Optimal switching sequence based control of a differential-mode inverter

Power electronic systems are gaining widespread importance in contemporary world due to the extensive integration of renewable energy resources into grid. As a consequence of grid integration of renewable energy sources, developing robust control methods for inverters have gained paramount importance, since the control scheme that we apply plays an important role in ensuring stability and good performance of the inverters. Taking this into account, we have designed an optimal switching sequence based controller (OSBC) which ensures stability and robustness of a differential-mode inverter (DMI), which is based on Ćuk topology. The controller, so designed, responded well to large signal perturbations under varying operating conditions. The control scheme developed provides good steady state and transient response. The control leads to the rapid convergence of the input inductor current to its reference resulting in fast convergence of the output voltage to its reference ass well.