Abstract
This paper presented the effect of using multiple sources of photovoltaic (PV) cells and battery on the input dc link channel of voltage source converter (VSC) for distribution STATCOM (DSTATCOM). The first high coordinated design is applied on the input of three-leg VSC for DSTATCOM to provide a continuous voltage over the time without delaying or interruption in the power through the control circuit and Dc to Dc circuit for boost of photovoltaic cell and buck-boost of battery. When there is a large of sun radiation, the generating power of PV is supplied to the three-leg VSC of DSTATCOM for power demand compensation and the surplus power is saved at the battery. In the condition of night or cloudy days the battery is discharged to maintain the sustainability of the VSC DSTATCOM. In addition, the design is used a Star / Delta transformer to isolate three-leg VSC for DSTATCOM to provide a circular path for zero sequence fundamental and then reducing harmonics the neutral current. The purpose of using DSTATCOM is to reduce the harmonics of current source, compensate the reactive currents and compensate the ground currents in the point of common coupled (PCC). The type of algorithm that used to coordinate the compensation process of DSTATCOM is a synchronous reference frame (SRF).
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