{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,18]],"date-time":"2026-05-18T11:52:02Z","timestamp":1779105122195,"version":"3.51.4"},"reference-count":40,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2022,11,3]],"date-time":"2022-11-03T00:00:00Z","timestamp":1667433600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Research in the field of intelligent building control, asynchronous motors in fault conditions, feedback effects of controlled drives, measurement of ground current fields and biological effects","award":["SP2022\/17"],"award-info":[{"award-number":["SP2022\/17"]}]},{"name":"Research in the field of intelligent building control, asynchronous motors in fault conditions, feedback effects of controlled drives, measurement of ground current fields and biological effects","award":["DGS\/TEAM\/2020-017"],"award-info":[{"award-number":["DGS\/TEAM\/2020-017"]}]},{"name":"Smart Control System for Energy Flow Optimization and Management in a Microgrid with V2H\/V2G Technology","award":["SP2022\/17"],"award-info":[{"award-number":["SP2022\/17"]}]},{"name":"Smart Control System for Energy Flow Optimization and Management in a Microgrid with V2H\/V2G Technology","award":["DGS\/TEAM\/2020-017"],"award-info":[{"award-number":["DGS\/TEAM\/2020-017"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper deals with developing and implementing a bidirectional galvanically isolated on-board charger of a high-power density. The power density of the new charger was 4 kW\/kg and 2.46 kW\/dm3, and the maximum efficiency was 96.4% at 3.4 kW. Due to the requirement to achieve a high-power density, a single-stage inverter topology was used. Regarding switching losses, due to the topology of the circuit with so-called hard switching, the switching frequency was set to 150 kHz. A laboratory prototype was built to verify the properties and operating principles of the described charger topology. The on-board charger has been tested in a microgrid test platform. Due to the parasitic properties of the transformer and other electronic components, overvoltage with subsequent oscillations occurred on the primary side of the transformer and damped resonance on its secondary side. These parasitic properties caused interference and especially voltage stress on the semiconductor elements. These undesirable phenomena have been eliminated by adding an active element to the charger topology and a new transistor control strategy. This new switching control strategy of transistors has been patented.<\/jats:p>","DOI":"10.3390\/s22218473","type":"journal-article","created":{"date-parts":[[2022,11,4]],"date-time":"2022-11-04T04:00:51Z","timestamp":1667534451000},"page":"8473","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Innovative Bidirectional Isolated High-Power Density On-Board Charge for Vehicle-to-Grid"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3161-063X","authenticated-orcid":false,"given":"Roman","family":"Hrbac","sequence":"first","affiliation":[{"name":"Faculty of Electric Engineering and Computer Science, VSB-Technical University of Ostrava, 17. Listopadu 2172\/15, 708 00 Ostrava, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Libor","family":"Hrdina","sequence":"additional","affiliation":[{"name":"ENET Centre, VSB-Technical University of Ostrava, 17. Listopadu 2172\/15, 708 00 Ostrava, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4626-9844","authenticated-orcid":false,"given":"Vaclav","family":"Kolar","sequence":"additional","affiliation":[{"name":"Faculty of Electric Engineering and Computer Science, VSB-Technical University of Ostrava, 17. Listopadu 2172\/15, 708 00 Ostrava, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7835-5261","authenticated-orcid":false,"given":"Zdenek","family":"Slanina","sequence":"additional","affiliation":[{"name":"Faculty of Electric Engineering and Computer Science, VSB-Technical University of Ostrava, 17. 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