Power Quality Improvement Using Left Shunt Unified Power Quality Conditioner

摘要: This paper addresses the role of Left Shunt Unified Power Quality Conditioner (UPQC-L) which is a major custom power solutions capable for load balancing, power factor correction, voltage and current harmonics mitigation in a three-phase three-wire distribution system for different combinations of linear, non-linear and dynamic loads. The unit template technique (UTT) is used to get the reference signals for series active power filter and shunt active power filter which utilizes two closed loop PI controllers. The design of threephase three-wire UPQC-L includes the design of shunt controller (SHUC) and series controller (SERC). This paper investigated the development of UPQC-L control schemes and algorithms for power quality improvement and implementation of a versatile control strategy to enhance the performance of UPQC-L. In this paper, work is done to improve the performance and cost of UPQC-L in comparison to Right Shunt Unified Power Quality Conditioner (UPQC-R) which normally gives better performance as compare to UPQC-L. The proposed control scheme gives better steady-state and dynamic response through MATLAB/Simulink based simulation results, which support the functionality of the UPQC.