Fig 1.
Power characteristic curve under varying irridiance.
Fig 2.
Power characteristic curve under varying temperature.
Fig 3.
Single diode model of PV module.
Fig 4.
Circuit diagram of non-inverted buck boost converter.
Fig 5.
Switch ON mode of the non-inverted buck-boost converter.
Fig 6.
Circuit diagram of non-inverted buck boost converter.
Fig 7.
Neural network for Vref generation.
Fig 8.
Vref for different values of irradiance and temperature.
Fig 9.
Mean square error convergence during the NN estimation.
Fig 10.
The regression plots during the estimation of Vref.
Fig 11.
The error histogram during the estimation of Vref.
Fig 12.
Proposed control scheme for PV power system.
Table 1.
PV array parameters and buck-boost converter specification.
Table 2.
Controller parameters.
Fig 13.
Tracking of Vpv with respect to Vref under varying irradiance.
Fig 14.
PV array power under varying irradiance.
Fig 15.
Tracking of Vpv with respect to Vref under varying temperature.
Fig 16.
PV array power under varying temperature.
Fig 17.
Tracking of Vpv with respect to Vref under simultaneous variation in temperature and irradiance.
Fig 18.
Comparison of PV array voltage under varying irradiance.
Fig 19.
Comparison of PV array output power under varying irradiance.
Fig 20.
Comparison of PV array voltage under varying temperature.
Fig 21.
Comparison of PV array output power under varying temperature.
Fig 22.
Comparison of PV array voltage under simultaneous variation in temperature and irradiance.