Fig. 1. Grid-connected PV system configuration.
Fig. 2. A flowchart of the whole range power point tracking.
Fig. 3. A CPG algorithm block of the Left-CPG method.
Fig. 4. A P-V curve of the Left-CPG method.
Fig. 5. A CPG algorithm block of the IncCond-CPG method.
Fig. 6. A P-V curve of the IncCond-CPG method.
Fig. 7. A flowchart of the whole range power point tracking with proposed CPG method.
Fig. 8. Hardware set-up for experimental test.
Fig. 9. PV power conditioning system(PCS) of 4 kW.
Fig. 10. Experiment results of the Left-CPG method at grid-connection: (a) on the P-V curve and (b) in time.
Fig. 11. Experiment results of the IncCond-CPG method at grid-connection: (a) on the P-V curve and (b) in time.
Fig. 12. Experiment results of the Left-CPG method with irradiation decrease: (a) on the P-V curve and (b) in time.
Fig. 13. Experiment results of the IncCond-CPG method with irradiation decrease: (a) on the P-V curve and (b) in time.
Fig. 14. Experiment results of the Left-CPG method with irradiation increase: (a) on the P-V curve and (b) in time.
Fig. 15. Experiment results of the IncCond-CPG method with irradiation increase: (a) on the P-V curve and (b) in time.
Fig. 16. Experiment results of the Left-CPG method in a given situation.
Fig. 17. Experiment results of the IncCond-CPG method in a given situation.
Fig. 18. Experiment results of the proposed CPG method in a given situation.
TABLE I PARAMETERS OF PV ARRAY
TABLE II PARAMETERS OF THE PV SYSTEM
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