Triple Line-Voltage Cascaded VIENNA Converter Applied as the Medium-Voltage AC Drive

Jia Zou, Cong Wang, Hong Cheng and Jinqi Liu
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Jia Zou: Department of Information and Electrical Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Cong Wang: Department of Information and Electrical Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Hong Cheng: Department of Information and Electrical Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Jinqi Liu: Department of Information and Electrical Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China

Energies, 2018, vol. 11, issue 5, 1-16

Abstract: A novel rectifier based on a triple line-voltage cascaded VIENNA converter (LVC-VC) was proposed. Compared to the conventional cascaded H-bridge converters, the switch voltage stress is lower, and the numbers of switches and dc capacitors are fewer under similar operating conditions in the proposed new multilevel converter. The modeling and control for the LVC-VC ware presented. Based on the analysis of the operation principle of the new converter, the power factor correction of the proposed converter was realized by employing a traditional one-cycle control strategy. The minimum average value and maximum harmonic components of the dc-link voltages of the three VIENNA rectifier modules ware calculated. Three VIENNA dc-link voltages were unbalanced under the unbalanced load conditions, so the zero sequence current was injected to the three inner currents for balancing three VIENNA dc-link voltages. Simulation and the results of the experiment verified the availability of the new proposed multilevel converter and the effectiveness of the corresponding control strategy applied.

Keywords: line voltage cascaded VIENNA converter (LVC-VC); power factor correction (PFC); one-cycle control (OCC); zero-sequence current injection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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