In the present work, an improved buck-boost converter with the possibility of flexible design is introduced to gain required voltage and easily adapt to any wide-range-gain application. Switched-coupled-inductors are employed as the key in this converter to achieve the wide-range-gain buck-boost operation through adjusting their turn ratio. The set of coupled-inductors are integrated with the conventional ZETA converter to be used in place of buck-boost cell of its original circuit, which relies on ZETA converter. This converter increased the voltage gain degree of freedom to design a wide-range gain operation for any required application. In comparison with the conventional competitors, the proposed converter is required to use smaller passive components with lower voltage and current ratings for its semiconductors. All these features and claims are investigated theoretically and then, are evaluated experimentally by implementing a test rig with the rated power of 200W پرونده مقاله

This research focuses on an active switch non-isolated buck-boost DC/DC converter based on CUK topology. The suggested converter uses a simpler circuit topology to enable the acquisition of higher voltage gain at lower duty cycle levels. In addition, a continuous input/output current with negative output polarity is displayed by this converter. Compared with the conventional buck-boost converter, the suggested converter can obtain a wider range of the voltage conversion ratio with the same duty cycle. The principles and prominent waveforms of Continuous Conduction Mode (CCM) are explained in this work. The efficiency was examined by substituting parasitic resistance effects for steady-state conditions. The current investigation includes a thorough analysis of parameter design, power loss computation, properties, and a comparative analysis with other non-isolated converters. Finally, a working hardware prototype with a 48-watt power output is created, and the practicality of the proposed converter is confirmed by the empirical data gathered from testing.

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