Implementation of the digital control algorithm for the maximum power point tracking DC module

The distributed maximum power point tracking (DMPPT) has become one of the most attractive structures of photovoltaic (PV) generation system recently. In this improved structure, the maximum power point tracking (MPPT) DC module is one of the most important components, which provides not only the better utilization of PV sources, but also many supplementary features on the reliability and safety. As more and more functions are put together into this MPPT DC module, the digital controller design gives the flexibility to reduce the complexity. Therefore, this paper discusses the implementing issues about the digital control algorithm for the MPPT DC module from the computational viewpoint. With the improved modifications, the computation time of the overall algorithm is reduced, and the discussed algorithm can thus be implemented in a tailor-made digital control core as a result.