Real-time harmonic elimination PWM for PV inverters, co-simulation approach

This paper deals with the study and simulation of photovoltaic (PV) inverter for stand-alone applications. The system is composed of a PV array feeding RL load through a dc-dc boost converter and three-phase inverter. To assess the system performance, simulations based on hybrid co-simulation approach are performed. At the outset, the PV model is elaborated using Pspice, verified and compared with experimental data picked up from the measurement. Two maximum power point tracker (MPPT) techniques, Perturb and observe (P&O) and Incremental Conductance (IncCond) are used to drive the boost converter in order to get the maximum power from the PV array. An innovative harmonic elimination pulse width modulation (HEPWM) technique with very high performance is used to generate the gating signals and to drive the inverter stage. Simulations are carried out and good results were obtained, in term of PV extracted power point of view as well as the AC output waveforms quality.