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ABSTRACT
A new type of Quadratic Buck–Boost Converters with Switched Inductor Network is proposed. To analyze the output voltage ripple characteristics of the Quadratic Buck–Boost Converters with Switched Inductor Network. According to the operation modes between input inductor and storage energy inductor of Quadratic Buck–Boost Converters with Switched Inductor Network, the operation modes of the converter are divided. The energy Transmission process of storage energy inductor in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) of Quadratic Buck–Boost Converters with Switched Inductor Network is analyzed. According to the comparison between the minimum current flowing through the energy storage inductor and the output current, It is proposed that the energy transmission of the energy storage inductor working in CCM is divided into complete power supply mode (CISM) and incomplete power supply mode (IISM). and The boundary inductance between CISM and IISM are obtained. Therefore, the Quadratic Buck–Boost Converters with Switched Inductor Network can be divided into CISM-CCM, IISM-CCM and DCM. The output ripple voltage of three modes is analyzed in detail, and the expression of output ripple voltage of energy storage inductor in three operating modes are deduced, respectively, and the relationship between output ripple voltage and energy storage inductor is summarized. It is concluded that the boundary inductance of CISM and IISM is the minimum inductance to minimize the output ripple voltage of the converter. Finally, the correctness of the theoretical analysis is verified by experiments.
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The author declares no conflict of interest.
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Gaozhong Zhu
Gaozhong Zhu received the BS and MS degrees in electrical engineering from Henan Polytechnic University, Jiaozuo, China in 2005 and 2008, respectively. After graduation, he worked as a teacher in School of Physics and Electrical Engineering at Weinan Normal University. Now he is an associate professor, and pursuing the PhD degree at Xi’an University of Science & Technology, Xi’an, China. His research interests include the construction, modeling and control of power converter topologies.
Shulin Liu
Shulin Liu received the BS degree from Sichuan University, Chengdu, China, in 1985, MS degree from Xi'an Microelectronics Institute and PhD degree in electrical engineering from Xi’an University of Science and Technology, Xi’an, China, in 1988 and 2007, respectively. He received Science and Technology Award 11 times. He has published six books and over one hundred technical papers in journals and conferences. His research interests include switching converters, PFC circuits, modeling and control of converters, design of integrated circuits and intrinsically safe circuits. Email: [email protected]
Bin Wang
Bin Wang is currently working toward the master's degree in the School of Electrical and Control Engineering, Xi’an University of Science and Technology. His main research interest is the intrinsically safe circuits besides the construction, modeling, and control of power converter topologies. Email: [email protected]