The model used for creating the reference voltage is shown

in Fig. 4. First, photovoltaic output current (Ipv) and output

voltage (Vpv) are passed through a first order low pass filter

with a magnitude of G = 1 and a time constant of T = 0.01

seconds in order to filter out the high frequency components

or harmonics from these signals as shown in Fig. 5 and Fig. 6.

The filtered current and voltage signals (Ipv_F and Vpv_F) are

then fed into the MPPT control block that uses the Incremental

Conductance Tracking Algorithm. An algorithm that is based

on the fact the slope of the PV array power curve shown in

Fig. 7 is zero at the Maximum Power Point (MPP), positive on

the left of the MPP, and negative on the right. The MPP can

thus be tracked by comparing the instantaneous conductance

(I/V) to the incremental conductance (∆ I/∆ V) [11] as in (1):

-The model used for creating the reference voltage is shown

in Fig.　4.　First,　photovoltaic output current (Ipv) and output

voltage (Vpv)　are passed through a first order low pass filter

with a magnitude of G = 1 and a time constant　of T = 0.01

seconds　in order to filter out the high frequency components

or harmonics from these signals as shown in Fig. 5 and Fig. 6.

The filtered current and voltage signals (Ipv_F and Vpv_F) are

then fed into the MPPT control block that uses the Incremental

Conductance Tracking Algorithm. An algorithm that　is based

on the fact　the slope of the PV array power curve shown in

Fig. 7 is zero at the Maximum Power Point (MPP), positive on

the left of the MPP, and negative on the right. The MPP can

thus be tracked by comparing the instantaneous conductance

(I/V) to the incremental conductance (∆ I/∆ V) [11] as in (1):