A5034144052- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Railway Systems and Energy Efficiency
- Wireless Power Transfer Systems
- Microgrid Control and Optimization
- Energy Harvesting in Wireless Networks
- Advanced Sensor and Energy Harvesting Materials
- Antenna Design and Analysis
- Electrical Contact Performance and Analysis
- Electric Motor Design and Analysis
- Traffic Prediction and Management Techniques
- Railway Engineering and Dynamics
- HVDC Systems and Fault Protection
- Electric and Hybrid Vehicle Technologies
- Innovative Energy Harvesting Technologies
- Silicon Carbide Semiconductor Technologies
- Transportation and Mobility Innovations
- Electromagnetic Compatibility and Noise Suppression
- Power Line Communications and Noise
- Advanced Control Systems Optimization
- Power Systems and Technologies
- Radio Wave Propagation Studies
- Metal-Organic Frameworks: Synthesis and Applications
- GaN-based semiconductor devices and materials
- Tactile and Sensory Interactions
City University of Hong Kong
2023-2025
Southwest Jiaotong University
2024
Hong Kong Polytechnic University
2022-2023
Xiamen University
2015
The H-bridge (HB) converters are essential components in various power typologies, offering dual energy flow, increasing density, and enhancing extensibility. For the HB converters, dead zone plays a crucial role avoiding semiconductors against shoot-through phenomenon phase leg of an converter. However, it also negatively affects quality output ac currents, impacting system performance. This letter introduces simplified digital logic-based scheme that effectively compensates for converters....
Compared with the traditional passive- and activedamping techniques for mitigating impedance mismatch between input of constant power loads (CPLs) output DC link within microgrids, there is a growing interest in leveraging model predictive control (MPC). MPC proven to have advantages addressing issue, which leads system instability oscillations, owing its handling, multivariable control, capabilities, optimization-based control. Nevertheless, generalized faces some technical challenges as it...
Compared with the single-vector-based model predictive control (MPC) technique, multiple-vector-based MPC technique gains interests in improving total harmonic distortion (THD) of stator currents and reducing electromagnetic torque flux ripples for a three-phase surface permanent magnet synchronous motor (SPMSM). However, complicated enumeration operation vector selection duty cycle calculation increase computational burden limit its penetration. Hence, this article, simplified...
There is a trend to use artificial neural networks (ANNs) as approximation models implement explicit model-predictive control (EMPC) on hardware. However, the vanilla ANN-based EMPC scheme requires an overredundant ANN structure for achieving better fitting performance but at expense of increasing online implementation resources, such computation time, memory cost, etc. This article proposes light (LISABE). It shows much superior than with reduced time and resources under combination...
A cascaded H-bridge multilevel converter (CHBMC), which is composed of power cells, an attractive ac–dc for medium- and high-voltage applications in terms its modularity, improved harmonic performance, higher rated voltage withstand capability. Nevertheless, the overall operation stability CHBMC can be affected by inevitable issues, such as open-circuit (OC) switch fault. This issue causes adverse effects. Hence, it vital to develop effective but straightforward method identify OC switches....
Thermal monitoring of the long-track transmitter (Tx) magnetic mechanism an industrial dynamic wireless power transfer (DWPT) system is necessary for its reliable operation. This article proposes optical fiber composite winding (OFCW) in situ thermal Tx mechanism. Multichannel fibers are compounded on wire, which forms a structure, to detect internal distribution whole with fast response and high spatial resolution. A simplified optimization method based temperature field characteristics...
This article introduces a novel coupling mechanism along with simplified configuration strategy for achieving robust and wide-area dynamic wireless charging of multipath movable receivers (Rxs). The proposed involves non-overlapping arrangement multitransmitter (Tx) coils in 2-D plane, which are omnidirectionally decoupled by integrating simple planar coils, effectively expanding the area flexibility. To enhance flux harvesting capability maximize stable each Tx cell, dual-winding...
The traditional model-based energy management strategy (EMS) for regenerative braking storage systems (RBESS) is obsoleting in the face of increasingly complex and un-certain operation conditions railway power system (RPS). In this paper, a model-free deep reinforcement learning (DRL) method proposed. First, multi-objective manage-ment problem RBESS formulated to concurrently achieve RBE utilization demand shaving RPS. Then, modeled as Markov decision process (MDP) be solved by DRL-based...
The airflow sensor enabled by triboelectric nanogenerator (TENG) is significant for intelligent lab safety and human–computer interaction applications. However, the reported airflow/wind focuses on enhancing sensing materials structures, lack of high resolution, smart signal analysis. Herein, we present a self-powered micro-airflow its artificial intelligence (AI) system, applied interaction. as-fabricated has sensitivity <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
In multiple-receiver-based wireless power transfer (WPT) equalizers, ensuring uniform voltage across receiving coils is essential. Conventional methods, such as realigning or adding structural components, often increase the system complexity and cost. To tackle this challenge, we propose a dual-layer WPT equalizer architecture that rectifies imbalances within between energy storage modules. This compensates for mutual inductance variations caused by misalignments coil properties offers...
Abstract In weak-coupling wireless power transmission, increasing operating frequency, and incorporating metamaterials, resonance structures or ferrite cores have been explored as effective solutions to enhance efficiency. However, these present significant challenges that need be addressed. The increased frequency boosts core losses when it exceeds the working range of material. Existing metamaterial-based in terms requiring additional space for slab installation, resulting overall size....
Portability and efficiency are crucial parameters in wireless power transfer (WPT) systems for extended-distance applications. However, these often face challenges of low mutual inductance. Generalized solutions employ ferrite, intermediate coils, metamaterials, or increasing operating frequency to address issues. those always lead poor portability with extra weight volume, except the frequency. To tackle challenges, this article proposes a transmitter-embedded metasurface (TEMS) WPT system....
Explicit model predictive control (EMPC) has attracted extensive attention in the field of power electronics owing to its excellent dynamic performance. However, implementation EMPC hardware poses considerable challenges as it requires a large amount computing resources for online computation. In this regard, paper proposes use double-rectified linear unit (DualReLU) artificial neural network (ANN) approximate EMPC. By taking advantage bilaterally bounded property offline law distribution...
Abstract Significant efforts are devoted to optimizing the efficiency of triboelectric energy harvesting systems, particularly through design an advanced power management system (PMS) for Triboelectric Nanoenerators (TENGs). A critical aspect PMS is and control switches. However, existing switches face significant limitations. For spark switches, precise cannot be achieved, electronic can only operate at voltages below several hundred volts which limited by risk electrical breakdown. To...
The increasing traction load of high-speed railways with single-phase, high-power, and spatiotemporal movable has brought major impacts challenges to the grid voltage quality. In this paper, a probabilistic analysis framework uncertainty is investigated implement temporal impact traction-load on for railway applications. First, single-phase power supply system (TPSS) used, equivalent three-phase model based port transformation transformer. Meanwhile, diffusion-based kernel density estimator...