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HOU Linan,WANG Cong,ZHANG Heng,ZHANG Xiao.Principle and Simulation Analysis of Three-phase Line Voltage Cascaded VIENNA Converter[J].JOURNAL OF POWER SUPPLY,2018,16(6):99-108
Principle and Simulation Analysis of Three-phase Line Voltage Cascaded VIENNA Converter
Received:May 08, 2017  Revised:July 07, 2018
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DOI:10.13234/j.issn.2095-2805.2018.6.99
Keywords:line voltage cascaded  VIENNA converter  high-voltage high-power  active power factor correction(APFC)  control strategy  simulation
Fund Project:Project Supported by National Natural Science Fondation of China(E070602)
           
AuthorInstitutionEmail
HOU Linan School of Mechanical Electronic and Information Engineering, China University of Mining and TechnologyBeijing, Beijing , China houlinan1993@163.com
WANG Cong School of Mechanical Electronic and Information Engineering, China University of Mining and TechnologyBeijing, Beijing , China
ZHANG Heng School of Mechanical Electronic and Information Engineering, China University of Mining and TechnologyBeijing, Beijing , China
ZHANG Xiao School of Mechanical Electronic and Information Engineering, China University of Mining and TechnologyBeijing, Beijing , China
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Abstract:
      The topology of a three-phase line voltage cascaded VIENNA converter, which can complete the unit power factor rectifier under high voltage and with unidirectional transmission of energy, is proposed in this paper. This novel converter can be used as a new generation of high-frequency isolation medium-and high-voltage transformer rectifier. The working principle of this topology and the method to extend the series to a higher cascaded level are analyzed. In addition, the corresponding control strategy is put forward, and simulations are carried out. Theoretical analysis and simulation results show that under a suitable control strategy, the topology of the novel converter can achieve a very high power factor and a very low total harmonic distortion(THD); besides, it can always maintain the ba-lance and consistency of DC-side output voltage from different modules. Compared with the traditional cascaded co-nverter, the number of fully controlled devices and the value of voltage resistance decrease greatly. In this way, both the complexity and cost of the control can be reduced.
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