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 تفاصيل المقالة

The main goal of this article was to compare advanced converters in plug-in hybrid electric vehicles. In this article, there are two examples of integrated chargers, the first charger integrates two DC/DC converters and uses the obtained converter in the structure of the charger, and the second charger integrates two power converters and inverters. It introduces a second integrated charger. These two chargers were simulated using valid references and compared with each other and finally the results showed that the second structure is a better structure in the car. The second structure reduced the volume, consumption, charging cost and losses by reducing the power electronic elements. This structure also had a better and higher capacity than the first structure. When it comes to getting the battery voltage to a high enough level to power the motor, the performance of the two structures was not much different, but in all other cases, the second structure performed better than its counterpart. Therefore, it is better and more economical to use this converter in rechargeable hybrid cars. تفاصيل المقالة