Sensor-less operation of hybrid boost modular multilevel converter for subsea multiphase medium voltage drives

M. Daoud, A. Massoud, A. Elserougi, Ayman Abdel-Khalik, Shehab Ahmed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper introduces Hybrid Boost Modular Multilevel Converter (Hybrid Boost MMC) as a suitable candidate for subsea drive systems. The investigated drive system is based on a five-phase Induction Machine (IM) in order to enhance system's reliability and to gain other several merits of multiphase machines compared with conventional three-phase IMs. Each arm in the employed Hybrid Boost combines Half-Bridge (HB) and Full-Bridge (FB) Submodules (SMs) with ratio 2:1 respectively. The suggested Hybrid Boost MMC provides boosting capability with a reduced number of switches, which can be employed effectively instead of employing conventional voltage source converter followed by bulky step-up transformer. In addition, voltage balancing of the capacitors in any MMC is crucial in order to ensure proper operation of the converter. A sensor-less capacitor voltage balancing technique is proposed in this paper, employing five-level five-phase MMC with two HB-SMs and single FB-SM per MMC's arm. A simulation case study for the proposed system is investigated using a 1000 Hp five-phase Induction Machine (IM).

Original languageEnglish
Title of host publicationProceedings - 2017 IEEE Southern Power Electronics Conference, SPEC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
Volume2018-January
ISBN (Electronic)9781509064250
DOIs
Publication statusPublished - 6 Apr 2018
Event2017 IEEE Southern Power Electronics Conference, SPEC 2017 - Puerto Varas, Chile
Duration: 4 Dec 20177 Dec 2017

Other

Other2017 IEEE Southern Power Electronics Conference, SPEC 2017
CountryChile
CityPuerto Varas
Period4/12/177/12/17

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Keywords

  • hybrid boost
  • medium voltage drives
  • multiphase
  • Sensorless

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

Daoud, M., Massoud, A., Elserougi, A., Abdel-Khalik, A., & Ahmed, S. (2018). Sensor-less operation of hybrid boost modular multilevel converter for subsea multiphase medium voltage drives. In Proceedings - 2017 IEEE Southern Power Electronics Conference, SPEC 2017 (Vol. 2018-January, pp. 1-5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SPEC.2017.8333606