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Title: | Spurious power losses in modular multilevel converter arm equivalent model | Authors: | Stepanov, A Saad, H Karaagac, U Mahseredjian, J |
Issue Date: | Feb-2020 | Source: | IEEE transactions on power delivery, Feb. 2020, v. 35, no. 1, p. 205-213 | Abstract: | This paper demonstrates the presence of spurious power losses or generation in the Arm Equivalent Model (AEM) of Modular Multilevel Converters. Such power losses can occur if model equations are not solved simultaneously with surrounding power circuit equations, which is the case when the AEM is implemented using control system blocks in electromagnetic transient simulation software. Depending on operating conditions and simulation parameters, these additional losses can represent a significant part of the total converter station losses or even surpass them, thus making simulation results inaccurate. Analytical demonstration of the losses is presented, and several models that eliminate the losses are proposed. Based on simulation studies, only the variable resistance model and equivalent voltage source model can give accurate simulation results without significantly increasing simulation time and generating or consuming spurious power. | Keywords: | Arm equivalent model High-voltage direct current Losses Modeling Modular multilevel converter |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE transactions on power delivery | ISSN: | 0885-8977 | EISSN: | 1937-4208 | DOI: | 10.1109/TPWRD.2019.2911052 | Rights: | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The following publication A. Stepanov, H. Saad, U. Karaagac and J. Mahseredjian, "Spurious Power Losses in Modular Multilevel Converter Arm Equivalent Model," in IEEE Transactions on Power Delivery, vol. 35, no. 1, pp. 205-213, Feb. 2020 is available at https://dx.doi.org/10.1109/TPWRD.2019.2911052. |
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