An efficient, cost-effective maximum power point

tracking (MPPT) algorithm is required to improve the energy

utilization efficiency of low power photovoltaic (PV) systems. This

paper presents an experimental uation of the incremental

conductance MPPT algorithm when employed by a standalone

PV pumping system, using an experimental installation comprised

of a 1080-Wp photovoltaic array connected to a 1-kW permanent

magnet dc motor-centrifugal pump set. Particular focus is given

to the uation of the two commonly utilized implementation

techniques: reference voltage perturbation and direct duty ratio

perturbation. The influence of algorithm parameters on system

behavior is investigated and the energy utilization efficiency is

calculated for different weather conditions. The performance of

the incremental conductance algorithm is compared to that of

the commonly used perturb and observe MPPT algorithm and

the various advantages and drawbacks of each technique are-An efficient, cost-effective maximum power point

tracking (MPPT) algorithm is required to improve the energy

utilization efficiency of low power photovoltaic (PV) systems. This

paper presents an experimental　uation of the incremental

conductance MPPT algorithm when employed by a standalone

PV pumping system, using an experimental installation comprised

of a 1080-Wp photovoltaic array connected to a 1-kW permanent

magnet dc motor-centrifugal pump set. Particular focus is given

to the　uation of the two commonly utilized implementation

techniques: reference voltage perturbation and direct duty ratio

perturbation. The influence of algorithm parameters on system

behavior is investigated and the energy utilization efficiency is

calculated for different weather conditions. The performance of

the incremental conductance algorithm is compared to that of

the commonly used perturb and observe MPPT algorithm and

the various advantages and drawbacks of each technique are