Wide-gain boost converter based on LCD cell

A wide-gain boost converter based on LCD cell is proposed in this study. The proposed topology is suitable for the fuel cells of electric vehicles that generate a specific bus voltage in power generation systems. It has none of the drawbacks of other reported LCD cell-based topologies, such as highly pulsating source current, lack of common ground, inverted load voltage polarity, and numerous switching devices. By integrating the classic boost converter with the LCD cell, the voltage gain is improved, and the features of single switch, low voltage and current stress, common ground, and continuous input current are satisfied simultaneously under the condition of using few components. Continuous input current is a desirable characteristic of DC–DC converters that is necessary for practical applications. After working principle and steady-state analyses, the salient features are compared in detail. Then, the performance of the converter and the correctness of the analysis are verified through the results of the experimental prototype.