FAST-CONVERGING MPPT TECHNIQUE FOR PHOTOVOLTAIC SYSTEM
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 article presents a simpler fast-converging MPPT technique, which excludes the extra control loop and intermittent disconnection.
In the MPPT algorithm, the relationship
between the load line and the I–V curve is used with trigonometry
rule to obtain the fast response.
This algorithm is four times faster than the conventional incremental
conductance algorithm during the load and solar Irradiation variation.
Consequently, this algorithm has higher efficiency.
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