A Superlative Closed-Loop Controlled High-Voltage Gain DC-DC Converter for EV-BESS Charger Fed Induction Motor Drive

Electrical & Electronics Engineering

Efficient, cost-effective, and simple structure of battery charging for EV system by utilizing suitable power conditioning stages with assisted knowledge of control scheme. Based on the summarized merits & demerits of conventional boost DC-DC converters, a single-switch high voltage gain converter is greatly suitable for EV-charging system due to high voltage gain, low switch stress, low current ripples, low EMI issues, and low complex design. The voltage 22V coming from the solar-PV system is converted into 51V by using proposed modified boost converter with a moderate duty cycle of 48% which reduces the switching losses and maximizing the efficiency. The main objective of this work is proposing a novel single switch high step-up DC-DC converter for EV charging system powered by solar-PV system. The DC-link voltage at load terminals is affected due to sudden switching of other loads which impacts the entire stability of the system. To overcome these issues, a closed-loop controlling of modified boost converter has been proposed for enhancing system performance under sudden load variations. The well-recognition of proposed scheme is validated under constant and variable DC-link voltage conditions by using closed-loop PI controller which is demonstrated through Matlab/Simulink tool and results are conferred with proper comparisons.

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