dSPACE real-time implementation of maximum power point tracking based on ripple correlation control (RCC) structure for photovoltaic system

In this paper, we will discuss the technique of ripple correlation control (RCC) applied to photovoltaic maximum power point tracking (MPPT). To deliver maximum power from the photovoltaic system to the load under climatic variations, and to control a boost converter, MPPT based on ripple correlation control (RCC) technique has been used. Also to improve the performance of this MPPT and to overcome the uncertainties and perturbations in the photovoltaic system, a strategy of two-layer control structure are developed to effectively handle it. The first part of the strategy use the ripple correlation control (RCC) technique, and the second part use aPI controller. This algorithm was experimentally implemented. Data acquisition and control system were implemented using dSPACE1104. The practical results show that the proposed system tracked the maximum power accurately and successfully under the change of solar irradiation.