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ZHU Longji, WU Zhonglan, ZHENG Changlu. Research on parallel interleaved DC/DC converter applied to mine electric locomotive[J]. Journal of Mine Automation, 2019, 45(6): 63-68. DOI: 10.13272/j.issn.1671-251x.2019010089
Citation: ZHU Longji, WU Zhonglan, ZHENG Changlu. Research on parallel interleaved DC/DC converter applied to mine electric locomotive[J]. Journal of Mine Automation, 2019, 45(6): 63-68. DOI: 10.13272/j.issn.1671-251x.2019010089
shu

Research on parallel interleaved DC/DC converter applied to mine electric locomotive

  • 1.

    School of Electrical and Information Engineering， Anhui University of Science and Technology，Huainan 232001, China

  • 2.

    Shanghai SH-Driver Electric Co., Ltd., Shanghai 200072, China

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  • In view of problems of low conversion efficiency, easy damage of switching devices and inapplicable to super capacitors of non-isolated converters currently used in mine electric locomotive, a parallel interleaved DC/DC converter applied to mine electric locomotive was introduced. At the low voltage side, a parallel interleaving structure is proposed to charge the capacitor and reduce current ripple; At the high voltage side, two capacitors are connected in series by adding a switch tube to increase buck-boost gain. Working process of the converter under boost drive mode and buck charging mode are described. The voltage/current double closed-loop step-up and constant current limit charging controller are designed. The experimental results show that the parallel interleaved DC/DC converter can effectively improve the performance of the electric locomotive in DC conversion.
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