A5077163801- Microgrid Control and Optimization
- Wind Turbine Control Systems
- HVDC Systems and Fault Protection
- Power Systems and Renewable Energy
- Radio Frequency Integrated Circuit Design
- Advanced machining processes and optimization
- High-Voltage Power Transmission Systems
- Advanced Surface Polishing Techniques
- Multilevel Inverters and Converters
- Smart Grid and Power Systems
- Advanced Power Amplifier Design
- Electric Vehicles and Infrastructure
- Islanding Detection in Power Systems
- Gear and Bearing Dynamics Analysis
- Analog and Mixed-Signal Circuit Design
- Advanced DC-DC Converters
- Geoscience and Mining Technology
- Advanced Algorithms and Applications
- Power System Optimization and Stability
- Advanced Numerical Analysis Techniques
- Advanced Measurement and Metrology Techniques
- Tribology and Lubrication Engineering
- Iterative Learning Control Systems
- Power Systems and Technologies
- Aerospace Engineering and Control Systems
University of Electronic Science and Technology of China
2010-2025
Beijing Institute of Technology
2025
Xi'an Jiaotong University
2015-2024
Xi'an University of Architecture and Technology
2024
Institute of Mechanics
2024
Southwest Jiaotong University
2022-2024
Siemens (China)
2023-2024
Qingdao University of Technology
2024
State Grid Corporation of China (China)
2010-2023
Jinggangshan University
2022
Phosphogypsum, a byproduct generated during the production of chemical fertilizers, can pose significant environmental threat when not managed appropriately. This study endeavors to explore potential repurposing phosphogypsum by incorporating it into cement-stabilized base asphalt concrete pavement. We conducted an in-depth optimized scheme using specific engineering project as case study. substitutes for part cement in original base, creating mixed material (CSPM) road construction. The...
Distributed grid and microgrid are becoming increasingly important in power system nowadays. In these grids, reactive compensations harmonic current suppression commonly employed to improve quality. For the doubly fed induction generator (DFIG), high frequency resonance (HFR) will occur when it is connected parallel compensation grids. When DFIG with compensation, ranges of HFR harmonics may have intersections. this paper, some cases for damping suppressor given reveal that coupling between...
Using the voltage source converter (VSC) to compensate for harmonics at point of common coupling (PCC) is beneficial power supply quality in regional grid. However, it leads a significant deterioration output current VSC. This article aims develop design principle and realization method impedance reshaping VSC used compensating with minimal sacrifice quality. By revealing constraint between PCC VSC, proposed. indicates that phase should be identical grid frequency harmonics. Hence, an...
This study investigates the mechanism of temporary capture about Moon, originating from periodic orbits or following bounce-back trajectories associated to libration point regime Sun-Earth system. The primary objective is analyze maneuvers required for and explore opportunities natural in Earth-Moon system.We begin by defining a set incorporating eccentricity, identifying maximum eccentricity at perigee with respect while satisfying revolution constraint. Then, using an appropiate expansion,...
Compensating voltage harmonics is the advanced target for doubly-fed induction generator under harmonically distorted grid, which also an essential function in process that wind power generation system evolves into supporting or regulating grid from adapting grid. To overcome weakness of existing methods only can compensate with pre-known frequency, a modified derivation controller designed to fixed and unfixed frequencies this paper. This article firstly investigates critical factors affect...
Suppressing current harmonics is an essential capability of the grid-tied doubly-fed induction generator (DFIG). For weak grid tied DFIG, suppression accompanied by compromise voltage at point common coupling (PCC). Currently, effect harmonic focused concern. But, potential quality optimization neglected. The key to solving this issue find reconcilability conflict between and quality. Therefore, paper firstly analyzes relationship PCC from perspective impedance, then investigates optimal...
High-voltage direct current (HVDC) transmission is a crucial way to solve the reverse distribution of clean energy and loads. The line commutated converter-based HVDC (LCC-HVDC) has become vital structure for due its high technological maturity economic advantages. During DC fault LCC-HVDC, such as commutation failure, reactive power regulation AC grid always lags control process, causing overvoltage in sending grid, which brings off-grid risk wind generation based on electronic devices....
This paper presents a stator harmonic current suppression method for doubly fed induction generator (DFIG) under the distorted grid voltage with consideration of integer harmonics and interharmonics. In proposed control strategy, incomplete derivation controller instead resonant or repetitive is employed to eliminate negative impacts on caused by voltage. approach can provide both good dynamic response strong rejection ability against voltages fixed frequency interharmonic unfixed frequency....
This paper presents an adaptive repetitive control method for torque ripple suppression of the doubly fed induction generator (DFIG) system connected to a dc grid considering stator frequency variation. Since DFIG is diode bridge directly, should be controlled additionally. A novel frequency-locked loop (FLL) based on second-order generalized integrator (SOGI) proposed acquiring frequency. The fundamental voltage obtained by multi-SOGI. Thus, low-pass filter can avoided, which improve...
When doubly fed induction generator (DFIG) system connects to the parallel compensation grid with harmonics, high-frequency resonances (HFR) occur due insufficient phase margin, meanwhile output power quality of DFIG is degraded harmonics. For solving two problems simultaneously, collaborative control strategy which allots different targets rotor side converter (RSC) and (GSC) proposed in this article, HFR damping controller planted at RSC or GSC, while other will be responsible for...
As of now, the issue High Frequency Resonance (HFR) in Doubly Fed Induction Generator (DFIG) with weak ac grid have been widely investigated. However, due to influence time delay control VSC-HVSC, HFR can occur interconnected system where VSC-HVDC connects wind farm as well. Based on impedance model DFIG and deduced VSC-HVDC, this paper investigates occurrence mechanism when based farm, analyzes that influences stability system. Further, avoid HFR, article proposes a damping method an...
An enhanced time-domain simulation method of cutter/workpiece dynamic engagement during milling process is proposed in this article, which comprehensively considers the effect multi-order modal characteristics cutter system and runout including offset inclination. Based on displacement response, article further presents machined surface reconstruction algorithm evaluation for form error. This research systematically studies compares calculation accuracy between other previous three kinds...
High-frequency resonances (HFR) is a subsistent issue in doubly fed induction generator (DFIG) system when it connects to parallel compensation grid, due the insufficient phase margin between impedance of DFIG and grid. The occurrence mechanism damping methods for HFR rotor current controlled have been investigated existing literatures, while appearance solutions stator (SCC-DFIG) not studied yet. Based on SCC-DFIG, this article analyzes SCC-DFIG. Thereby, an reshaping method based voltage...
The line commutated converter (LCC)-based high voltage direct current (HVDC) transmission system is an effective scheme for long-distance of wind power. Commutation failure a common LCC-HVDC system. During the commutation failure, overvoltage sending alternating (ac) grid will occur to disconnect farm from utility and limit capacity It necessary suppress ac under increase In this article, mathematical model transient peak value established. can quantitatively analyze influence reactive power...
A general calibration method of cutter runout and specific cutting force coefficients (SCFCs) for flat-end is proposed in this paper, a high accuracy prediction during peripheral milling established. In the runout, bottom-edge effect, actual feedrate with limitation large tool path curvature are concerned comprehensively. First, based on trochoid motion, tooth trajectory model built up an analytical instantaneous uncut chip thickness (IUCT) put forward describing cutter/workpiece engagement...