Direct MPPT Control of PWM Converters for Extreme Transient PV Applications

Solar panels require of Maximum Power Point Tracking algorithms in order to ensure the amount of power extracted is maximized. The control of the power stage connected to the photovoltaic panel, and the MPPT algorithm are traditionally implemented as two independent building blocks, which derives in a relatively slow response. A novel approach is introduced in this work by embedding the MPPT algorithm into the power converter control, allowing faster dynamics, smaller reactive components and reduced switching losses. The scheme being introduced combines MPPT concepts with large-signal geometric control to achieve a high-performance, reliable solution. The theoretical analysis is supported by detailed mathematical procedures and validated by simulations and experimental results.