Handong Gui
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View article: Mitigation of Current Distortion for GaN-Based CRM Totem-Pole PFC Rectifier With ZVS Control
Mitigation of Current Distortion for GaN-Based CRM Totem-Pole PFC Rectifier With ZVS Control Open
The GaN-based critical conduction mode (CRM) totem-pole power factor correction (PFC) converter with full-line-cycle zero voltage switching (ZVS) is a promising candidate for high-efficiency front-end rectifiers. However, the input current…
View article: Methodology of Low Inductance Busbar Design for Three-Level Converters
Methodology of Low Inductance Busbar Design for Three-Level Converters Open
Three-level (3L) converters are more susceptible to parasitics compared with two-level converters because of their complicated structure with multiple switching loops. In this article, the methodology of busbar layout design for 3L convert…
View article: Characterization and Failure Analysis of 650-V Enhancement-Mode GaN HEMT for Cryogenically Cooled Power Electronics
Characterization and Failure Analysis of 650-V Enhancement-Mode GaN HEMT for Cryogenically Cooled Power Electronics Open
In order to evaluate the feasibility of newly developed gallium nitride (GaN) devices in a cryogenically cooled converter, this article characterizes a 650-V enhancement-mode GaN high-electron mobility transistor (GaN HEMT) at cryogenic te…
View article: Review of Power Electronics Components at Cryogenic Temperatures
Review of Power Electronics Components at Cryogenic Temperatures Open
In order to apply power electronics systems to applications such as superconducting systems under cryogenic temperatures, it is necessary to investigate the characteristics of different parts in the power electronics systems. This paper re…
View article: Harmonic Analysis of Common-mode Reduction Modulation for Three-level Inverter
Harmonic Analysis of Common-mode Reduction Modulation for Three-level Inverter Open
This paper presents harmonic analysis of common-mode reduction (CMR) modulation for three-level voltage source inverters. The analytical model to calculate the harmonics of CMR modulation with arbitrary PWM sequence is developed. The impac…
View article: Design of Low Inductance Busbar for 500 kVA Three-Level ANPC Converter
Design of Low Inductance Busbar for 500 kVA Three-Level ANPC Converter Open
The adoption of SiC devices in high power applications enables higher switching speed, which requires lower circuit parasitic inductance to reduce the voltage overshoot. This paper presents the design of a busbar for a 500 kVA three-level …
View article: Gate Drive Technology Evaluation and Development to Maximize Switching Speed of SiC Discrete Devices and Power Modules in Hard Switching Applications
Gate Drive Technology Evaluation and Development to Maximize Switching Speed of SiC Discrete Devices and Power Modules in Hard Switching Applications Open
To understand the limitation of maximizing the switching speed of SiC low-current discrete devices and high-current power modules in hard switching applications, double pulse tests are conducted and the testing results are analyzed. For po…
View article: MW-Class Cryogenically-Cooled Inverter for Electric Aircraft Applications
MW-Class Cryogenically-Cooled Inverter for Electric Aircraft Applications Open
High power inverters will be a key enabler for future aircraft based on hybrid electric or turbo-electric propulsion as envisioned by NASA and Boeing. Cooling a power electronics converter to low temperature, e.g. using cryogenic cooling, …
View article: Modeling of Multi-Loops Related Device Turn-On Overvoltage in 3L-ANPC Converters
Modeling of Multi-Loops Related Device Turn-On Overvoltage in 3L-ANPC Converters Open
The analytical model for the device drain-source turn-on overvoltage in three-level active neutral point clamped (3L-ANPC) converters is established in this paper. Considering the two commutation loops in the converter, the relationship be…
View article: Design of a Single Controller for Multiple Paralleled Inverters
Design of a Single Controller for Multiple Paralleled Inverters Open
Paralleling power electronics inverters is an effective way to increase dc-ac system power level. Accurately synchronized switching action and independent closed-loop regulator are necessary to prevent circulating current in paralleled inv…
View article: Coupled Inductor Design for Interleaved Three-level Active Neutral Point Clamped Inverters Considering EMI Noise Reduction
Coupled Inductor Design for Interleaved Three-level Active Neutral Point Clamped Inverters Considering EMI Noise Reduction Open
This paper presents the coupled inductor design for interleaved three-level active neutral point clamped (ANPC) inverter considering electromagnetic interference (EMI) noise reduction. Compared to two-level case, the scenarios involved in …
View article: Investigation of Fourth-leg for Common-mode Noise Reduction in Three-level Neutral Point Clamped Inverter Fed Motor Drive
Investigation of Fourth-leg for Common-mode Noise Reduction in Three-level Neutral Point Clamped Inverter Fed Motor Drive Open
The four-leg topology has been applied to two-level inverters for common-mode (CM) noise elimination. To achieve zero common-mode voltage (CMV), the zero vector typically used in the two-level inverter is not allowed. As a result, the refe…
View article: A Simple Control to Reduce Device Over-Voltage Caused by Non-Active Switch Loop in Three-Level ANPC Converters
A Simple Control to Reduce Device Over-Voltage Caused by Non-Active Switch Loop in Three-Level ANPC Converters Open
With the development of wide band-gap (WBG) technology, the switching speed of power semiconductor devices increases, which makes circuits more sensitive to parasitics. For three-level active neutral point clamped (3L-ANPC) converters, the…
View article: Analysis of Circulating Harmonic Currents in Paralleled Three Level ANPC Inverters using SVM
Analysis of Circulating Harmonic Currents in Paralleled Three Level ANPC Inverters using SVM Open
In paralleled voltage source inverters (VSI), circulating current has both high frequency and low frequency components, and its spectrum highly depends on the modulation scheme. Previous research has mostly focused on the circulating curre…
View article: Current Source Gate Drive to Reduce Switching Loss for SiC MOSFETs
Current Source Gate Drive to Reduce Switching Loss for SiC MOSFETs Open
With conventional voltage source gate drives (VSG), the switching speed of SiC MOSFETs is difficult to increase due to large internal gate resistance, high Miller voltage, and limited gate voltage rating. This paper analyzes the requiremen…
View article: Analytical Analysis of Ac and Dc Side Harmonics of Three-level Active Neutral Point Clamped Inverter with Space Vector Modulation
Analytical Analysis of Ac and Dc Side Harmonics of Three-level Active Neutral Point Clamped Inverter with Space Vector Modulation Open
This paper presents a comprehensive analytical analysis of the ac and dc side harmonics of the three-level active neutral point clamped (ANPC) inverter with space vector modulation (SVM) scheme. An analytical model to calculate the harmoni…
View article: Common-mode inductor saturation analysis and design optimization based on spectrum concept
Common-mode inductor saturation analysis and design optimization based on spectrum concept Open
Understanding the CM inductor core saturation mechanism and reducing core flux density is critical for CM inductor design optimization. Instead of a time domain method, this paper introduces frequency domain spectrum concept for CM inducto…
View article: Common-mode noise reduction with impedance balancing in DC-fed motor drives
Common-mode noise reduction with impedance balancing in DC-fed motor drives Open
Unlike conventional passive or active filters, an impedance balancing circuit reduces the common-mode (CM) electromagnetic interference (EMI) noise by establishing an impedance balancing bridge. The EMI noise can be significantly reduced w…
View article: High precision gate signal timing control based active voltage balancing scheme for series-connected fast switching field-effect transistors
High precision gate signal timing control based active voltage balancing scheme for series-connected fast switching field-effect transistors Open
Due to the low availability, high cost, and limited performance of high voltage power devices in high voltage high power applications, series-connection of low voltage switches is commonly considered. Practically, because of the dynamic vo…