A5101956428- Advanced DC-DC Converters
- HVDC Systems and Fault Protection
- Silicon Carbide Semiconductor Technologies
- Multilevel Inverters and Converters
- High-Voltage Power Transmission Systems
- Microgrid Control and Optimization
- Electric Motor Design and Analysis
- Electrical and Thermal Properties of Materials
- Ferroelectric and Piezoelectric Materials
- Magnetic Bearings and Levitation Dynamics
- Sensorless Control of Electric Motors
- Railway Systems and Energy Efficiency
- Wireless Power Transfer Systems
- Electronic and Structural Properties of Oxides
- Conducting polymers and applications
- Advancements in Battery Materials
- Real-time simulation and control systems
- Advanced Photocatalysis Techniques
- Microwave Dielectric Ceramics Synthesis
- Advancements in Solid Oxide Fuel Cells
- Advanced Polymer Synthesis and Characterization
- Advanced Battery Materials and Technologies
- Iterative Learning Control Systems
- Force Microscopy Techniques and Applications
- Perovskite Materials and Applications
Institute of Electrical Engineering
2010-2024
Chinese Academy of Sciences
2013-2024
University of Chinese Academy of Sciences
2017-2024
Civil Aviation University of China
2024
Xinjiang Technical Institute of Physics & Chemistry
2023-2024
Nanchong Central Hospital
2023
Southwest Medical University
2023
National Medical Products Administration
2023
Shandong University
2023
Tianjin Medical University General Hospital
2022
Ideally, the inner (the upper or lower arm) current of a modular multilevel converter (MMC) is ideally assumed to be sum dc component and an ac fundamental frequency. However, as flows through submodule (SM) capacitors, capacitor voltages fluctuate with time. Consequently, usually distorted peak/RMS value it increased compared theoretical value. The currents will increase power losses may threaten safe operation devices capacitors. This paper proposes closed-loop method for suppression in...
A mitochondria-targetable fluorescence probe, methyl(4-hydroxyphenyl)amino-substituted pyronin (<bold>1</bold>), was exploited, which could highly selectively sense peroxynitrite (ONOO<sup>−</sup>) within seconds.
The Li metal anode possesses the high specific capacity and minimum reduction potential known as renaissance of high-energy-density battery. However, security problems brought by uncontrolled dendrites have hindered its development. Integrating with non-flammable solid-state electrolytes (SSEs) provides a promising approach to solve problem achieve safe batteries. recent studies indicate that still occur in interior inorganic SSEs, although mechanical strength SSEs can resist dendrite growth...
For high power voltage source converter based direct current transmission systems, modular multilevel (MMC) is the most popular circuit topology nowadays. It known that existence of second-order harmonic circulating (SHCC) component in arm MMC increases loss converter. Conventionally, SHCC eliminating methods are usually adopted to reduce loss. The relationship between and analyzed first this paper. analysis shows conventional not optimal terms minimum MMC. A optimization control scheme also...
Significance The physical properties of proteins and polyions in electrolyte solutions are crucial importance for understanding biological processes controlling biotechnological processes. concentration salt controls the range strength interactions these complex electrolytes. Here, multiscale coarse-grained molecular dynamics simulations reveal long-range between nanoparticles aqueous at high monovalent concentrations. explain crystallization even when they strongly charged reentrant...
Full-bridge submodule (FBSM) capacitance of an FBSM-based modular multilevel converter (FB-MMC) can achieve a significant reduction with boosted ac voltages, which makes it promising candidate in voltage-source-converter-based high-voltage-direct-current scenarios terms cost and dc short-circuit fault tolerance. With consideration third-order harmonic voltage injection (THVI), the characteristics FBSM fundamental frequency second-order fluctuations are analyzed detail under steady-state...
Cascaded H-bridge (CHB) -based solid-state transformer (SST) consists of CHBs and dual active bridge (DAB) converters. Series-resonant DAB converters (SRCs) are widely used for its advantages soft switching characteristic simple control. However, the high-frequency-link (HFL) currents SRCs contain double-line-frequency harmonic fluctuation in three-phase CHB-based SST, resulting high current stress. In this article, SRC is substituted with dc terminal dynamic equivalent circuit, analytical...
Bacterial microcompartments compartmentalize the enzymes that aid chemical and energy production in many bacterial species. They are postulated to help bacteria survive hostile environments. Metabolic engineers interested repurposing these organelles for non-native functions. Here, we use computational, theoretical, experimental approaches determine mechanisms effectively control microcompartment self-assembly. We find, via multiscale modeling mutagenesis studies, interactions responsible...
Due to the power interaction between phase-shifted dual active bridges (PSDABs) and series resonant (SRDABs) in hybrid modular dc Transformer (HMDCT), it is difficulty optimize current stress based on transferred power. An extended-state-observer model predictive control (ESO-MPC) strategy with extended phase shift (EPS) proposed of PSDABs HMDCT. The MPC employed calculate optimal PSDABs. Moreover, a first-order ESO introduced observe uncertain output Based calculated power, duty ratios each...
Nickel oxide (NiO x ) is a promising hole transport material in inverted organic‐inorganic metal halide perovskite solar cells. However, its low intrinsic conductivity hinders further improvement device performance. Here, we employ trimercapto‐s‐triazine trisodium salt (TTTS) as chelating agent of Ni 2+ the NiO layer to improve conductivity. Due electron‐deficient triazine ring, TTTS complexes with via strong ‐N coordination bond and increases ratio 3+ :Ni . The increased concentration...
Porous alumina microfibers were prepared, and used to construct a highly sensitive electrochemical sensor for quercetin.
Compared to the conventional half-bridge submodule-based modular multilevel converter (MMC), full-bridge submodule (FBSM) capacitance of FB-MMC can be reduced significantly with consideration negative voltage state FBSM, which has benefits cost and size reduction. This paper analyzes characteristics FBSM fundamental frequency second-order harmonic fluctuations without zero sequence injection (ZSVI) comparatively. The analyses show that ZSVI almost no impacts on fluctuations, while components...
A decentralized control method for power module (PM) capacitor voltage and switching frequency balancing in modular multilevel converter is presented this paper. The proposed composed of a central controller, six arm controllers, several group controllers. controller only charge the PM within corresponding group, among groups an arm. based on PI using average each to keep proposed. dynamically adjusted extra exchange number strategy difference also developed balance groups. key advantages...
Abstract Studies of layered structure nanomaterials is greatly explored to provide enormous potential for the development photocatalytic bioapplication. As one nanomaterials, bismuth halide have attracted much attention due their outstanding properties, such as excellent optoelectronic performance, higher biosafety, high abundance, etc. Here, a brief review recent research progress based (BiONs) in bioapplication provided, mainly including antibacterial and photodynamic therapy. Surface...
DC transformer (DCT) which is composed of dual active bridge (DAB) converters, capable fulfiling high-ratio voltage conversion between the medium-voltage dc distribution and low-voltage distribution. A model predictive control (MPC) strategy was proposed for DAB-DCT to improve dynamic performance achieve a proper power distribution, considering bidirectional DCT. The traditional closed-loop scheme with single-phase shift (SPS) MPC SPS are compared on downscale laboratory prototype, using...
Abstract The utilization of Ag electrodes in inverted perovskite solar cells (PSCs) is prevalent; however, their inherent reactivity and corrosive characteristics toward materials often lead to significant stability concerns. Here, 1‐ethyl‐3‐methyl‐1h‐imidazolium 2‐mercaptobenzothiazole (EM) ionic liquid designed introduce it into the bathocuproine (BCP) barrier layer mitigate potential chemical corrosion electrode by layer. EM forms multiple interaction modes through coordination two types...
This paper presents the development of single side ironless Halbach permanent magnet linear synchronous motor (PMLSM) for a novel electromagnetic suspension (EMS) maglev vehicle. The basic structure propulsion and vehicle are firstly described. Then thrust normal force PMLSM analyzed. configuration system field oriented control (FOC) scheme introduced. Single bogie prototype have been developed dynamic experiments performed on 204m test line. experimental results prove feasibility