Dong Dong
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View article: Give birth in rural hometowns or urban areas? Place of delivery among rural migrant working mothers in the Pearl river delta, China
Give birth in rural hometowns or urban areas? Place of delivery among rural migrant working mothers in the Pearl river delta, China Open
Background In China, the participation of rural mothers in urban labor markets is on the rise, but there’s limited knowledge about the place of delivery among them. Why do certain rural migrant working mothers choose to return to their rur…
View article: Ultrafast Optically Controlled Power Switch: A General Design and Demonstration With 3.3 kV SiC MOSFET
Ultrafast Optically Controlled Power Switch: A General Design and Demonstration With 3.3 kV SiC MOSFET Open
Optically controlled high-voltage power devices are desirable for grid and renewable energy applications. This work proposes a hybrid device consisting of a high-voltage, high-power transistor, and two low-voltage, low-power photodiodes (P…
View article: Modeling and Control of a Hybrid Modular Multilevel Converter for High-AC/Low-DC Medium-Voltage Applications
Modeling and Control of a Hybrid Modular Multilevel Converter for High-AC/Low-DC Medium-Voltage Applications Open
With ever-increasing power-density requirements, technologies such as energy storage systems and electric-vehicles can benefit greatly from interfacing medium-voltage (MV)-AC grid like 13.8kV or 30kV using high-AC/low-DC voltage converter.…
View article: Isolation and Characterization of Mycoplasma ovipneumoniae Infecting Goats with Pneumonia in Anhui Province, China
Isolation and Characterization of Mycoplasma ovipneumoniae Infecting Goats with Pneumonia in Anhui Province, China Open
Mycoplasma ovipneumoniae (M. ovipneumoniae) causes a fatal infection in goats, leading to significant economic losses in the small-ruminant industry worldwide. The present study aimed to characterize the strains of M. ovipneumoniae infecti…
View article: DC Flashover in Printed Circuit Boards at Low Gas Pressures: Mechanism and Mitigation Recommendations
DC Flashover in Printed Circuit Boards at Low Gas Pressures: Mechanism and Mitigation Recommendations Open
PCB layouts with different polygon shapes and insulation distances were prepared and their surface flashover voltage subjected to different ramping rates were measured at different temperatures and different low gas pressures for emulated …
View article: Thermal Consideration and Design for a 200-kW SiC-Based High-Density Three-Phase Inverter in More Electric Aircraft
Thermal Consideration and Design for a 200-kW SiC-Based High-Density Three-Phase Inverter in More Electric Aircraft Open
Thermal management is important since it determines the reliability and robustness of power inverters. It becomes more critical for high-altitude motor drives due to the reduced air density. This paper provides a design process of thermal …
View article: In-situ synthesis and characterization of calcium phosphate coatings on rapidly solidified zirconia toughened alumina eutectic bioceramics by laser cladding
In-situ synthesis and characterization of calcium phosphate coatings on rapidly solidified zirconia toughened alumina eutectic bioceramics by laser cladding Open
Rapidly solidified zirconia toughened alumina (ZTA) eutectic bioceramics are promising load-bearing materials that meet the needs for durability and aging resistance for biomedical applications. However, one of the major problems is their …
View article: Surge Current Interruption Capability of Discrete IGBT Devices in DC Hybrid Circuit Breakers
Surge Current Interruption Capability of Discrete IGBT Devices in DC Hybrid Circuit Breakers Open
International audience
View article: Xenos: Dataflow-Centric Optimization to Accelerate Model Inference on Edge Devices
Xenos: Dataflow-Centric Optimization to Accelerate Model Inference on Edge Devices Open
Edge computing has been emerging as a popular scenario for model inference. However, the inference performance on edge devices (e.g., Multi-Core DSP, FGPA, etc.) suffers from inefficiency due to the lack of highly optimized inference frame…
View article: Rotating switching strategy for power converters
Rotating switching strategy for power converters Open
Systems and methods for operating a power converter with a plurality of inverter blocks with silicon carbide MOSFETs are provided. A DC to AC converter can include a plurality of inverter blocks. Each inverter block can include a plurality…
View article: Hybrid Modular Multilevel Converters for High-AC/Low-DC Medium-Voltage Applications
Hybrid Modular Multilevel Converters for High-AC/Low-DC Medium-Voltage Applications Open
With ever-increasing power-density requirements, technologies such as energy storage systems and electric-vehicles can benefit greatly from interfacing medium-voltage (MV)-AC grid like 13.8kV or 30kV using high-AC/low-DC voltage converter.…
View article: Development of a CFD model indicating the quantitative relationship among reactor dimension, bed flow unevenness, and performance for VOCs biofilters
Development of a CFD model indicating the quantitative relationship among reactor dimension, bed flow unevenness, and performance for VOCs biofilters Open
This study presents a Computational Fluid Dynamics (CFD) based biofiltration model to investigate the airflow distribution and the impact of bed flow unevenness (BFU) on the removal of Volatile Organic Compounds (VOCs) in biofilters. The b…
View article: PCGC: A performance compact graph compiler based on multilevel fusion-splitting rules
PCGC: A performance compact graph compiler based on multilevel fusion-splitting rules Open
The existing deep learning compilers are unable to perform efficient hardware performance-related graph fusion when both time and power consumption are considered. The operator optimization cost is too high because of excessive fusion or s…
View article: Forced Air-Cooling Thermal Design Methodology for High-Density, High-Frequency, and High-Power Planar Transformers in 1U Applications
Forced Air-Cooling Thermal Design Methodology for High-Density, High-Frequency, and High-Power Planar Transformers in 1U Applications Open
Due to increased loss per unit volume in power transformers when operating at higher frequency, the increase in cooling system size can outweigh high-frequency transformer (HFT) size reduction benefits. Conventional air-cooling approach si…
View article: Design and Qualification of a 100-kW Three-Phase SiC-Based Generator Rectifier Unit Rated for 50 000-Ft Altitude
Design and Qualification of a 100-kW Three-Phase SiC-Based Generator Rectifier Unit Rated for 50 000-Ft Altitude Open
Featuring higher blocking voltage, smaller parasitic elements, faster switching speed, and a more compact package, wide-bandgap semiconductor devices like Silicon Carbide devices (SiC), can enable compact aircraft generator-rectifier units…
View article: 3.5 kW/in<sup>3</sup> Planar Coupled Inductor Design and Optimization for a 50 kW 3-level Four-Switch Buck-Boost (3L-FSBB) Converter
3.5 kW/in<sup>3</sup> Planar Coupled Inductor Design and Optimization for a 50 kW 3-level Four-Switch Buck-Boost (3L-FSBB) Converter Open
Planar magnetics design has been widely used in power electronics field because of the low profile, ease of manufacturability, and high power density. This paper first proposes a 3-level four-switch buck-boost (3L-FSBB) converter for the d…
View article: Experimental study of the reduction and removal of turn-on snubber for IGCT based MMC submodule using fast silicon diodes
Experimental study of the reduction and removal of turn-on snubber for IGCT based MMC submodule using fast silicon diodes Open
International audience
View article: Performances of Planetary Magnetorheological Transmission Devices
Performances of Planetary Magnetorheological Transmission Devices Open
Magnetorheological transmission devices (MRTDs) are a type of power transmission device using magnetorheological fluids (MRFs) as the transmission medium, which have the advantages of rapid response and continuously adjustable output perfo…
View article: 12-kV 1-kA Breaking Capable Modular Power Electronic Interrupter With Staged Turn-off Strategy for Medium-Voltage DC Hybrid Circuit Breaker
12-kV 1-kA Breaking Capable Modular Power Electronic Interrupter With Staged Turn-off Strategy for Medium-Voltage DC Hybrid Circuit Breaker Open
International audience
View article: Integrated processing of Al2O3/ZrO2 eutectic implants with bioactive Ca-P coatings by laser cladding
Integrated processing of Al2O3/ZrO2 eutectic implants with bioactive Ca-P coatings by laser cladding Open
Al2O3/ZrO2 composites are currently popular for orthopaedic and dental restorations. However, the long-term reliability of Al2O3/ZrO2 implants should be further improved by reducing the aging sensitivity and enhancing the osteointegration …
View article: Design of a 10 kV SiC MOSFET-based high-density, high-efficiency, modular medium-voltage power converter
Design of a 10 kV SiC MOSFET-based high-density, high-efficiency, modular medium-voltage power converter Open
Simultaneously imposed challenges of high-voltage insulation, high dv/dt, high-switching frequency, fast protection, and thermal management associated with the adoption of 10 kV SiC MOSFET, often pose nearly insurmountable barriers to pote…
View article: Hybrid Voltage Balancing Approach for Series-Connected SiC MOSFETs for DC–AC Medium-Voltage Power Conversion Applications
Hybrid Voltage Balancing Approach for Series-Connected SiC MOSFETs for DC–AC Medium-Voltage Power Conversion Applications Open
Due to its fast switching speed, the voltage sharing of series-connected SiC MOSFETs is more sensitive to the parasitic components from the power modules and the system, which results in more challenges for voltage balancing control. For t…
View article: Planar Common-Mode EMI Filter Design and Optimization for High-Altitude 100-kW SiC Inverter/Rectifier System
Planar Common-Mode EMI Filter Design and Optimization for High-Altitude 100-kW SiC Inverter/Rectifier System Open
Silicon-carbide (SiC) devices are receiving popularity for high-power converter systems in aircraft due to many advantages over silicon counterparts. However, the electromagnetic interference (EMI) problems are more serious with the SiC de…
View article: Modeling of Power Electronics Systems and PWM Modulators in Harmonic-State Space
Modeling of Power Electronics Systems and PWM Modulators in Harmonic-State Space Open
Modeling and simulation of the converter dominated systems have recently emerged as a monumental challenge. These simulations are useful for predicting instability and system's harmonic content, consequently assisting in developing better …
View article: Polyvinyl-Alcohol-Modified Calcium Sulphoaluminate Cement Repair Mortar: Hydration and Properties
Polyvinyl-Alcohol-Modified Calcium Sulphoaluminate Cement Repair Mortar: Hydration and Properties Open
Polyvinyl alcohol (PVA) and calcium sulphoaluminate (CSA) cement were used to prepare repair mortar for the restoration of the walls of a building built with bricks. The preparation, hydration, and properties of the PVA-modified CSA cement…
View article: Design and Implementation of an 18-kW 500-kHz 98.8% Efficiency High-Density Battery Charger With Partial Power Processing
Design and Implementation of an 18-kW 500-kHz 98.8% Efficiency High-Density Battery Charger With Partial Power Processing Open
The demand for high-density, high-efficiency bidirectional battery chargers is driven by the fast development of energy storage system in renewable energy system, microgrid, and transportation electrification. Isolated dc–dc converter that…
View article: High Power Density Design of Power Electronic Interrupter in Hybrid DC Circuit Breaker
High Power Density Design of Power Electronic Interrupter in Hybrid DC Circuit Breaker Open
International audience
View article: Surge Current Capability of IGBT Based Power Electronic Interrupter Modules for Hybrid DC Circuit Breaker Applications
Surge Current Capability of IGBT Based Power Electronic Interrupter Modules for Hybrid DC Circuit Breaker Applications Open
International audience
View article: A Single Passive Gate-Driver for Series-Connected Power Devices in DC Circuit Breaker Applications
A Single Passive Gate-Driver for Series-Connected Power Devices in DC Circuit Breaker Applications Open
This letter proposes a novel single passive gate driver solution based on passive devices to control series-connected power semiconductor devices for dc circuit breaker (DCCB) applications. The transient suppression devices (e.g., metal ox…
View article: Research on the Capacity of Li-ion Battery Packer Based on Capacity Incremental Curve
Research on the Capacity of Li-ion Battery Packer Based on Capacity Incremental Curve Open
Lithium ion battery is the most widely used and reliable power source for electric vehicles. With the development of electric vehicles, the safety, energy density, life and reliability of lithium ion batteries have been continuously improv…