Jianning Dong
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Optimization design and experimental study of axial-swirling bubble generator Open
In order to realize the lightweight of spinning bikes, ANSYS was used to analyze the static characteristics of the support frame of the spinning bike. The height, length, and thickness of the support frame were analyzed sensitively. Finall…
View article: A Hybrid Modulation Scheme for Efficiency Optimization and Ripple Reduction in Secondary-Side Controlled Wireless Power Transfer Systems
A Hybrid Modulation Scheme for Efficiency Optimization and Ripple Reduction in Secondary-Side Controlled Wireless Power Transfer Systems Open
This article presents a hybrid modulation (HM) scheme to facilitate secondary-side control (SSC) in wireless power transfer (WPT) systems. To achieve broad power regulation in WPT systems, the conventional pulsewidth modulation (PWM) exhib…
View article: Power Density Limits of Propulsion Motor for Electric Aircraft: A Study on Insulation Thickness
Power Density Limits of Propulsion Motor for Electric Aircraft: A Study on Insulation Thickness Open
This paper studies the power density limits of propulsion motor for electric aircraft considering thermal aspects and breakdown voltage reduction of insulation. The study employs multi-objective optimization (MOO) to explore various motor …
View article: Dual-Side Capacitor Tuning and Cooperative Control for Efficiency-Optimized Wide Output Voltages in Wireless EV Charging
Dual-Side Capacitor Tuning and Cooperative Control for Efficiency-Optimized Wide Output Voltages in Wireless EV Charging Open
This article presents a dual-side capacitor tuning and cooperative control strategy for wireless electric vehicle (EV) charging. To improve the efficiency of wireless EV charging across broad output voltages and wide-range load variations,…
View article: Guest editorial: Advances in conductive and wireless powering and charging technologies for transportation applications
Guest editorial: Advances in conductive and wireless powering and charging technologies for transportation applications Open
Charging systems for electric transports are becoming more and more prevalent and are reaching increasingly high power levels now approaching megawatts in heavy-duty vehicle-related applications. This evolution is not only concerning condu…
Optimization of the Load Command for a Coal-Fired Power Unit via Particle Swarm Optimization–Long Short-Term Memory Model Open
This study addresses the challenges faced by coal-fired power plants in adapting to energy fluctuations following the integration of renewable energy sources into the power grid. The flexible operation of thermal power plants has become a …
Impact of stator segmentation on forces and vibrations in PM generators for offshore wind power Open
The ModHVDC concept is a modular permanent magnet generator which uses insulated stator segments with dedicated power electronic converters to produce HVDC. This could significantly reduce the number of required power conversion steps for …
A Dynamic Frequency Sweeping Based Parameter Estimation Method for Wireless Power Transfer Open
It is ideal for the wireless power transfer (WPT) systems to operate at the resonance state for better transmission performance. In practice, however, the parameters of the resonant circuits often deviate because of the capacitance drift a…
An Improved Peak Voltage Calculation Method for Compensation Components in S-S and LCC-S Compensated Wireless Power Transfer Systems Open
The pursuit of battery charging technology for electric vehicle (EV) has led to extensive research on the inductive-based wireless power transfer (WPT) systems. In this paper, the compensation component (including coils) stresses will be s…
A Parameter Recognition-Based Impedance Tuning Method for SS-Compensated Wireless Power Transfer Systems Open
This article presents a parameter recognition-based impedance tuning method for the impedance mismatch caused by capacitance drift and coil misalignment in series-series-compensated wireless power transfer (WPT) systems. First, a parameter…
Hybrid Analytical Model for AC Copper Loss Computation of Hairpin Winding Open
This article proposes a hybrid analytical model (HAM) for predicting ac copper losses in hairpin windings. The HAM combines the nonlinear semi-analytical model (SAM) and the 1-D ac copper loss computation model to solve the inaccurate boun…
Magnetic Field Prediction of U-Shaped Interior Permanent Magnet Motor Considering Magnetic Bridge Saturation Open
In this article, a new analytical model for predicting the magnetic field of the U-shaped interior permanent magnet motor (IPMM) is proposed. In the polar coordinates, rectangular permanent magnets are equivalent to the combination of cons…
Low Output Power Ripple Dynamic Wireless Power Transfer based on Dual-Phase Non-Overlapped Transmitters Open
One of the challenges of dynamic wireless power transfer (DWPT) systems for electric vehicle (EV) charging applications is to reduce pick-up power fluctuation. Building a multiphase transmitter (Tx) is proven to be effective in stabilizing…
Low Output Power Ripple Dynamic Wireless Power Transfer based on Dual-Phase Non-Overlapped Transmitters Open
One of the challenges of dynamic wireless power transfer (DWPT) systems for electric vehicle (EV) charging applications is to reduce pick-up power fluctuation. Building a multiphase transmitter (Tx) is proven to be effective in stabilizing…
A Variable-Frequency ZVS Modulation for Four-Switch Buck+Boost Converters with Seamless Step-up/down Mode Transition Open
This paper introduces variable-frequency zero voltage switching (ZVS) modulation strategy for the four-switch buck+boost converter with one operating pattern for the inductor current, i.e., three-segment inductor current modulation control…
Magnetic Field Prediction in Cubic Spoke-Type Permanent-Magnet Machine Considering Magnetic Saturation Open
In this article, a nonlinear semianalytical model (SAM) is presented to predict the magnetic field distribution (MFD) and electromagnetic performances (EPs) in the cubic spoke-type permanent magnet (PM) machine. To model the rectangular PM…
Impact of Stator Segmentation on Forces and Vibrations in PM Generators for Offshore Wind Power Open
The ModHVDC concept is a modular permanent magnet generator which uses insulated stator segments with dedicated power electronic converters to produce HVDC. This could significantly reduce the number of required power conversion steps for …
Impact of Stator Segmentation on Forces and Vibrations in PM Generators for Offshore Wind Power Open
The ModHVDC concept is a modular permanent magnet generator which uses insulated stator segments with dedicated power electronic converters to produce HVDC. This could significantly reduce the number of required power conversion steps for …
Prognostics for Lithium-ion batteries for electric Vertical Take-off and Landing aircraft using data-driven machine learning Open
The health management of batteries is a key enabler for the adoption of Electric Vertical Take-off and Landing vehicles (eVTOLs). Currently, few studies consider the health management of eVTOL batteries. One distinct characteristic of batt…
Frequency Tracking Method and Compensation Parameters Optimization to Improve Capacitor Deviation Tolerance of the Wireless Power Transfer System Open
Compensation capacitors are naturally susceptible to manufacturing defects and aging effects, leading to the degraded performance of a wireless power transfer (WPT) system. This article focuses on the compensation parameters optimization d…
Three-Mode Variable-Frequency ZVS Modulation for Four-Switch Buck+Boost Converters With Ultra-High Efficiency Open
This article introduces a three-mode variable-frequency zero-voltage switching (ZVS) modulation method for the four-switch buck+boost converter. This method makes this circuit concept well suited for applications, such as wireless power ch…
A Mode-Switching-Based Phase Shift Control for Optimized Efficiency and Wide ZVS Operations in Wireless Power Transfer Systems Open
This article proposes a mode-switching-based phase shift control (MS-PSC) for wireless power transfer (WPT) systems, which is able to achieve power regulation, load matching, and wide ZVS operations simultaneously without using additional …
Semianalytical Model of Multiphase Halbach Array Axial Flux Permanent-Magnet Motor Considering Magnetic Saturation Open
This article proposes a nonlinear semianalytical model (SAM) of the multiphase Halbach array axial flux permanent-magnet motor (AFPMM) to speed up the computation of its magnetic field. Compared to the existing analytical models, the propo…
View article: Wind turbine drivetrains: state-of-the-art technologies and future development trends
Wind turbine drivetrains: state-of-the-art technologies and future development trends Open
This paper presents the state-of-the-art technologies and development trends of wind turbine drivetrains – the system that converts kinetic energy of the wind to electrical energy – in different stages of their life cycle: design, manufact…
Thermal Cycling in Converter IGBT Modules with Different Cooling Systems in Pitch- and Active Stall-Controlled Tidal Turbines Open
This paper compares active and passive cooling systems in tidal turbine power electronic converters. The comparison is based on the lifetime of the IGBT (insulated gate bipolar transistor) power modules, calculated from the accumulated fat…
Integrated Solution for Electric Vehicle and Foreign Object Detection in the Application of Dynamic Inductive Power Transfer Open
One of the challenges with the dynamic inductive power transfer (DIPT) technique is the electric vehicle detection (EVD) that helps the DIPT system to control the power supply of the transmitter. The EVD method applying auxiliary coils is …
Study of Back-end DC/DC Converter for 3.7 kW Wireless Charging System according to SAE J2954 Open
In a wireless charging system, a back-end DC/DC converter can be used after the coil rectification stage to match the battery charging requirements and to optimize the resonant converter operation. In this paper, a synchronous boost conver…
View article: Wind turbine drivetrains: state-of-the-art technologies and future development trends
Wind turbine drivetrains: state-of-the-art technologies and future development trends Open
This paper presents the state-of-the-art technologies and development trends of wind turbine drivetrains – the energy conversion systems transferring the kinetic energy of the wind to electrical energy – in different stages of their life c…