A5100622376- Wireless Power Transfer Systems
- Energy Harvesting in Wireless Networks
- Advanced Battery Technologies Research
- Smart Grid and Power Systems
- High-Voltage Power Transmission Systems
- Electric Power System Optimization
- Electromagnetic Compatibility and Noise Suppression
- Power Systems Fault Detection
- Electromagnetic Compatibility and Measurements
- RFID technology advancements
- Optimal Power Flow Distribution
- Electrostatic Discharge in Electronics
- Icing and De-icing Technologies
- Smart Grid Energy Management
- Power System Optimization and Stability
- Advanced Computational Techniques and Applications
- Smart Grid Security and Resilience
- Innovative Energy Harvesting Technologies
- Magnetic Field Sensors Techniques
- Radio Frequency Integrated Circuit Design
- HVDC Systems and Fault Protection
- Power System Reliability and Maintenance
- Advanced Power Amplifier Design
- Indoor and Outdoor Localization Technologies
- Wind Turbine Control Systems
Zhejiang University
2018-2024
Shanghai University
2024
State Grid Corporation of China (China)
2022-2024
Suzhou University of Science and Technology
2022
China Power Engineering Consulting Group (China)
2022
PowerChina (China)
2019-2022
Hainan Normal University
2022
Nanjing Tech University
2020
China Southern Power Grid (China)
2019
State Grid Hunan Electric Power Company Limited
2019
High-power wireless power transfer (WPT) is an attractive option for fast charging of electric vehicles (EVs), but the capability WPT system limited by devices and resonant elements. This paper presents a scalable modular four-channel EV charging. Owing to design, achieves 50 kW output with low-power Silicon devices, reliability robustness are significantly improved. Through coil structure placement magnetic coupler inter-channel decoupling, eliminating interference between channels,...
To commercialize wirelesselectric vehicle charging (WEVC), three critical issues must be resolved: communication between the assembly (VA) and ground (GA), metal object detection (MOD) on GA coil, position (PD) of VA. This paper proposes a comprehensive system that integrates MOD PD with VA-GA near-field (NFC). A common high-frequency aided carrier is used not only for NFC, but also PD. In addition, an array dual-purpose coils proposed as sensor As result, functions listed above share...
The recently-proposed multi-dimensional digital predistortion (DPD) technique is experimentally investigated in terms of nonlinearity order, memory length, oversampling rate, digital-to-analog conversion resolution, carrier frequency dependence and RF input power tolerance, both directly-modulated externally-modulated multi-band radio-over-fiber (RoF) systems. Similar characteristics the predistorter are identified RoF experimental results suggest implementing a memory-free involving orders...
This paper describes a novel scheme of metal gate integration to achieve precise threshold voltage (VTH) control and multiple VTH, by using composition ion implantation (I/I) into work function (WFM). Moreover, WFM full fill is demonstrated with in situ barrier satisfy the conductance requirement sub-10 nm node gate.
In a simultaneous wireless power and data transfer (SWPDT) system using common coils, achieving high-speed communication in high-power charging systems is challenging due to interference on communication. Based high-frequency carrier-based SWPDT (HFDC-SWPDT) technology, this paper proposes an orthogonal-frequency (OF-SWPDT) method minimize where the carrier frequency orthogonal its harmonics. addition, guard band inserted between spectra of harmonics order further separate spectra. Thus,...
Microelectromechanical system (MEMS) Fabry-Perot fiber-integrated pressure sensor exhibits a compact size, intrinsic safety, and high precision measurement. Here, MEMS interferometer is presented. The fabricated using standard microfabrication process with uniformity of 80%. enables measurement range 0–10 MPa full-scale nonlinearity error 1.44% repeatability 2.14%. A limit detection 1.74 kPa resolution 0.017% are achieved. comparative experiment conducted to verify the wavelength tracking...
Smart electric power grid, or in short, smart consists a large number of complex computerized electronic devices, such as meters, appliances, renewable energy resources and efficient resources. Some these devices can be low quality, especially for start-up grid companies developing countries; due to the quantity those faulty is usually much greater than available maintenance workers. On one hand, are required fixed soonest possible avoid economic losses. other because limitation on labour...
The high-frequency characteristics of the common-mode inductor greatly influences performance Electromagnetic Interference (EMI) filters. In order to design an effective EMI filter, it is necessary accurately model inductor. This paper proposes improved Foster model, which can more fully inductor, especially in range. Analysis and parameters are provided. curve fitting impedance for proposed compared with that a traditional one. By applying this technique filter 2.4 kW Power Factor...
A multi-dimensional crest factor reduction (MD-CFR) technique is proposed to improve the performance and efficiency of multi-band radio-over-fiber (RoF) links. Cooperating with digital predistortion (MD-DPD), MD-CFR increases both directly-modulated externally-modulated RoF links, in terms error vector magnitude (EVM) adjacent channel power ratio (ACPR). For link, more than 5 dB output ACPR obtained, EVMs are reduced from 11.83% 12.47% 7.51% 7.26% for two bands respectively, while only a...
Reliable data communication between primary side and secondary is necessary in feedback control of wireless electric vehicle (EV) charging system. Simultaneous power transmission (SWPDT) technology attractive because the are transferred wirelessly a common inductive link, which more straightforward cost effective. Using SWPDT with bidirectional full-duplex capability, WPT system proposed this paper. Meanwhile, simple protocol designed. Finally, 3.3kW prototype setup realized, verifies...
A novel long distance multi-coil wireless power transfer (WPT) system with constant voltage (CV) output characteristic is designed and optimized in this paper. The CV WPT mathematical model systematically analyzed summarized, the operating frequency can be calculating by model. Through state deconstruction analysis, paper has between adjacent coils on transmission efficiency of at a distance. Finally, experimental results are consistent theoretical maximum 54.2% under 1.1 m.
Current measurement is a key part of the monitoring system for power transmission lines. Compared with conventional current sensor, distributed, self-powered and contactless sensor has great advantages safety reliability. By integrating sensing function energy harvesting transformer (CT), time-multiplexed wireless that can measure line presented in this paper. Two operating modes CT, including mode mode, are analyzed detail. Through design mode-switching circuit, circuit isolated using only...
The electrical sensing elements used in the traditional XBT (Expendable Bathythermograph) have problems such as low sensitivity and slow response time, it is difficult to overcome complex marine environment using time-depth formula. In this paper, an ocean temperature depth sensor based on brass diaphragm liquid filling designed. stress time of FBGs with different lengths heat transfer materials are compared, found that a fast 51 ms can be obtained by GaInSn for sensing. center deflection...
Feedback control and online positioning for wireless power transfer (WPT) systems are two important issues, which essential to the security, efficiency stability of WPT systems. An magnetic system (OMPS) using four auxiliary coils was proposed previously achieve precise coils. In this paper, a novel data-enabled estimation feedback method optimized OMPS is proposed. The method, makes full use voltage magnitudes coils, uses neural network (NN) models parameter eliminates need communication...
China's low-voltage transmission lines are mostly three-phase four-wire power supply networks. Due to the large number of single-phase users which dispersedly located, there different levels load imbalance problems in most distribution areas. With improvement national economy, electricity consumption at grassroots level has increased, and problem unbalanced loads grid become increasingly prominent. The article introduces a product can handle area. It quickly accurately detect unbalance...
This paper considers that wind turbines participate in Primary Frequency Regulation (PFR) by deloaded operation mode together with conventional units. At the same time, it further taps fast start-up capability of power resources and warm hot thermal units are also considered as part intra-day emergency reserve. Based on above, this proposes an dispatch model considering coordination both steady state transient state, which evaluates frequency security system a variety high-risk stochastic...
According to the requirements of smart substation metering system, a digital interface based on IEC 61850 specification is given, then functional model merging unit discussed. Meanwhile, according actual situation, author proposes an analog output interface, in order fit with traditional secondary equipment. Then solution TMS320F28335 control platform described, for which voltage module software and hardware circuits are discussed detail. The experimental data shows that proposed can meet...
In order to solve the existing artificial meter reading watt-hour industry is still slow and inventory of common problems, using uhf radio frequency identification (RFID) technology intelligent depth fusion, which has a one-time read multiple tags, distance, high transmission rate, reliability, etc, while retaining original asset management functions, in ensure RFID minimum impact on operation meter, proposed improve stability electric system working at same time, this paper designs...
Recent years, various types of reactive power resources are installed in the grid. Both complexity and demand for better voltage regulation increasing. AVC system is most famous system-wide Q/V control which consists PVC, SVC TVC. controls voltages buses within a zone by sending individual set-point values to PVCs belonging zone. Traditional assumes that decoupled each PVC can reach value during period. However, proof this paper reveals fact if there strongly coupled zone, competition...
Transient voltage stability region boundary (TVSRB) in the parameter space corresponds to a set of system variable parameters, under which transient trajectory key bus marginally meets criterion stability. This paper proposes method for polynomial approximating TVSRB based on collocation method. Firstly, an improved index (TVSI) is proposed practical stability, varies smoothly rather binarily as parameters crossing and hence can be better approximated by polynomials. Secondly, relationship...