University of Cagliari
A Novel DC-link Voltage and Current Control Algorithm for Neutral-Point-Clamped Converters
PORRU, MARIO;SERPI, ALESSANDRO;MARONGIU, IGNAZIO;DAMIANO, ALFONSO
2014-01-01
Abstract
A novel DC-link voltage and current control algorithm for Three-Level Neutral-Point-Clamped converters (NPCs) is proposed in this paper. It is developed with the aim of sharing the overall DC-link voltage among DC-link capacitors as needed, without impairing NPC load performances. The proposed algorithm consists of an external DC-link voltage control loop, which synthesizes an appropriate reference DC-link current profile on the basis of the reference DC-link voltages. Such a current profile is then tracked by means of an inner DC-link current control system. This last synthesizes the most suitable PWM pattern for DC-link voltage regulation, prioritizing NPC load requirements at the same time. The effectiveness of the proposed DC-link voltage and current control algorithm is verified through extensive simulations, which refer to the case study of a three-phase NPC that feeds a Surface-Mounted Permanent Magnet Synchronous Machine.
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| P45#2014#IECON2014#NPC#IEEE_Paper.pdf Solo gestori archivio
Description: A Novel DC-link Voltage and Current Control Algorithm for Neutral-Point-Clamped Converters
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| P45#2014#IECON2014#NPC#PostPrint.pdf Solo gestori archivio
Description: A Novel DC-link Voltage and Current Control Algorithm for Neutral-Point-Clamped Converters (Post Print)
Type: versione post-print
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1.29 MB | Adobe PDF | & nbsp; View / Open Request a copy |
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