A New Three-Phase Hybrid Multilevel Topology with Hybrid Modulation and Control Strategy for Front-End Converter Applications

Muhammad Ali (), Muhammad Talib Faiz, Muhammad Mansoor Khan, Vincent Ng and Ka-Hong Loo
Additional contact information
Muhammad Ali: Centre for Advances in Reliability and Safety, New Territories, Hong Kong
Muhammad Talib Faiz: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University (PolyU), Hung Hom, Hong Kong
Muhammad Mansoor Khan: Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, Shanghai Jiaotong University, Shanghai 200240, China
Vincent Ng: Centre for Advances in Reliability and Safety, New Territories, Hong Kong
Ka-Hong Loo: Centre for Advances in Reliability and Safety, New Territories, Hong Kong

Mathematics, 2024, vol. 12, issue 13, 1-23

Abstract: This article presents a novel hybrid three-phase multilevel topology with a hybrid modulation and a control strategy for lower-medium voltage front-end converters. The proposed topology consists of a series arrangement of a three-phase full bridge and a packed U-cell. Each phase leg of the circuit comprises eight active switches and two DC link sources, which are connected to a shared DC bus voltage source, thus generating seven levels of output voltage. The active switches of the proposed topology are categorized based on voltage stresses and controlled using a low-frequency space vector PWM and high-frequency alternative phase opposition disposition PWM techniques. To validate the proposed topology and demonstrate the performance and effectiveness of the hybrid modulation and control schemes, simulations in MATLAB/Simulink and experiments on a custom-designed laboratory prototype have been carried out, and the results are discussed in detail. Moreover, a comprehensive comparison has been conducted among the relevant topologies, which reveals several advantages that include a reduced voltage and a current total harmonic distortion (THD) of 11.28% and 1.76%, respectively, minimized switch loss by 10.3 kW, improved efficiency by 0.26%, and decreased the component count with two levels increased in the output voltage.

Keywords: hybrid medium voltage multilevel converter; hybrid modulation and control; space vector pulse width modulation (SV-PWM); alternative phase opposition disposition pulse width modulation (APOD-PWM) (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2227-7390/12/13/2116/pdf (application/pdf)
https://www.mdpi.com/2227-7390/12/13/2116/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jmathe:v:12:y:2024:i:13:p:2116-:d:1429775

Access Statistics for this article

Mathematics is currently edited by Ms. Emma He

More articles in Mathematics from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().