{"title":"Dual-Input High Gain DC-DC Converter with Two Energy Storage Systems for Light EV Applications","authors":"Obulapathi Balapanuru, M. Lokhande, M. Aware","doi":"10.1109/FES57669.2023.10183039","DOIUrl":null,"url":null,"abstract":"This article proposes a new topology for a multi-input DC-DC converter that can handle unsymmetrical terminal voltages, providing high voltage gain, inherent current sharing, input-output isolation, and bidirectional power flow capability. The modified iSEPIC structure facilitates minimum-phase nature (eliminates the RHP Zero effect) with zero DC magnetizing current in the isolated transformer. Accordingly converter offers a 45% higher gain per component count (at D=0.5) than other reported converters. The current sensor less feature of the proposed converter, which is not common in reported multi-input converters, eliminates the need for inner current loop control during acceleration by supplying 70% of the required peak power (at D=0.6) from the ultracapacitor. The functional capabilities of the proposed converter make it suitable for battery/ultracapacitor-based EV applications. A 200W hardware prototype has been developed to validate the claimed functionalities of the proposed converter.","PeriodicalId":165790,"journal":{"name":"2023 International Conference on Future Energy Solutions (FES)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 International Conference on Future Energy Solutions (FES)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FES57669.2023.10183039","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This article proposes a new topology for a multi-input DC-DC converter that can handle unsymmetrical terminal voltages, providing high voltage gain, inherent current sharing, input-output isolation, and bidirectional power flow capability. The modified iSEPIC structure facilitates minimum-phase nature (eliminates the RHP Zero effect) with zero DC magnetizing current in the isolated transformer. Accordingly converter offers a 45% higher gain per component count (at D=0.5) than other reported converters. The current sensor less feature of the proposed converter, which is not common in reported multi-input converters, eliminates the need for inner current loop control during acceleration by supplying 70% of the required peak power (at D=0.6) from the ultracapacitor. The functional capabilities of the proposed converter make it suitable for battery/ultracapacitor-based EV applications. A 200W hardware prototype has been developed to validate the claimed functionalities of the proposed converter.