Yingjun Guo

ORCID: 0000-0001-9972-978X
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About
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Research Areas
  • Advanced DC-DC Converters
  • Multilevel Inverters and Converters
  • Microgrid Control and Optimization
  • Hybrid Renewable Energy Systems
  • Advanced Battery Technologies Research
  • Power Systems and Renewable Energy
  • Photovoltaic System Optimization Techniques
  • Advanced Sensor and Control Systems
  • Electric Motor Design and Analysis
  • Silicon Carbide Semiconductor Technologies
  • Advancements in Battery Materials
  • Advanced Battery Materials and Technologies
  • Integrated Energy Systems Optimization
  • Smart Grid Energy Management
  • Advanced Algorithms and Applications
  • Spine and Intervertebral Disc Pathology
  • Spinal Fractures and Fixation Techniques
  • Industrial Technology and Control Systems
  • Energy Load and Power Forecasting
  • Cervical and Thoracic Myelopathy
  • Fault Detection and Control Systems
  • Wireless Power Transfer Systems
  • Magnetic Properties and Applications
  • Sensorless Control of Electric Motors
  • Medical Imaging and Analysis

Hebei University of Science and Technology
2016-2025

Qinghai New Energy (China)
2024

Shandong University of Technology
2023

First Automotive Works (China)
2022

Sichuan University
2019-2021

West China Hospital of Sichuan University
2019-2021

Hebei University of Technology
2019-2020

Qilu Hospital of Shandong University
2014

China Medical University
2012

Second Military Medical University
2004

Abstract Electrolyte design has become ever more important to enhance the performance of lithium‐ion batteries (LIBs). However, flammability issue and high reactivity conventional electrolytes remain a major problem, especially when LIBs are operated at voltage extreme temperatures. Herein, we novel non‐flammable fluorinated ester electrolyte that enables cycling stability in wide‐temperature variations (e.g., −50 °C–60 °C) superior power capability (fast charge rates up 5.0 C) for...

10.1002/anie.202216189 article EN Angewandte Chemie International Edition 2022-12-26

Aqueous electrolyte design is pivotal for boosting the energy density and lifespan of aqueous batteries, because it can expand electrochemical stability window also mitigate parasitic side reactions. Until now, three main kinds electrolytes, i.e., water-in-salt, eutectic, additives-modified have been developed by which activity H2O be lowered and/or formed specific solid–electrolyte interphase (SEI) decomposition H2O. However, there still a lack universal model to elucidate reason improved...

10.1021/acsenergylett.2c02585 article EN ACS Energy Letters 2023-01-24

Wind power forecasting plays a key role in balancing the supply and load demand of system. To achieve reasonable processing decomposition input data for prediction, combined model is proposed, which Sparrow Search Algorithm (SSA) adopted to optimize Variational Mode Decomposition (VMD) parameters solve problem that VMD difficult optimal by manually setting parameters. Firstly, SSA used parameters, then optimized decompose data. At same time, entropy weight-grey relational analysis method...

10.1016/j.egyr.2023.05.181 article EN cc-by-nc-nd Energy Reports 2023-05-31

Abstract Electrolytes have recently regained significant attention in rechargeable batteries due to the discovery that electrolyte microstructures play a determinant role battery performance. By adjusting compositions of electrolytes cater various functionalities, such as high‐voltage, fast‐charging, wide‐temperature operation, and non‐flammable features, diverse range can be developed adapt different environmental working conditions. Nevertheless, elucidating understanding associated...

10.1002/aenm.202400569 article EN Advanced Energy Materials 2024-04-22

The development of rechargeable batteries beyond 300 Wh kg–1 for electric vehicles remains challenging, where low-capacity electrode materials (especially a graphite anode, 372 Ah kg–1) remain the major bottleneck. Although many high-capacity alternatives (e.g., Si-based alloys, metal oxides, or Li-based anode) are being widely explored, achieved energy density has not exceeded kg–1. Herein, we present new empirical model that considers multiple design parameters, besides capacities,...

10.1021/acsenergylett.0c00211 article EN ACS Energy Letters 2020-02-13

In the winter, a certain LNG receiving terminal operates exclusively with submerged combustion vaporizer (SCV). However, due to high operational costs associated SCV, new combined operation scheme utilizing both SCV and open rack (ORV) has been proposed. First, models for ORV gasification units were developed in Aspen HYSYS validated using actual parameters. Next, relationship between seawater inlet–outlet temperature difference minimum flow rate was determined, an optimized pump strategy,...

10.3390/en18020276 article EN cc-by Energies 2025-01-10

Solid state electrolytes have stimulated research interest due to their promising application in lithium batteries with high safety. In this paper, an asymmetrical structure composite solid electrolyte consisting of Li1.3Al0.3Ti1.7(PO4)3 (LATP), poly(vinylidene fluoride–hexafluoropropylene) (P(VDF-HFP)), succinonitrile (SN), and a polyimide (PI) film (named ACSE-PI) was fabricated successfully. This is flexible can be stable at temperature 150 °C. Moreover, it exhibits wide electrochemical...

10.1021/acssuschemeng.9b01869 article EN ACS Sustainable Chemistry & Engineering 2019-07-24

High step-up dc–dc converters are widely used in new energy applications such as photovoltaic cell, fuel dc microgrid, etc. Active switched-inductor (ASL) converter has simple operation and low stress on switches. To further increase the voltage gain, some SC (switched-capacitor)/ASL have been proposed recently. However, these SC/ASL oscillation switches, which leads to switches is higher than theoretical value. In this article, a novel high proposed. Compared with other converters, lower...

10.1109/tie.2021.3135611 article EN IEEE Transactions on Industrial Electronics 2021-12-21

Abstract Electrolyte design has become ever more important to enhance the performance of lithium‐ion batteries (LIBs). However, flammability issue and high reactivity conventional electrolytes remain a major problem, especially when LIBs are operated at voltage extreme temperatures. Herein, we novel non‐flammable fluorinated ester electrolyte that enables cycling stability in wide‐temperature variations (e.g., −50 °C–60 °C) superior power capability (fast charge rates up 5.0 C) for...

10.1002/ange.202216189 article EN Angewandte Chemie 2022-12-26

A novel multi-objective robust optimization model of an integrated energy system with hydrogen storage (HIES) considering source–load uncertainty is proposed to promote the low-carbon economy operation a park. Firstly, lowest total cost and carbon emissions are selected as functions. The Pareto front solution set objective function applied by compromise planning, optimal among them obtained maximum–minimum fuzzy method. Furthermore, (RO) approach introduced cope effectively. Finally, it...

10.3390/en17051132 article EN cc-by Energies 2024-02-27

A high step-up integrated coupled inductor-capacitor DC-DC converter for renewable energy applications has been proposed in this paper. Because of relative low output voltage systems, a is necessary. In paper, new configuration given by integrating to get the desire gain. The gain dramatically boosted up using inductor charge capacitor and across switch are clamped inherently. possesses only six components, which makes it uncomplicated more efficient. derivation steady state operation's...

10.1109/access.2020.3048354 article EN cc-by-nc-nd IEEE Access 2020-12-31

Non grid connected wind power hydrogen production technology is of great significance for the large-scale comprehensive utilization energy and accelerating development clean energy. In this paper, an electrolyzer allocation alternate control method non proposed, optimized strategy are combined to predict maximum certain time interval. While retaining required data characteristics, instantaneous fluctuation some eliminated, which provides a reliable basis distribution in alternation array....

10.1016/j.egyr.2022.08.169 article EN cc-by-nc-nd Energy Reports 2022-08-18

Rechargeable lithium-ion batteries (LIBs) dominate the energy market, from electronic devices to electric vehicles, but pursuing greater density remains challenging owing limited electrode capacity. Although increasing cut-off voltage of LIBs (>4.4 V vs. Li/Li+ ) can enhance density, aggravated electrolyte decomposition always leads a severe capacity fading and/or expiry battery. Herein, new durable is reported for high-voltage LIBs. The designed composed mixed linear alkyl carbonate solvent...

10.1002/chem.202001038 article EN Chemistry - A European Journal 2020-04-27

To meet the requirements of high voltage boosting and efficiency, a novel step-up zero transition (ZVT) DC/DC converter based on active switched-inductor (ASL) is proposed. This combines ASL coupled inductor structure, thus can reduce current stress power switch, clamping technology provides for all switches. The inductors realize relatively gain with appropriate turns ratio while magnetic components be integrated in one core. In addition, thanks to leakage inductance, reverse recovery...

10.1109/access.2020.3041004 article EN cc-by-nc-nd IEEE Access 2020-11-27

<italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LLC</i> half-bridge converters have been extensively studied in low power industrial applications. However, the phase shift angle between voltage and current of resonant network makes converter circulation, that is, backflow power. The increase will conduction loss, which restricts improvement efficiency. existing literature often improves from control aspect, greatly increases complexity. To...

10.1109/tie.2021.3076706 article EN IEEE Transactions on Industrial Electronics 2021-05-05

In some areas, the problem of wind and solar power curtailment is prominent. Hydrogen energy has advantage high storage density a long time. Multi-energy hybrid systems including renewable energies, batteries hydrogen are designed to solve this problem. order reduce loss converter, an AC-DC bus proposed. A multi-energy experiment platform established turbine, photovoltaic panels, battery, electrolyzer, tank, fuel cell load. The working characteristics each subsystem tested analyzed....

10.3390/en13205463 article EN cc-by Energies 2020-10-19

This article presents a new phase-shifted full-bridge topology using variable inductor. In this topology, inductor is connected in parallel with near-ideal transformer. The zero-voltage switching (ZVS) of the switches achieved over full-load range current provided by And adjustable reduces conduction losses. Under orthogonal dc magnetic potential, has similar characteristics to saturated inductor, which beneficial reduce loss caused current. Since no series and leakage extremely small,...

10.1109/tie.2023.3277113 article EN IEEE Transactions on Industrial Electronics 2023-06-12

A phase-shifted full-bridge (PSFB) converter is widely used in various applications due to its soft-switching characteristics. However, one of the recognized shortcomings PSFB that it cannot simultaneously have a wide soft switching range and small secondary-side duty cycle loss. The shortcoming hinders high frequency efficiency converter. In this article, change energy demand on external series inductor with input voltage load analyzed. On basis, variable saturation controllable proposed...

10.1109/tie.2021.3118414 article EN IEEE Transactions on Industrial Electronics 2021-10-14

When an input terminal is connected to a solar panel with low voltage level and large power range fluctuation, Boost type CLLC converter controlled by fixed frequency pulse width modulation (PWM) reduces the utilization of PV electric energy, synchronous drive secondary side primary ensures that operates efficiency when duty cycle shifted 0.5. To maximize photovoltaic (PV) energy in generation system improve conversion efficiency, this paper studies high gain soft switching PWM-pulse (PFM)...

10.1109/access.2020.3002334 article EN cc-by IEEE Access 2020-01-01
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