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Title: An Active Modulation Scheme to Boost Voltage Utilisation of the Dual Converter with a Floating Bridge

Abstract

This paper proposes a capacitor voltage regulation method for the dual converter with a floating bridge for aerospace applications. This topology has previously been reported, but with a constrained voltage utilisation factor due to the need for capacitor voltage regulations. The effect of switching states on the voltage variation of capacitor is quantitatively modelled and an enhanced space vector modulation scheme with current feedback is proposed to achieve an active control of the floating capacitor voltages. This proposed method also allows further exploitation and utilisation of converter voltage. The relationship between the allowed modulation index of dual converter and load power factor is obtained and expressed using a fitted polynomial equation. The advantages of the proposed method include boosted voltage utilisation and superior performance in term of capacitor voltage balance. These advantages have been proven through simulation and experimental results on RL loads as well as with an open-end winding induction motor. The proposed modulation scheme can boost the converter voltage utilisation by at least 10% while achieving full four-level operation. More importantly, the higher available voltage allows extending the constant torque region of the motor, the further beginning of field weakening operation could be postponed.

Authors:
 [1];  [1];  [1];  [2];  [1];  [3]
  1. Univ. of Nottingham (United Kingdom). Power Electronics Machines and Control Group. Dept. of Electrical and Electronics Engineering
  2. Univ. of Nottingham (United Kingdom). Power Electronics Machines and Control Group. Dept. of Electrical and Electronics Engineering; Univ. of Nottingham Ningbo China (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Power Electronics and Electric Machinery Group
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Nottingham (United Kingdom)
Sponsoring Org.:
USDOE
OSTI Identifier:
1479727
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
IEEE Translations on Industrial Electronics
Additional Journal Information:
Journal Volume: 66; Journal Issue: 7; Journal ID: ISSN 0278-0046
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; dual converter; more electric aircraft; multilevel converters; space vector modulation; voltage regulation

Citation Formats

Huang, Zhen, Yang, Tao, Wheeler, Patrick, Galea, Michael, Giangrande, Paolo, and Chowdhury, Shajjad. An Active Modulation Scheme to Boost Voltage Utilisation of the Dual Converter with a Floating Bridge. United States: N. p., 2018. Web. doi:10.1109/TIE.2018.2873539.
Huang, Zhen, Yang, Tao, Wheeler, Patrick, Galea, Michael, Giangrande, Paolo, & Chowdhury, Shajjad. An Active Modulation Scheme to Boost Voltage Utilisation of the Dual Converter with a Floating Bridge. United States. https://doi.org/10.1109/TIE.2018.2873539
Huang, Zhen, Yang, Tao, Wheeler, Patrick, Galea, Michael, Giangrande, Paolo, and Chowdhury, Shajjad. 2018. "An Active Modulation Scheme to Boost Voltage Utilisation of the Dual Converter with a Floating Bridge". United States. https://doi.org/10.1109/TIE.2018.2873539. https://www.osti.gov/servlets/purl/1479727.
@article{osti_1479727,
title = {An Active Modulation Scheme to Boost Voltage Utilisation of the Dual Converter with a Floating Bridge},
author = {Huang, Zhen and Yang, Tao and Wheeler, Patrick and Galea, Michael and Giangrande, Paolo and Chowdhury, Shajjad},
abstractNote = {This paper proposes a capacitor voltage regulation method for the dual converter with a floating bridge for aerospace applications. This topology has previously been reported, but with a constrained voltage utilisation factor due to the need for capacitor voltage regulations. The effect of switching states on the voltage variation of capacitor is quantitatively modelled and an enhanced space vector modulation scheme with current feedback is proposed to achieve an active control of the floating capacitor voltages. This proposed method also allows further exploitation and utilisation of converter voltage. The relationship between the allowed modulation index of dual converter and load power factor is obtained and expressed using a fitted polynomial equation. The advantages of the proposed method include boosted voltage utilisation and superior performance in term of capacitor voltage balance. These advantages have been proven through simulation and experimental results on RL loads as well as with an open-end winding induction motor. The proposed modulation scheme can boost the converter voltage utilisation by at least 10% while achieving full four-level operation. More importantly, the higher available voltage allows extending the constant torque region of the motor, the further beginning of field weakening operation could be postponed.},
doi = {10.1109/TIE.2018.2873539},
url = {https://www.osti.gov/biblio/1479727}, journal = {IEEE Translations on Industrial Electronics},
issn = {0278-0046},
number = 7,
volume = 66,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 11 works
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Figures / Tables:

Fig. 1 Fig. 1: EMA architecture for secondary flight surface

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