Adaptive-Hysteresis Current Controller Based Shunt Active Power Line Conditioners for Power Quality Improvements
DOI:
https://doi.org/10.37591/.v1i1-2-3.3224Abstract
This paper presents three-phase shunt active power line conditioners (APLC) for harmonics and reactive power
compensation due to non-linear loads in the distribution network. The compensation process proposed is a
sinusoidal extraction control method, which consists of positive-sequence voltage detector for regulating the
supply voltage and instantaneous reactive power (p-q) theory for fundamental extraction from the distorted line
current. The shunt active filter voltage source inverter’s switching pulses are generated through an adaptivehysteresis
current controller (HCC). The adaptive-hysteresis bandwidth can be adjusted based on compensation
current variation that is used to optimize the required switching frequency. This will improve the active power
filter performance. The shunt-APLC system is validated through extensive simulation under steady and transient
states with non-linear load conditions.
Keywords: Active power line conditioners (APLC), sinusoidal extraction controller, positive-sequence voltage
detector, p-q theory, adaptive-hysteresis current controller (HCC)
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