Design and analysis of a proposed transformerless/non-isolated high-‎gain DC-DC converter for renewable energy applications

Waly, Hussein M.; Osheba, Dina S. M.; Azazi, Haitham Z.; El-Sabbe, Awad E.

doi:10.1080/00207217.2019.1710864

Cited by 17 publications

(2 citation statements)

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“…The design of inductors is based on the value of current ripples (∆i L ), and is considered between 5-10% of the nominal output current to achieve optimal inductor size [20]. Therefore, the inductances can be calculated as:…”

Section: Design Of Inductors and Capacitorsmentioning

confidence: 99%

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Design and Performance Evaluation of a Step-Up DC–DC Converter with Dual Loop Controllers for Two Stages Grid Connected PV Inverter

et al. 2022

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In this work, a non-isolated DC–DC converter is presented that combines a voltage doubler circuit and switch inductor cell with the single ended primary inductor converter to achieve a high voltage gain at a low duty cycle and with reduced component count. The converter utilizes a single switch that makes its control very simple. The voltage stress across the semiconductor components is less than the output voltage, which makes it possible to use the diodes with reduced voltage rating and a switch with low turn-on resistance. In particular, performance principle of the proposed converter along with the steady state analysis such as voltage gain, voltage stress on semiconductor components, and design of inductors and capacitors, etc., are carried out and discussed in detail. Moreover, to regulate a constant voltage at a DC-link capacitor, back propagation algorithm-based adaptive control schemes are designed. These adaptive schemes enhance the system performance by dynamically updating the control law parameters in case of PV intermittency. Furthermore, a proportional resonant controller based on Naslin polynomial method is designed for the current control loop. The method describes a systematic procedure to calculate proportional gain, resonant gain, and all the coefficients for the resonant path. Finally, the proposed system is simulated in MATLAB and Simulink software to validate the analytical and theoretical concepts along with the efficacy of the proposed model.

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Section: Design Of Inductors and Capacitorsmentioning

confidence: 99%

“…where i O is the output current of the converter. The capacitors (C 1 and C 2 ) are designed by using the voltage ripples (∆U C ), which are assumed to be 5-10% of the output or DC-link voltage of the capacitor [20]. Hence, the capacitances can be calculated as,…”

Section: Design Of Inductors and Capacitorsmentioning

confidence: 99%