A5114626747- Titanium Alloys Microstructure and Properties
- Intermetallics and Advanced Alloy Properties
- Electric Motor Design and Analysis
- Multilevel Inverters and Converters
- Advanced materials and composites
- Metallurgy and Material Forming
- Powder Metallurgy Techniques and Materials
- Advanced battery technologies research
- Microstructure and Mechanical Properties of Steels
- Bauxite Residue and Utilization
- Concrete and Cement Materials Research
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Magnetic Properties and Applications
- Microgrid Control and Optimization
- MXene and MAX Phase Materials
- Extraction and Separation Processes
- Metal and Thin Film Mechanics
- High voltage insulation and dielectric phenomena
- Recycled Aggregate Concrete Performance
- Advanced Battery Technologies Research
- Sensorless Control of Electric Motors
- Innovative concrete reinforcement materials
- HVDC Systems and Fault Protection
- Evaluation and Optimization Models
Institute of Microelectronics
2025
Hubei University
2023-2025
University of Sheffield
1999-2024
China University of Geosciences (Beijing)
2011-2024
Tsinghua University
2011-2024
State Grid Corporation of China (China)
2022-2024
Hunan Nonferrous Metal Research Institute
2023-2024
Central South University
2024
Changzhou University
2010-2023
University of Science and Technology Beijing
2009-2023
Abstract The mid‐Proterozoic (∼1.8–0.8 Ga) ocean‐atmosphere system is hypothesized to have experienced fluctuations in redox conditions with transient oxygenation events. One of these happened at ∼1.4 Ga, and it speculated that this event may link the emplacement large igneous province (LIP) time. However, direct evidence for relationship remains be proved. Here, we report Hg/TOC, P, trace element concentrations across Ga Xiamaling Formation North China. A prominent increase Hg/TOC slightly...
Zero sequence voltage (ZSV) can cause zero current (ZSC), while variation of common mode (CMV) bearing in an open winding (OW) permanent magnet synchronous machine (PMSM) fed by dc -bus dual two-level inverters. This article proposes a novel space vector pulsewidth modulation (SVPWM) strategy for simultaneously eliminating CMV and suppressing full frequency ZSC harmonics either linear or over region optimal selection switching combinations. The proposed SVPWM reduce large ZSV ripples number...
Abstract Aqueous zinc‐ion batteries (AZIBs), candidates for large‐scale energy storage, face limitations due to the poor reversibility of zinc anodes. It reports on pyridine derivatives with high donor characteristics, including 2‐chloro‐1‐methylpyridinium iodide (CMPI) and pyridine‐2‐acetaldoxime methyl (PAMI), as effective additives. At lower concentrations, these additives markedly curtail dendrites formation evolution hydrogen anode, thereby prolonging AZIBs life. Through a combination...
Abstract Aqueous zinc‐ion batteries (AZIBs) face challenges in practical applications due to unstable electrode‐electrolyte interfaces and zinc dendrite growth. This study introduces an ultra‐low concentration (5 mmol L⁻¹) zwitterionic additive, Pyridinium‐1‐Propane‐3‐sulfonate (PPS), reconstruct the electric double layer (EDL) regulate surface reactions. Compared with structurally similar ionic additive N‐Butylsulfonicpyridinium (BSO 3 Py) imidazole‐based 3‐(1‐Methyl‐1H‐imidazol‐3‐ium‐3‐yl)...
This paper introduces an enhanced approach for optimizing the flux-weakening performance of a non-salient permanent magnet synchronous machine (PMSM), by incorporating maximum torque per voltage (MTPV) region into conventional magnitude feedback control strategy. The MTPV strategy is initially optimized steady-state effect resistance, which plays crucial role in small power motors. To maintain stability and good dynamics region, current command controller utilized, as opposed to approach....
The multi-ionic adsorption behavior of recycled cement paste (RCP) exposed to NaCl and CaCl2 solutions is investigated in this study by comparing with that the ordinary (OCP). Na+, K+, Ca2+ Cl- RCP OCP are quantified ICP-OES potentiometric titration. has larger capacity for K+ compared OCP, which attributed a lager specific surface area RCP. For multi-ion both solutions, amount minor cation ions found be influenced concentration primary ion, reflecting competitive among ions. Besides,...
In this paper, a novel magnetization state (MS) control method is proposed by utilizing torque deviation to achieve the MS closed-loop for variable flux memory machine. Firstly, relationship between MSs and demand magnetizing current pulses built into look-up table, which also contains information on linkages dq-axis inductances under different MSs. Afterwards, model-based calculation adopted estimation, then, present target can be obtained utilized generate switch signal, will determine...
The delayed eukaryote evolution during the mid-Proterozoic may have been linked to prolonged low oxygen levels this period. Two short oxygenation events recently identified at ca. 1.57 Ga and 1.4 Ga, but redox conditions intervening interval remain poorly constrained. In study, we conducted mineralogical geochemical investigations on three sections of Wumishan Formation (ca. 1.52−1.47 Ga) that were deposited between two in Yanliao basin. results revealed distinct changes carbonate mineralogy...
In this article, two novel sinusoidal pulsewidth modulation (SPWM) strategies with simple implementation are proposed for an open-winding machine fed by isolated dc-bus dual two-level three-phase inverters to reduce switching frequency and current harmonics. The utilize zero sequence voltage injection unbalanced reference distribution generate discontinuous PWM low harmonics less action. Two different voltages introduced in article corresponding actions a cycle. novelty of is cycle compared...
In this article, a novel space vector pulsewidth modulation (SVPWM) with the zero sequence current (ZSC) control strategy is proposed to extend operation range for an open winding (OW) permanent magnet synchronous machine (PMSM). The SVPWM can achieve ZSC and by considering voltages in axis voltage vectors <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\alpha \beta $ </tex-math></inline-formula> -plane,...
Abstract Enhanced continental phosphorus (P) input into the oceans has been proposed as a potential trigger for 1.57 Ga oxygenation event; however, uncertainty remains due to absence of direct evidence seawater P concentrations. Here, we investigate shallow marine carbonate rocks Gaoyuzhuang Formation in North China Platform, using carbonate‐associated phosphate (CAP) proxy directly reconstruct levels at that time. Two significant CAP/(Ca + Mg) increases correspond with rises I/(Ca during...
In order to use photovoltaic cell effectively and improve its photoelectric conversion efficiency, the maximum power point of generation system should be tracked rapidly stably. After comparison analysis for several kinds frequently used tracking control methods, fuzzy logic method is proposed controller designed. The could quickly response changes outside environment, keeping working at all time. can eliminate oscillation around MPP raise stability system. We model simulate a in SIMULINK...
Electric vehicles (EV) could participate not only in the peak load shifting of power, but also frequency regulation distribution system based on technology Vehicle-to-Grid (V2G). Through transmission active power between EV's battery and network controlled by bidirectional V2G converter, primary be achieved locally. In this paper, a two stage converter relevant control strategy is designed advanced. Then droop introduced to improve previous strategy. Droop controller from curve used change...