Back to Search
Start Over
Induction Motor Drives Fed by an NPC Inverter with Unbalanced DC-Link
- Source :
- Electronics, Vol 8, Iss 12, p 1379 (2019), Electronics, Volume 8, Issue 12
- Publication Year :
- 2019
- Publisher :
- MDPI AG, 2019.
-
Abstract
- Neutral Point Clamped (NPC) converters with n levels are traditionally controlled in such a way that the DC-link capacitors operate at 1/( n - 1) of the total DC-link voltage level. The voltage level across the DC-link capacitors has to be properly regulated by the capacitor unbalance control to contain the harmonic distortion of the converter output voltages. State-of-the-art modulation techniques address the problem of the DC-link voltage regulation for NPC inverters. However, they highly show reduced performance when unbalanced DC-link voltages are considered. In this paper, a novel Space Vector Modulation (SVM) is proposed for NPC converters with an unbalanced DC-link. At every modulation interval, the technique defines the optimal switching pattern by considering the actual unbalanced DC-link conditions. The proposed modulation allows improving the harmonic content of the NPC converter output voltage with respect to a traditional ML-SVM, when the same operating conditions are considered. As an extension, the proposed modulation technique will guarantee the same output voltage quality of a traditional ML-SVM with unbalanced DC-link, while improving the conversion efficiency thanks to a reduction of switching frequency.
- Subjects :
- Inverter
Modulation technique
Neutral Point Clamped (NPC)
SVM
Unbalanced DC-links
Computer Networks and Communications
Computer science
020209 energy
lcsh:TK7800-8360
02 engineering and technology
law.invention
Control theory
law
inverter
0202 electrical engineering, electronic engineering, information engineering
unbalanced dc-links
Electrical and Electronic Engineering
Total harmonic distortion
svm
020208 electrical & electronic engineering
lcsh:Electronics
Converters
Capacitor
Hardware and Architecture
Control and Systems Engineering
Neutral Point Clamped (NPC), SVM, inverter, unbalanced DC-links, modulation technique
neutral point clamped (npc)
modulation technique
Signal Processing
Harmonic
Voltage regulation
Space vector modulation
Induction motor
Subjects
Details
- Language :
- English
- ISSN :
- 20799292
- Volume :
- 8
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- Electronics
- Accession number :
- edsair.doi.dedup.....94ea16bd5b59100ff869a7ab11528ecb