Application of Two Leg VSC as DSTATCOM for Power Quality Improvement using Star/ Delta Transformer under varying Consumer Load

Manish Srivastava, Sunil Agarwal, Ravi Kumar

Abstract


This paper presents two leg VSC as Distributed Static Compensator (DSTATCOM) for the corrections of power factor at varying consumer load. Three phase four wire system is more viable of different power quality problems. In past various methodologies were presented by the researchers to address the power quality problems, these problems are namely power factor correction (PFC), zero voltage regulation (ZVR), load balancing. These problems are taken with a reduced size and cost of D-STATCOM. A star/delta transformer based DSTATCOM is employed to handle power quality issues like reactive power correction, poor voltage regulation, compensation of neutral currents and load balancing. This paper presents a Carrier less Hysteresis Current Control techniques for proper switching of PWM. Load balancing is also achieved by the controller under different loading conditions. The Simulation studies are performed on MATLAB with Sim-Power System block set.


Keywords


Power quality, Star/ Delta transformer, Two-Leg VSC, DSTATCOM

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References


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