Modelling of solar array and design of a vector based dual band hysterisis current control technique for a 3 phase grid connected PV system

This paper primarily focusses in discussing the design of a gridconnected PV system. The I-V V and the P-V characteristics of a PV array are observed to determine the MPP. The design of a dc-dc boost converter used as a voltage controller in the PV system is discussed. An effective control scheme for injecting the current into the grid is discussed. A conventional technique based on dual Hysteresis-band current control for variable load conditions is simulated and the results studied. This conventional control technique and is suggested to be replaced with a current control scheme in the stationary (α; β) reference frame. This method is based on space vector modulation and hysteresis-band current control where the three hysteresis band form a hysteresis hexagon.