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A fast-converging MPPT technique for photovoltaic system under fast-varying solar irradiation and load resistance

Category : Power Electronics


Sub Category : DC TO DC CONVERTERS (CHOPPERS)


Project Code : ITPW08


Project Abstract

Under fast-varying solar irradiation and load resistance, a fast-converging maximum power point tracking (MPPT) system is required to ensure the photovoltaic (PV) system response rapidly with minimum power losses. Traditionally, maximum power point (MPP) locus was used to provide such a fast response. However, the algorithm requires extra control loop or intermittent disconnection of the PV module. Hence, this paper proposes a simpler fast-converging MPPT technique, which excludes the extra control loop and intermittent disconnection. In the proposed algorithm, the relationship between the load line and the IV curve is used with trigonometry rule to obtain the fast response. Results of the simulation and experiment using single ended primary-inductor converter showed that the response of the proposed algorithm is four times faster than the conventional incremental conductance algorithm during the load and solar Irradiation variation. Consequently, the proposed algorithm has higher efficiency.

EXISTING SYSTEM

PROPOSED SYSTEM

It requires intermittent connection

It doesn’t require intermittent connection

It requires extra control loop

It doesnot requires control loop

Fixed step size algorithm can be used

Variable step size algorithm can be used.

 
 
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