Voltage vector control of a hybrid three-stage 18-level inverter by vector decomposition

Kadir, M.N.A. and Mekhilef, Saad and Ping, H.W. (2010) Voltage vector control of a hybrid three-stage 18-level inverter by vector decomposition. IET Power Electronics, 3 (4). pp. 601-611. ISSN 1755-4543, DOI https://doi.org/10.1049/iet-pel.2009.0085.

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This study presents a three-stage 18-level inverter design and its innovative control method. The inverter consists of a series-connected main high-, medium- and low-voltage stages. The high-voltage stage is made of a three-phase, six-switch 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 controller operates to reach the desired state with minimum switching actions, giving the priority in switching reduction to the higher voltage stage. The approach of the proposed control strategy has been presented, a set of related terms has been defined and the implementation process has been described. The test results verify the effectiveness of the proposed strategy and the capability of the inverter to produce low-voltage distortion and switching losses.

Item Type: Article
Additional Information: Kadir, M. N. Abdul Mekhilef, S. Ping, H. W.
Uncontrolled Keywords: multilevel inverter, modulation, converters,
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 13 Feb 2013 02:49
Last Modified: 25 Oct 2019 04:09
URI: http://eprints.um.edu.my/id/eprint/4824

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