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Title: Phasor Domain Steady-State Modeling and Design of the DC–DC Modular Multilevel Converter

Abstract

The DC-DC Modular Multilevel Converter (MMC), which originated from the AC-DC MMC, is an attractive converter topology for interconnection of medium-/high-voltage DC grids. This paper presents design considerations for the DC-DC MMC to achieve high efficiency and reduced component sizes. A steady-state mathematical model of the DC-DC MMC in the phasor-domain is developed. Based on the developed model, a design approach is proposed to size the components and to select the operating frequency of the converter to satisfy a set of design constraints while achieving high efficiency. The design approach includes sizing of the arm inductor, Sub-Module (SM) capacitor, and phase filtering inductor along with the selection of AC operating frequency of the converter. The accuracy of the developed model and the effectiveness of the design approach are validated based on the simulation studies in the PSCAD/EMTDC software environment. The analysis and developments of this paper can be used as a guideline for design of the DC-DC MMC.

Authors:
 [1];  [1];  [2];  [1]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
  2. Purdue Univ., West Lafayette, IN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1376524
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Power Delivery
Additional Journal Information:
Journal Volume: 31; Journal Issue: 5; Journal ID: ISSN 0885-8977
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; 24 POWER TRANSMISSION AND DISTRIBUTION

Citation Formats

Yang, Heng, Qin, Jiangchao, Debnath, Suman, and Saeedifard, Maryam. Phasor Domain Steady-State Modeling and Design of the DC–DC Modular Multilevel Converter. United States: N. p., 2016. Web. doi:10.1109/TPWRD.2016.2515498.
Yang, Heng, Qin, Jiangchao, Debnath, Suman, & Saeedifard, Maryam. Phasor Domain Steady-State Modeling and Design of the DC–DC Modular Multilevel Converter. United States. doi:10.1109/TPWRD.2016.2515498.
Yang, Heng, Qin, Jiangchao, Debnath, Suman, and Saeedifard, Maryam. Wed . "Phasor Domain Steady-State Modeling and Design of the DC–DC Modular Multilevel Converter". United States. doi:10.1109/TPWRD.2016.2515498. https://www.osti.gov/servlets/purl/1376524.
@article{osti_1376524,
title = {Phasor Domain Steady-State Modeling and Design of the DC–DC Modular Multilevel Converter},
author = {Yang, Heng and Qin, Jiangchao and Debnath, Suman and Saeedifard, Maryam},
abstractNote = {The DC-DC Modular Multilevel Converter (MMC), which originated from the AC-DC MMC, is an attractive converter topology for interconnection of medium-/high-voltage DC grids. This paper presents design considerations for the DC-DC MMC to achieve high efficiency and reduced component sizes. A steady-state mathematical model of the DC-DC MMC in the phasor-domain is developed. Based on the developed model, a design approach is proposed to size the components and to select the operating frequency of the converter to satisfy a set of design constraints while achieving high efficiency. The design approach includes sizing of the arm inductor, Sub-Module (SM) capacitor, and phase filtering inductor along with the selection of AC operating frequency of the converter. The accuracy of the developed model and the effectiveness of the design approach are validated based on the simulation studies in the PSCAD/EMTDC software environment. The analysis and developments of this paper can be used as a guideline for design of the DC-DC MMC.},
doi = {10.1109/TPWRD.2016.2515498},
journal = {IEEE Transactions on Power Delivery},
number = 5,
volume = 31,
place = {United States},
year = {2016},
month = {1}
}

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