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Title: Control of active front-end rectifier of the solid-state transformer with improved dynamic performance during precharging
Authors: Dehghani Tafti, Hossein
Cao, Shuyu
Ravi Kishore, Kanamarlapudi Venkata
Farivar, Ghias
Yeo, Howe Li
Sriram, Vaisambhayana Brihadeeswara
Pou, Josep
Tripathi, Anshuman
Keywords: Active Front-end Converter
Grid-connected Rectifier
Issue Date: 2017
Source: Dehghani Tafti, H., Cao, S., Ravi Kishore, K. V., Farivar, G., Yeo, H. L., Sriram, V. B., et al. (2017). Control of active front-end rectifier of the solid-state transformer with improved dynamic performance during precharging. 2017 Asian Conference on Energy, Power and Transportation Electrification (ACEPT 2017).
Abstract: The control of the active front-end rectifier of the three-stage solid-state transformer (SST) system is addressed in this paper. A comprehensive precharging sequence is introduced for the active front-end rectifier of the SST to limit the inrush current during the start-up process to its nominal current. The proposed precharging algorithm consists of two phases, passive and active precharging. The precharging resistor limits the current during the passive precharging, while a ramp increase of the voltage reference is used in the controller during the active precharging to prevent large inrush currents. Additionally, a feed-forward voltage compensator is added to the voltage reference of the controller to improve the dynamic response at the beginning of the active precharging. The proposed algorithm is detailed and simulation results on a 4-kW active front-end converter are presented to validate its performance. The simulation results under various operation conditions show the ability of the proposed algorithm to limit the converter current to its nominal value during the precharging as well as to control the dc-link voltage under different load changes.
DOI: 10.1109/ACEPT.2017.8168622
Rights: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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