Paper title: POWER QUALITY IMPROVEMENT USING THREE-LEVEL NEURAL POINT CLAMPED UNIVERSAL CONDITIONER FOR ALL VOLTAGE DISTURBANCES COMPENSATION
Author(s): SALIM CHENNAI,
Abstract: This paper proposes an efficient control scheme for unified power quality conditioner (UPQC) system based on three-level
neutral point clamped (NPC) inverter capable to compensate all voltage disturbances. The proposed UPQC is designed by the
integration of series and shunt active power filters (APFs) sharing a common dc bus capacitor. The dc voltage is maintained
constant using proportional integral (PI) voltage controller. To get the reference signals for shunt and series APFs, synchronous
reference frame (SRF) and instantaneous reactive power (PQ) strategies are adopted. These reference signals are derived from
the control algorithm and injected in PWM controllers to generate the switching signals. The performance of proposed UPQC
system is evaluated using MATLAB-Simulink software and SimPowerSystem Toolbox for all voltage disturbances
compensation. The simulation results demonstrate that the proposed UPQC system can improve the power quality at the
common connection point of the non-linear load.
Keywords: Unified power quality conditioner (UPQC), Three-level inverter, Voltage disturbance compensation, Synchronous
reference frame strategies, Instantaneous reactive power strategies Year: 2016 | Tome: 61 | Issue: 2 | Pp.: 188-193
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