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View article: Electric Motor Thermal Management
Electric Motor Thermal Management Open
The poster reports the accomplishments of EDT-Electric Motor Thermal Management consortium project for 2024 VTO Annual Merit Review (AMR). The overall aims of the project are to support research enabling compact, reliable, low-cost, and ef…
View article: PWM for Simultaneous Minimization of Switching Losses and CM Voltage in Current Source Inverters
PWM for Simultaneous Minimization of Switching Losses and CM Voltage in Current Source Inverters Open
This article proposes a new pulsewidth modulation (PWM) scheme that reduces common-mode (CM) voltage and switching losses simultaneously in CSI. The proposed PWM [i.e., reduced voltages PWM (RVM)] reduces CM voltages and switching losses b…
View article: Balanced current-source inverter
Balanced current-source inverter Open
A switching circuit for a current source inverter includes a first inverter leg, a second inverter leg, and a controller. The first inverter leg includes a first reverse-voltage-blocking (RB) switch, a second RB switch, and a third RB swit…
View article: Topological Equivalence of VSI and CSI Commutation Cells and Its Application to Switching Resonance Analysis and Damper Design
Topological Equivalence of VSI and CSI Commutation Cells and Its Application to Switching Resonance Analysis and Damper Design Open
This paper proposes the concept of the topological equivalence between the commutation cells of a voltage source inverter (VSI) and a current source inverter (CSI) using duality and equivalent circuit transformation techniques. A switching…
View article: Current source inverter with bi-directional switches
Current source inverter with bi-directional switches Open
A switching circuit includes a diode, a semiconductor switch, and a first bidirectional switch. The semiconductor switch is configured to conduct a first current from a second terminal to a third terminal of the semiconductor switch when a…
View article: WBG-Enabled Current-Source Inverters for Integrated PM Motor Drives
WBG-Enabled Current-Source Inverters for Integrated PM Motor Drives Open
This project takes advantage of the special capabilities of wide-bandgap (WBG) power semiconductor devices to develop innovative power electronics in the form of new current-source inverters (CSIs) that offer promising advantages over the …
View article: Hysteresis Loss in NdFeB Permanent Magnets in a Permanent Magnet Synchronous Machine
Hysteresis Loss in NdFeB Permanent Magnets in a Permanent Magnet Synchronous Machine Open
Most permanent magnet (PM) loss studies\nconsider only eddy current loss and neglect hysteresis.\nIn this article, the hysteresis behavior of two NdFeB PM\ngrades with differentmagnetic properties is assessed when\napplied in a PMSM. Data …
View article: <i>D-</i> and <i>Q</i>-Axis Inductance Estimation and Self-Sensing Condition Monitoring Using 45$^\circ$ Angle High-Frequency Injection
<i>D-</i> and <i>Q</i>-Axis Inductance Estimation and Self-Sensing Condition Monitoring Using 45$^\circ$ Angle High-Frequency Injection Open
This article proposes a high-frequency injection based dq-inductance estimation technique for synchronous machines. The d- and q-axis inductance is estimated using a single HFI between d and q axes, i.e., 45° injection angle. The d- and q-…
View article: Electrification of hydraulic systems using highefficiency permament magnet motors
Electrification of hydraulic systems using highefficiency permament magnet motors Open
In this paper, electrification of hydraulic systems is proposed using high-efficiency permanent magnet (PM) motors and wide bandgap power electronic drives.Direct driven hydraulics (DDH) is selected because of its higher efficiency compare…
View article: Influence of winding topologies and encapsulation materials on FSPM machine thermal performance
Influence of winding topologies and encapsulation materials on FSPM machine thermal performance Open
This study investigates the thermal impact of using different winding topologies and different winding encapsulation materials on dual‐stator 6/4 flux‐switching permanent magnet (FSPM) machine with water jacket cooling. The thermal perform…
View article: Electrification Annual Progress Report (FY2019)
Electrification Annual Progress Report (FY2019) Open
During fiscal year 2019 (FY 2019), the U.S. Department of Energy (DOE) Vehicle Technologies Office (VTO) funded early stage research & development (R&D) projects that address Batteries and Electrification of the U.S. transportation sector.…
View article: Analytical Calculation of Maximum Mechanical Stress on the Rotor of Interior Permanent-Magnet Synchronous Machines
Analytical Calculation of Maximum Mechanical Stress on the Rotor of Interior Permanent-Magnet Synchronous Machines Open
This article investigates analytical methods for calculating mechanical stress on the rotor of Interior Permanent-Magnet Synchronous Machines (IPMSMs). First, two existing analytical methods for calculating the stress on rotor iron bridges…
View article: A Review of Integrated Motor Drive and Wide-Bandgap Power Electronics for High-Performance Electro-Hydrostatic Actuators
A Review of Integrated Motor Drive and Wide-Bandgap Power Electronics for High-Performance Electro-Hydrostatic Actuators Open
An integration of an electric motor and a drive with wide-bandgap (WBG) devices possesses numerous attractive features for electrified and decentralized actuation systems. The WBG devices can operate at a high-junction temperature (>170 °C…
View article: High-Frequency GaN HEMTs Based Point-of-Load Synchronous Buck Converter with Zero-Voltage Switching
High-Frequency GaN HEMTs Based Point-of-Load Synchronous Buck Converter with Zero-Voltage Switching Open
Gallium nitride (GaN) power switching devices are promising candidates for high switching frequency and high efficiency power conversion due to their fast switching, low on-state resistance, and high-temperature operation capability. In or…
View article: Performance Evaluation of GaN-Based Synchronous Boost Converter under Various Output Voltage, Load Current, and Switching Frequency Operations
Performance Evaluation of GaN-Based Synchronous Boost Converter under Various Output Voltage, Load Current, and Switching Frequency Operations Open
Gallium nitride (GaN)-based power switching devices, such as high-electron-mobility transistors (HEMT), provide significant performance improvements in terms of faster switching speed, zero reverse recovery, and lower on-state resistance c…