This paper proposes new Simplified Firefly
Algorithm (SFA) with an updated βcoefficient to maximum
power point tracking (MPPT) of photovoltaic system under
partial shading condition. The different from standard firefly
algorithm is neglected αand γcoefficients to simplify an
algorithm. The other new feature is updated βcoefficient for
each iteration step in order to achieve faster convergence.
This proposed algorithm is to obtain the optimal solution for
MPPT of PV system under three shaded conditions. The
simulation results are compared with traditional Perturbation
and Observation (PO) and standard Firefly Algorithm (FA) to
verify the proposed method performance. Highest maximum
powers and efficiencies are produced by the proposed algorithm.
The ripple in steady state condition is also better than PO and
standard FA. The main advantage of proposed algorithm is
simpler and faster convergence yet still accurate compared to