{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:22:20Z","timestamp":1760235740619,"version":"build-2065373602"},"reference-count":34,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2021,9,17]],"date-time":"2021-09-17T00:00:00Z","timestamp":1631836800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006595","name":"Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii","doi-asserted-by":"publisher","award":["PN-III-P4-ID-PCE-2020-0008"],"award-info":[{"award-number":["PN-III-P4-ID-PCE-2020-0008"]}],"id":[{"id":"10.13039\/501100006595","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Applied Sciences"],"abstract":"<jats:p>In variable speed applications, the cycloconverter-based AC to AC power conversion technique has gained more attention among researchers and academics than the traditional rectifier-inverter-based AC to AC power conversion process. The conventional rectifier-inverter-based AC to AC power conversion process has several disadvantages. It uses multi-power stages that increase the converter power conversion losses and increase the cost, volume, and weight of power losses. Besides high conduction and switching losses, the electromagnetic interference problems also accompany the above issues. In this regard, this paper proposes a novel step-down Triac based cycloconverter for variable speed control applications. The proposed topology uses only five Triac devices for one-third and one-fourth frequency conversion of 50 Hz with reduced total harmonics distortion without using any pulse width modulation techniques. The proposed model is designed in the MATLAB\/SIMULINK environment. The simulation results show that around 18.85% and 23.67% of total harmonics distortions are reduced in the proposed converter for one-third and one-fourth frequency conversion of 50 Hz, respectively. Two physical experiments are carried out to prove the validity of the simulation results.<\/jats:p>","DOI":"10.3390\/app11188688","type":"journal-article","created":{"date-parts":[[2021,9,17]],"date-time":"2021-09-17T21:23:29Z","timestamp":1631913809000},"page":"8688","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Triac Based Novel Single Phase Step-Down Cycloconverter with Reduced THDs for Variable Speed Applications"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2095-2581","authenticated-orcid":false,"given":"Tariqul","family":"Islam","sequence":"first","affiliation":[{"name":"Department of Electrical and Electronic Engineering, Faculty of Engineering, Green University of Bangladesh, Dhaka 1207, Bangladesh"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6294-5144","authenticated-orcid":false,"given":"Hady H.","family":"Fayek","sequence":"additional","affiliation":[{"name":"Department of Electromechanics Engineering, Faculty of Engineering, Heliopolis University, Cairo 11785, Egypt"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6899-8442","authenticated-orcid":false,"given":"Eugen","family":"Rusu","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Faculty of Engineering, \u2018Dunarea de Jos\u2019 University of Galati, 47 Domneasca Street, 800008 Galati, Romania"}]},{"given":"Fayzur","family":"Rahman","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronic Engineering, Faculty of Engineering, Green University of Bangladesh, Dhaka 1207, Bangladesh"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,17]]},"reference":[{"key":"ref_1","first-page":"346","article-title":"Modeling and simulation of single phase cycloconverter","volume":"2","author":"Singh","year":"2012","journal-title":"Int. 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