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Abstract
This paper presents a midpoint voltage balancer (MVB) which provides neutral point voltage stabilization to three-phase four-wire converters. The MVB consists of dual switching legs, two neutral inductors, and two split capacitors. A sensorless approach with open-loop control is adopted. It removes current/voltage sensors and alleviates computational demand. It is a cost effective and robust alternative to the closed-loop MVB. Due to the zero-crossing of the neutral inductor current, all switches of the MVB operates in zero-voltage switching mode when neutral current is smaller than the nominal phase current of the three-phase four-wire converter. Interleaving operation of the MVB minimizes the high-frequency current circulation in the split capacitors. In addition, the two neutral inductors are magnetically coupled to decrease the inductor current ripple. As a result, the size of passive components of the MVB is reduced. The proposed sensorless approach is verified by a 20 kVA prototype.
Original language | English |
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Title of host publication | 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe) |
Publisher | Institute of Electrical and Electronics Engineers |
Number of pages | 10 |
ISBN (Electronic) | 978-9-0758-1536-8 |
DOIs | |
Publication status | Published - Sept 2020 |
Event | 22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe - https://epe-ecce-conferences.com/epe2020/, Lyon, France Duration: 7 Sept 2020 → 11 Sept 2020 https://epe-ecce-conferences.com/epe2020 |
Conference
Conference | 22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe |
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Abbreviated title | EPE'20 ECCE Europe |
Country/Territory | France |
City | Lyon |
Period | 7/09/20 → 11/09/20 |
Internet address |
Funding
This work has been conducted within HiPERFORM project, which has received funding from the ECSEL Joint Undertaking (JU) under Grant Agreement No. 783174. The JU receives support from the European Union’s Horizon 2020 research and innovation program and Austria, Spain, Belgium, Germany, Slovakia, Italy, Netherlands, Slovenia.
Funders | Funder number |
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European Union's Horizon 2020 - Research and Innovation Framework Programme | 783174 |
Electronic Components and Systems for European Leadership |
Keywords
- Converter circuit
- Interleaved converters
- Midpoint voltage balancer
- Sensorless control
- Three-phase system
Fingerprint
Dive into the research topics of 'Sensorless Neutral Point Voltage Stabilization in Three-Phase Four-Wire Converters'. Together they form a unique fingerprint.Projects
- 1 Finished
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HiPERFORM
Duarte, J. L. (Project Manager), Lomonova, E. A. (Project Manager), Thirion, W. P. F. (Project member), van der Hagen, D. (Project communication officer), Xu, X. (Project member) & Tibola, G. (Project member)
1/05/18 → 30/10/21
Project: Research direct