Grid-Interconnected Solar Photovoltaic System for Power Quality Improvement Using Extended Reference Signal Generation Strategy

Abstract

This research article exhibits a utility grid-interfaced solar photovoltaic (SPV) system for power quality enhancement. An adaptive proportional integral derivate (APID) controller with a unit vector template (UVT) is employed to generate a reference current signal of a shunt active power filter (APF). The UVT-based control scheme is used to separate the fundamental components from the load currents and to estimate the reference phase currents. These currents are used to generate pulse width modulation signal for the shunt APF. To maintain a constant dc link voltage of shunt APF, an APID controller is employed in the dc link voltage regulator. This extended reference signal generation scheme of shunt APF remarkably enhances the system performance and also diminishes the current and voltage harmonics in the power distribution system. The presented reference current generation scheme has been mathematically examined, and digital simulation results under different steady and dynamic states are presented. The SPV system is accomplished by utilizing the incremental conductance maximum power point technique and is interconnected with the utility grid. Finally, the entire system is validated through the real-time hardware prototype developed by using dsPIC30F4011.

Unit vector template control strategy‐based harmonic mitigation and charging with three phase–three level–three switch Vienna rectifier for Level 3 electric vehicle charging applications

“…In addition, PQ disturbances such as harmonics, total harmonic distortion (THD), short-term interruptions, voltage rise, and voltage dips may occur due to power quality problems. 8 Hence, the limitations of the battery based on parameters such as weight, end of life, state of charge, power density, storage capacity, and cost are major burdens to accept EVs. To overcome this power quality issue, a lot of controllers have been widely used by many researchers to maintain the power quality standards.…”

“…Due to these nonlinear load operations, unwanted fluctuations and imbalances occur in the grid. In addition, PQ disturbances such as harmonics, total harmonic distortion (THD), short‐term interruptions, voltage rise, and voltage dips may occur due to power quality problems 8 . Hence, the limitations of the battery based on parameters such as weight, end of life, state of charge, power density, storage capacity, and cost are major burdens to accept EVs.…”

PV Based Grid System for Power Quality Enhancement using Instantaneous P-Q Theory

“…In all modern industries, the automated controllers and energy efficient devices is used and it is very sensitive in power supply deviations also. Hence, the maintenance of power quality is very much essential based on these issues may occur in distribution network [3][4][5][6][7][8].…”