Hanwen Zhang

ORCID: 0000-0003-0180-0993
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About
Contact & Profiles
Research Areas
  • Microgrid Control and Optimization
  • Multilevel Inverters and Converters
  • Advanced DC-DC Converters
  • HVDC Systems and Fault Protection
  • Advanced Battery Technologies Research
  • Silicon Carbide Semiconductor Technologies
  • Building Energy and Comfort Optimization
  • Islanding Detection in Power Systems
  • Tribology and Lubrication Engineering
  • Power Quality and Harmonics
  • Advanced Combustion Engine Technologies
  • Magnetic Bearings and Levitation Dynamics
  • Adaptive Control of Nonlinear Systems
  • Energy Efficiency and Management
  • High-Voltage Power Transmission Systems
  • Advanced Fiber Optic Sensors
  • Power Systems and Renewable Energy
  • Superconducting Materials and Applications
  • Stability and Controllability of Differential Equations
  • Characterization and Applications of Magnetic Nanoparticles
  • Maritime Transport Emissions and Efficiency
  • Aerosol Filtration and Electrostatic Precipitation
  • Autonomous Vehicle Technology and Safety
  • Robotics and Sensor-Based Localization
  • Traffic control and management

Beihang University
2023-2025

Aalborg University
2021-2025

Guangxi University of Science and Technology
2024-2025

Shandong University of Science and Technology
2024-2025

National University of Defense Technology
2025

Peking University Shenzhen Hospital
2025

Shanxi University
2022-2024

Xi'an Shiyou University
2023

Technical University of Munich
2023

RWTH Aachen University
2023

This article proposes an improved distributed cooperative control strategy for the energy storage system (ESS) in islanded dc microgrid. To meet requirements of state charge (SoC) balance, accurate current sharing, and voltage regulation, a hierarchical structure is established. In primary layer, droop coefficient adaptively adjusted through SoC dynamic changes each unit (ESU) to achieve two balance adjustment factors are introduced improve convergence speed accuracy. secondary information...

10.1109/jestpe.2021.3072701 article EN IEEE Journal of Emerging and Selected Topics in Power Electronics 2021-04-12

DC power supply system has been widely applied in metro traction system. This article presents a novel framework for future (MTPS) with renewable energy, named renewable-electricity-hydrogen-integrated MTPS (RMTPS), to reduce overall energy consumption and carbon emission of the MTPS. The operation modes RMTPS are first developed, where triple active bridge converter based multiport router (MMER) is innovatively presented integrate electricity subsystem, hydrogen Then, an impedance modeling...

10.1109/tie.2023.3237898 article EN IEEE Transactions on Industrial Electronics 2023-01-23

This paper introduces a novel H-bridge structured ac-ac pulsewidth modulation (PWM) converter topology based on two-level non-differential ac chopper legs, which can work at the non-inverting and inverting modes for utility voltage compensation. Compared to traditional bipolar-type converter, no bidirectional switches are switched in complementary manner overcome commutation problem due delayed response of electronic circuits semiconductor switching devices. The detailed PWM control signals...

10.1109/tpel.2018.2890581 article EN IEEE Transactions on Power Electronics 2019-01-01

A novel single-phase pulsewidth modulation (PWM) direct ac-ac converter based on two-level nondifferential dual-buck ac chopper legs with inverting and noninverting operations is first proposed in this article. It has the ability to resolve both voltage sag swell problems at same time when used as distributed flexible conditioner. Compared traditional converter, it much enhanced system reliability thanks no shoot-through even all switches of each are turned on, therefore, PWM dead not needed...

10.1109/tpel.2020.3022026 article EN IEEE Transactions on Power Electronics 2020-09-07

In the work, we present a novel energy-efficient spacing policy and learning-based distributed model predictive control co-design framework for heterogeneous vehicle platoon considering road slope factor. A nonlinear longitudinal dynamics with look-ahead consideration is established each in platoon, whose total energy depletion computed by constructed consumption model. Benefiting from of platooning design, efficiency achieved optimizing inter-vehicular distances inputs simultaneously...

10.1109/tvt.2024.3408918 article EN IEEE Transactions on Vehicular Technology 2024-01-01

In this work, we propose a ChatGPT-based framework that collaborates with human expert instructions for safe and efficient vehicle platoon control. The collaborative integrates multi-objective decision-making to address challenges such as robust collision avoidance in complex traffic environments. To incorporate human- like reasoning, ChatGPT is firstly used interpret driving instructions, which often involve linguistic variables. It generates behavioral decisions computes feasible...

10.1109/tvt.2025.3525657 article EN cc-by-nc-nd IEEE Transactions on Vehicular Technology 2025-01-01

This study introduces an enhanced ORB-SLAM3 algorithm to address the limitations of traditional visual SLAM systems in feature extraction and localization accuracy within challenging terrains open-pit mining environments. It also tackles issue sparse point cloud maps for mobile robot navigation. By combining point-line features with a Micro-Electro-Mechanical System (MEMS) Inertial Measurement Unit (IMU), improves matching’s reliability, particularly low-texture areas. The method integrates...

10.3390/app15073579 article EN cc-by Applied Sciences 2025-03-25

Learning from multi-center medical datasets to obtain a high-performance global model is challenging due the privacy protection and data heterogeneity in healthcare systems. Current federated learning approaches are not efficient enough learn Non-Independent Identically Distributed (Non-IID) require high communication costs. In this work, practical computing framework proposed train Non-IID image segmentation under various setting low cost. Specifically, an cascaded diffusion trained...

10.1109/jbhi.2025.3549029 article EN IEEE Journal of Biomedical and Health Informatics 2025-01-01

10.1109/itoec63606.2025.10967712 article EN 2018 IEEE 4th Information Technology and Mechatronics Engineering Conference (ITOEC) 2025-03-14

The Plant Electrical System (PES) of the European DEMOnstration fusion power plant (DEMO), presently under conceptual design, shall supply to loads and deliver net Power Transmission Grid (PTG). Starting from available requirements, applicability DEMO PES technologies design approaches adopted in ITER nuclear plants (NPP) has been evaluated. This article presents results survey proposes alternative solutions deal with identified criticalities.

10.1109/tps.2024.3362198 article EN IEEE Transactions on Plasma Science 2024-02-21

Coupled mode theory (CMT) is a powerful framework for decomposing interactions between electromagnetic waves and scattering bodies into resonances their couplings with power-carrying channels. It has widespread use in few-resonance, weakly coupled resonator systems across nanophotonics, but cannot be applied to the complex scatterers of emerging importance. We quasinormal modes develop an exact, ab initio generalized from Maxwell's equations. This theory, which we denote "QCMT", enables...

10.48550/arxiv.2010.08650 preprint EN other-oa arXiv (Cornell University) 2020-01-01

Recent developments in vehicular traffic have brought about the concept of lane-free traffic, challenging traditional notion parallel lanes, allowing vehicles to potentially drive at any arbitrary lateral location road. In this paper, we investigate potential lines strategy proposed our previous study for an efficient distribution automated freeways. Potential allow structured where each vehicle receives a desired based on its speed. To end, mimic behavior conventional driving by assigning...

10.1109/itsc57777.2023.10421795 article EN 2022 IEEE 25th International Conference on Intelligent Transportation Systems (ITSC) 2023-09-24

Multiport dc–dc converters have been intensively concerned and studied in power electronics-based systems. However, the instability issue its suppression method are rarely discussed. This article investigates stability of triple active bridge (TAB) converter with two constant loads by impedance-based method, where output impedance TAB is derived extra element theorem. Then, a virtual damping (AD) control proposed, has four different positions at capacitor dc port. The effect proposed AD on...

10.1109/tie.2024.3371006 article EN IEEE Transactions on Industrial Electronics 2024-03-22

Motivated by the lack of systematic tools to obtain safe control laws for hybrid systems, we propose an optimization-based framework learning certifiably from data. In particular, assume a setting in which system dynamics are known and data exhibiting behavior is available. We barrier functions systems as means synthesize inputs. Based on this notion, present learn such Importantly, identify sufficient conditions that feasibility optimization problem ensures correctness learned functions,...

10.48550/arxiv.2011.04112 preprint EN other-oa arXiv (Cornell University) 2020-01-01

Building energy efficiency has increasing focus worldwide. The heating, ventilation, air-conditioning (HVAC) devices account for highest consumption in buildings Singapore. Multipoint sensing information the various scenario is critical to optimize HVAC operation, and increase of air-conditioning. A software called FloVENT® used simulation room models different scenario. It calculates temperature, airflow speed, pressure other parameters mathematical way, providing solutions models. first...

10.1109/iecon.2015.7392132 article EN 2015-11-01

Line-frequency-isolation flexible ac-link converter based on direct ac–ac choppers (FACL) is a novel power conversion device expected to realize voltage compensation and flow control. Compared with the traditional source inverter (VSI) devices, FACL has no dc-link capacitors that lead high equipment failure rate. First, this article systematically introduces FACL. The principle of analyzed, output comparison between unipolar bipolar presented. Then, high-performance proposed. It eliminates...

10.1109/tpel.2021.3120179 article EN IEEE Transactions on Power Electronics 2021-10-15

This paper presents a Black Start (BS) strategy for DC microgrids (DCMGs) to enhance the resilience of AC/DC hybrid distribution systems during blackouts. The proposed architecture utilizes multiport interlinking converters (MICs) interconnect multiple DCMGs, which can act as local BS units enable flexible boundaries DCMGs. In control strategy, two operating modes be realized, including grid-forming mode and grid-feeding mode, bottom-up power restoration islanding operation approach involves...

10.1109/pedg56097.2023.10215306 article EN 2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) 2023-06-09
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