Abstract
This paper presents three new and improved non-isolated topologies of quadratic boost converters (QBC). Reduced voltage stress across switching devices and high voltage gain with single switch operation are the main advantages of the proposed topologies. These topologies utilize voltage multiplier cells (VMC) made of switched capacitors and switched inductors to increase the converter’s voltage gain. The analysis in continuous conduction mode is discussed in detail. The proposed converter’s voltage gain is higher than the conventional quadratic boost converter, and other recently introduced boost converters. The proposed topologies utilize only a single switch and have continuous input current and low voltage stress across switch, capacitors, and diodes, which leads to the selection of low voltage rating components. The converter’s non-ideal voltage gain is also determined by considering the parasitic capacitance and ON state resistances of switch and diodes. The efficiency analysis incorporating switching and conduction losses of the switching and passive elements is done using PLECS software (Plexim, Zurich, Switzerland). The hardware prototype of the proposed converters is developed and tested for verification.
Highlights
High gain DC-DC converters are used in several applications when high DC voltage is required
Several topologies utilize a combination of switched capacitors [2] and switched inductors to obtain high voltage
It is to be mentioned that the desirable features such as high voltage gain and low voltage stress with a reduced number of components may not always be present in all topologies
Summary
Mohammad Zaid 1 , Chang-Hua Lin 2, * , Shahrukh Khan 1 , Javed Ahmad 2 , Mohd Tariq 1, * , Arshad Mahmood 1 , Adil Sarwar 1 , Basem Alamri 3 and Ahmad Alahmadi 3.
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