Essay about Photovoltaic: Switched-mode Power Supply and Boost Ripping tools

Photovoltaic: Switched-mode Power Supply and Boost Converter

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IEEE VENTURES ON ELECTRICITY ELECTRONICS, VOLUME. 29, NO . 11, NOV 2014

A Novel Soft-Switching Boost Convsersion app With

Magnetically Coupled Resonant Snubber

Tianwen Zhan, Yingchao Zhang, Jintong Nie, Yongchang Zhang, Affiliate, IEEE, and Zhengming Zhao, Senior Member, IEEE

Abstract—A novel soft-switching boost converter with a magnetically coupled resonant snubber is presented through this paper. The passive snubber circuit, which can be composed of two diodes, two capacitors, and one coupled inductor, ensures a actually zero current turn-on and actually zero voltage turn-off conditions to get the power change, and reduces the reverse-recovery problem intended for the output diode. Moreover, with the proper type of the snubber circuit, the power switch and output diode can be softly switched within a wide load range. The operating basic principle and performance evaluation of the proposed converter will be described in detail. The research from a 400 W prototype have been carried out and the results present that the recommended converter has the advantages of straightforward structure, low complexity control, and the top efficiency is more than 95%.

Index Terms—Boost converter, paired inductor, passive lossless snubber, soft-switching.

We. INTRODUCTION

THIS INDIVIDUAL pulse thickness modulation improve converter is usually widely utilized in the fields of dc–dc conversion and power component correction. In recent times, the increase converter within the ongoing conduction setting (CCM), is the most popular topology in high-power applications just like hybrid electric vehicles [1], fuel cell electricity conversion systems [2], and photo voltaic power technology [3], [4]. High power density, excessive efficiency, and low electromagnetic interference (EMI) are main concerns in CCM increase converters. However , the traditional hard-switching boost convsersion app has

a number of inherent disadvantages such as the switching losses and the reverse-recovery problem of the output diode. These types of drawbacks limit the turning frequency; reduce the conversion efficiency

T

Manuscript received September 5, 2013; revised August 30, 2013; accepted December 7, 2013. Date of publication January 2, 2014; date of current type July eight, 2014. This work was supported simply by the Nationwide Natural Science Foundation of China under Scholarships 51207003 and 51347004, and part by Chongqing All-natural Science Groundwork Grant cstc2012jjB107. Recommended for publication by Associate Publisher P. C. -K. Luk. T. Zhan, Y. Zhang, and T. Nie are with the Important Laboratory of Special Power of PLA, Chongqing Conversation Institute, Chongqing 400035, China and tiawan (e-mail: [email protected] com; [email protected] org. cn; [email protected] com).

Y. Zhang is with the Power Electronics and Motor Drive Engineering Study Center, North China University of Technology, Beijing 100144, China (e-mail: [email protected] com).

Z. Zhao is with the State Key Laboratory of Electrical power Systems, Department of Electric powered Engineering, Tsinghua University, Beijing 100084, Cina (e-mail: [email protected] tsinghua. edu. cn).

Color versions of one or more from the п¬Ѓgures through this paper are available online in http://ieeexplore.ieee.org.

Digital Object Identifier 10. 1109/TPEL. 2013. 2295887

and create high EMI. To conquer these challenges, many extra circuits and snubbers have already been proposed. Many softswitching increase converters with an additional switch and passive pieces have been proposed [3], [5]–[17], but these have one or a number of the following downsides:

1) A few converters reduce the EMI pertaining to the output diode but

the general efficiency is definitely reduced [5].

2) An additional switch operating with hard turn-off condition is added, which will lead to complex control and the nonnegligible switching lack of the auxiliary switch [6], [7]. 3) The volts and current stress on either the main switch

or the auxiliary change are aggravated as well as the failures of the passive components [8]–[11].

4) The additional switch takes a floating gate drive [3], [12]–[15] and the additional circuit is composed...

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