Dereje Woldegiorgis

Affiliation confirmed via AI analysis of OpenAlex, ORCID, and web sources.

Researcher

University of Arkansas

Also affiliated: University of Nottingham (2016)

Faculty Researcher

10 h-index 37 pubs 300 cited

Research Areas

Links

ORCID Research Group

OverviewAI-generated summary

Dereje Woldegiorgis' research focuses on power electronics, particularly the development and modeling of advanced inverter technologies. His work includes investigating hybrid silicon (Si) and silicon carbide (SiC) switches for high-efficiency, low-cost applications, such as in ANPC (Active Neutral Point Clamped) inverters. Woldegiorgis has published on control objectives, gate driving approaches, and packaging solutions for these hybrid switches, as well as precise electro-thermal power loss models for three-level ANPC inverters utilizing them. He has also explored active gate drivers for paralleling Si IGBTs and SiC MOSFETs and developed new hybrid voltage source converters with reduced active switch counts for HVDC applications. Woldegiorgis collaborates with researchers at the University of Arkansas at Fayetteville, including H. Alan Mantooth, Xia Du, Md Maksudul Hossain, and Rosten Sweeting. His scholarship metrics include an h-index of 10, with 37 total publications and 288 total citations.

Metrics

h-index: 10
Publications: 37
Citations: 300

Selected Publications

Arm Energy Investigation and Submodule Capacitor Sizing for the Asymmetric Alternate Arm Converter Topology (2023)

CPSS Transactions on Power Electronics and Applications 1 citation DOI OpenAlex
Hybrid Si/SiC Switches: A Review of Control Objectives, Gate Driving Approaches and Packaging Solutions (2022)

IEEE Journal of Emerging and Selected Topics in Power Electronics 25 citations DOI OpenAlex
Converter Arm Energy Model and Submodule Capacitor Sizing for the Asymmetric Alternate Arm Converter Topology (2022)

2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) DOI OpenAlex
Precise Electro-thermal Power Loss Model of a Three-level ANPC Inverter with Hybrid Si/SiC Switches (2022)

Chinese Journal of Electrical Engineering 16 citations DOI OpenAlex
Power Relay Based Multiple Device Cryogenic Characterization Method and Results (2022)

IEEE Open Journal of Industry Applications 2 citations DOI OpenAlex
A Modified Neutral-point Voltage Control Strategy for Three-level Inverters Based on Decomposition of Space Vector Diagram (2022)

CES Transactions on Electrical Machines and Systems 8 citations DOI OpenAlex
Accurate Power Loss Model of a Three-level ANPC Inverter Utilizing Hybrid Si/SiC Switching Devices (2021)

8 citations DOI OpenAlex
Investigation of a New Alternate Arm Modular Multilevel Converter Topology for HVDC Applications (2021)

2 citations DOI OpenAlex
A New Hybrid Voltage Source Converter With Reduced Active Switch Count for HVDC Applications (2021)

IEEE Transactions on Energy Conversion 8 citations DOI OpenAlex
Three-level Interleaved Voltage Source Inverter Topology Employing Hybrid "Si+SiC" Switches (2021)

1 citation DOI OpenAlex
Five-level Hybrid T-type Inverter Topology with Mixed "Si+SiC" Semiconductor Device Configuration (2021)

7 citations DOI OpenAlex
Application of An Active Gate Driver for Paralleling Operation of Si IGBT and SiC MOSFET (2021)

11 citations DOI OpenAlex
Four Control Freedoms AGD for Hybrid SiC MOSFET and Si IGBT Application (2021)

10 citations DOI OpenAlex
Simple Carrier Based Capacitor Voltage Balancing Technique for Three-Level Voltage Source Inverters (2021)

3 citations DOI OpenAlex
A High Efficiency and Low Cost ANPC Inverter Using Hybrid Si/SiC Switches (2021)

IEEE Open Journal of Industry Applications 54 citations DOI OpenAlex