAD; variable irradiance; temperature variation; Total Harmonic Distortion (THD); LCL filter; power quality mitigation

Hrčak ID:

349786

URI

https://hrcak.srce.hr/349786

Datum izdavanja:

26.7.2026.

Posjeta: 0 *