{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T07:02:33Z","timestamp":1760598153449,"version":"3.41.2"},"reference-count":32,"publisher":"World Scientific Pub Co Pte Ltd","issue":"15","funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["Grant No. 51867019"],"award-info":[{"award-number":["Grant No. 51867019"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100004479","name":"Natural Science Foundation of Jiangxi Province","doi-asserted-by":"crossref","award":["Grant No. 20212BAB204040"],"award-info":[{"award-number":["Grant No. 20212BAB204040"]}],"id":[{"id":"10.13039\/501100004479","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Science and Technology Project of Jiangxi Provincial Department of Education","award":["Grant No. GJJ211918"],"award-info":[{"award-number":["Grant No. GJJ211918"]}]},{"name":"Key Scientific Research Projects of Colleges and Universities in Henan Province","award":["Grant No. 21B470014"],"award-info":[{"award-number":["Grant No. 21B470014"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:p>DC voltage detection of sub-modules is very important for the stability of cascaded multilevel converters. Operation and maintenance personnel need a detection algorithm to supplement the uncertainty and risk caused by the traditional redundancy scheme. This paper presented a DC voltage indirect estimation method based on current transformer. The method uses the AC side current value, as well as the sub-module equivalent circuit model and switching state to estimate the DC voltage of the sub-module of the cascade system. The estimation models are established and can be used to the sub-modules of three topologies, i.e., half-bridge, H bridge topology and clamp double sub-module. Simulation and experimental systems are built to testify the proposed method. The results showed that, when [Formula: see text] or 12, the indirect detection model based on AC current met the requirements of detection accuracy within 1% under different calculation steps, and the sampling error had little influence on it. The indirect estimation method could reduce the use of DC transformers and improve equipment reliability and maintainability.<\/jats:p>","DOI":"10.1142\/s021812662250270x","type":"journal-article","created":{"date-parts":[[2022,5,14]],"date-time":"2022-05-14T03:12:20Z","timestamp":1652497940000},"source":"Crossref","is-referenced-by-count":1,"title":["DC Voltage Inversion Estimation Method of MMC Submodule Based on Current Information"],"prefix":"10.1142","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4627-646X","authenticated-orcid":false,"given":"Yang","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Electrical Engineering, Nanchang Institute of Technology, Nanchang 330099, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ran","family":"Zhao","sequence":"additional","affiliation":[{"name":"Zhongyuan-Petersburg Aviation College, Zhongyuan University of Technology, Zhengzhou 45000, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yunmin","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Nanchang Institute of Technology, Nanchang 330099, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianbing","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Nanchang Institute of Technology, Nanchang 330099, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jing","family":"Sheng","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Nanchang Institute of Technology, Nanchang 330099, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huijun","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Nanchang Institute of Technology, Nanchang 330099, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fanxing","family":"Rao","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Nanchang Institute of Technology, Nanchang 330099, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2022,6,16]]},"reference":[{"key":"S021812662250270XBIB001","first-page":"1719","volume":"46","author":"Chang L.","year":"2020","journal-title":"High Volt. 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