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Topology and Control of a Four-Level ANPC Inverter.
- Source :
- IEEE Transactions on Power Electronics; Mar2020, Vol. 35 Issue 3, p2342-2352, 11p
- Publication Year :
- 2020
-
Abstract
- Four-level hybrid-clamped inverter is a newly proposed topology that can operate under a wide voltage range without switches connected in series. However, when it is applied in medium voltage high power conversions, the flying capacitors in each phase will occupy a huge volume and a high switching frequency is required to restrain the voltage ripples. In order to overcome this drawback, a four-level active neutral-point clamped inverter is discussed in this paper, which consists of only six switches and no diodes or flying capacitors are required. In order to balance the neutral-point voltages under the full power factor and modulation index range, a capacitor voltage balance method based on carrier-overlapped pulsewidth modulation is proposed in this paper. The upper and lower dc-link capacitor voltages are balanced by zero-sequence voltage injection and the central dc-link capacitor voltage is balanced by adjusting the duty cycles of switching signals slightly. Simulation and experimental results are presented to confirm the validity of this method. [ABSTRACT FROM AUTHOR]
- Subjects :
- HIGH voltages
TOPOLOGY
Subjects
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 35
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 140827899
- Full Text :
- https://doi.org/10.1109/TPEL.2019.2927500