Control Simulation and Experimental Verification of Maximum Power Point Tracking Based on RT-LAB

The maximum power point tracking (MPPT) control in the Photovoltaic system is the key controltechnology, however present controller has the disadvantages of long development cycle, high cost andcomplex verification, and there are some disadvantages carrying out totally physical simulation ortotally digital simulation of different control algorithms. This paper carried out design of hardwarecontroller by researching different kinds of MPPT algorithms together with the improved MPPTalgorithm, then digital-analog hybrid real-time simulation was carried out based on the digital maincircuit using RT-LAB developed by Opal-RT company, effectiveness and superiority of the improvedMPPT algorithm were verified in comparison with control effects of the improved MPPT algorithmand control effects of traditional MPPT algorithms.