NDLI: Novel voltage control of 18 level multilevel inverter

Content Provider	IEEE Xplore Digital Library
Author	Mekhilef, S. Kadir, M.N.A.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia (Mekhilef, S.; Kadir, M.N.A.)
Abstract	This paper presents a three-stage eighteen-level inverter design with a novel control method. The inverter consists of a series connected main high-voltage, medium-voltage and low-voltage stages. The high voltage stage is made of a three-phase, six-switch conventional inverter. The medium and low voltage stages are made of three-level inverters constructed by H-bridge units. The proposed control strategy assumes a reference input voltage vector and aims to operate the inverter in one state per sampling time to produce the nearest vector to that reference. The control concept is based on representing the reference voltage in 60°-spaced two axis coordinate system. In this system, the inverter vectors' dimensions are integer multiples of the inverter's dc voltage and the expression of the inverter's vectors in terms of its switching variables is straightforward. Consequently, the switching signals can be obtained by simple fixed-point calculations. The approach of the proposed control strategy has been presented, the transformed inverter vectors and their relation to the switching variables have been defined, and the implementation process has been described. The test results verify the effectiveness of the proposed strategy in terms of computational efficiency as well as the capability of the inverter to produce very low distorted voltage with low switching losses.
Starting Page	1
Ending Page	6
File Size	1052836
Page Count	6
File Format	PDF
ISBN	9781467357678
e-ISBN	9781467357692
DOI	10.1109/ASCC.2013.6606075
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-23
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DSP control Low voltage pulse width modulation multilevel inverters Switches Medium voltage Converters Vectors Inverters Topology Voltage control
Content Type	Text
Resource Type	Article

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