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http://dx.doi.org/10.6113/JPE.2018.18.4.1015

Family of Dual-Input Dual-Buck Inverters Based on Dual-Input Switching Cells  

Yang, Fan (College of Automation Engineering, Nanjing University of Aeronautics and Astronautics)
Ge, Hongjuan (College of Automation Engineering, Nanjing University of Aeronautics and Astronautics)
Yang, Jingfan (College of Automation Engineering, Nanjing University of Aeronautics and Astronautics)
Dang, Runyun (College of Automation Engineering, Nanjing University of Aeronautics and Astronautics)
Wu, Hongfei (College of Automation Engineering, Nanjing University of Aeronautics and Astronautics)
Publication Information
Journal of Power Electronics / v.18, no.4, 2018 , pp. 1015-1026 More about this Journal
Abstract
A family of dual-DC-input (DI) dual-buck inverters (DBIs) is proposed by employing a DI switching cell as the input of traditional DBIs. Three power ports, i.e. a low voltage DC input port, a high voltage DC input port and an AC output port, are provided by the proposed DI-DBIs. A low voltage DC source, whose voltage is lower than the peak amplitude of the AC side voltage, can be directly connected to the DI-DBI. This supplies power to the AC side in single-stage power conversion. When compared with traditional DBI-based two-stage DC/AC power systems, the conversion stages are reduced, and the power rating and power losses of the front-end Boost converter of the DI-DBI are reduced. In addition, five voltage-levels are generated with the help of the two DC input ports, which is a benefit in terms of reducing the voltage stresses and switching losses of switches. The topology derivation method, operation principles, modulation strategy and characteristics of the proposed inverter are analyzed in-depth. Experimental results are provided to verify the effectiveness and feasibility of the proposed DI-DBIs.
Keywords
Circuit topology; Dual-Buck; Dual-input; High efficiency; Inverter;
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Times Cited By KSCI : 5  (Citation Analysis)
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