Journal article
Novel Active Snubbers for SSCBs to Improve Switch Voltage Utilization Rate
IEEE journal of emerging and selected topics in power electronics, v 11(3), pp 2565-2576
01 Jun 2023
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This article proposes two novel active snubbers for direct current (dc) solid-state circuit breakers (SSCBs): metal-oxide-varistor with resistor-capacitor-switch (MOV-RCS) and active-MOV with resistor-capacitor-diode (AMOV-RCD). In the snubber branch, either a half- or full-controlled switch can be applicable, leading to four novel topologies. There are two main contributions: 1) MOV is disconnected from the power line during SSCB OFF-state, which enhances reliability as neither voltage nor power appears on MOV and 2) voltage utilization rate eta(v) of the main switch is remarkably increased, which improves efficiency and power density, and reduces design cost. Experiments of five prototypes are conducted including four proposed snubbers and a comparison with conventional MOV-RCD snubber. Results show that, for 1.2-kV MOSFETs as the main switch, new snubbers can enhance eta(v) from 37.5% to 60%, achieving 183-A dc current interruption under 720-V dc bus voltage within 2.4 mu s. Meanwhile, the voltage peak is limited to 1.112 kV.
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Details
- Title
- Novel Active Snubbers for SSCBs to Improve Switch Voltage Utilization Rate
- Creators
- Reza Kheirollahi - Drexel UniversityShuyan Zhao - Drexel UniversityHua Zhang - Rowan UniversityFei Lu - Drexel University
- Publication Details
- IEEE journal of emerging and selected topics in power electronics, v 11(3), pp 2565-2576
- Publisher
- IEEE
- Number of pages
- 12
- Grant note
- DE-AR0001114 / Advanced Research Projects Agency-Energy (ARPA-E), U.S. Department of Energy, through the BREAKERS Program; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Web of Science ID
- WOS:001014738800016
- Scopus ID
- 2-s2.0-85139859476
- Other Identifier
- 991020836503004721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Electrical & Electronic