A5100727762- Microgrid Control and Optimization
- Multilevel Inverters and Converters
- Photovoltaic System Optimization Techniques
- Power Systems and Renewable Energy
- Metal and Thin Film Mechanics
- HVDC Systems and Fault Protection
- solar cell performance optimization
- High-Voltage Power Transmission Systems
- Corrosion Behavior and Inhibition
- Advanced DC-DC Converters
- Advanced Battery Technologies Research
- Smart Grid Energy Management
- Epoxy Resin Curing Processes
- Electrostatic Discharge in Electronics
- Concrete Corrosion and Durability
- Materials Engineering and Processing
- Silicon Carbide Semiconductor Technologies
- Power Systems Fault Detection
- Optimal Power Flow Distribution
- Copper Interconnects and Reliability
- Power Quality and Harmonics
- Smart Grid and Power Systems
- Islanding Detection in Power Systems
- Frequency Control in Power Systems
- Electrodeposition and Electroless Coatings
North China Electric Power University
2014-2025
Shihezi University
2020-2021
Jiangsu University
2011-2013
A hierarchical control scheme is proposed for optimal power flow to minimize loss in a hybrid multiterminal HVDC (hybrid-MTDC) transmission system. In this scheme, the lower level droop control, which enables fast response fluctuation and ensures stable DC voltage, upper optimization minimizes losses during operation of hybrid-MTDC solves contradiction between minimizing preventing commutation failure. 6-terminal also designed simulated PSCAD according potential demand wind farms integration...
Modular multilevel converter (MMC)-based multiterminal HVdc (MTdc) transmission is a favorable option for asynchronously interconnecting several weak ac systems. This paper investigates the potential resonance of such an MMC-MTdc system excited by background harmonics in any MMC's systems and undesirable transfer these to remote First, harmonic rule across one MMC established using phase leg voltage analysis it then used develop equivalent circuit model system. investigate mechanism ac-side...
Impedance-based stability criterion is effective for analyzing the oscillation phenomenon in modular multilevel converter-based high-voltage DC (MMC-HVDC) transmission system, and modeling MMC impedance critical step. However, few papers have modeled with comprehensive consideration of time delay outer-loop control at same time. The stabilization strategies to improve system are not considered during modeling, influences strategy on analyzed mathematically, either. In this article, an...
The extensive use of power electronic devices has led to supraharmonic issues.The concept harmonic groups been widely used minimize energy leakage. Moreover, the distribution supraharmonics is related switching frequency sources. Given diversity frequencies and emissions distribution, need be flexibly adjusted. A identification method based on correlation analysis proposed in this work. In addition, sources are identified through a measurement point. Furthermore, flexible group which...
Abstract Aiming at the problem that grid‐connected power fluctuation of photovoltaic system affects stability grid operation, a multivariable fuzzy coordinated control strategy for based on super‐capacitor and battery is proposed. First, controller established estimated current energy state charge battery. The relational matrix used to introduce interaction effects inputs into control, relation by multiplying with weights, time constant low‐pass filter adjusted coordinate distribution...
An improved engineering model of silicon solar cell is proposed, which uses only four electrical parameters under standard test conditions provided by manufactures. Simulation and experimental results show that the error was 6 percent below for various combinations radiation temperature its accuracy sufficient most practical cases.
Purpose The anticorrosion coatings used in marine and atmospheric environment are subjected to many environmental factors. And the aging failure has been puzzling researchers. purpose of this study is find correlation between initial epoxy typical Design/methodology/approach were a one-year exposure three atmospheres. Meanwhile, principal component analysis, linear regression Spearman gray analysis applied quantify characteristics establish correlations with coating aging. Findings results...
This paper proposes a novel load converter operating in high frequency AC distributed power system, where controllable transformer is proposed to control the energy transfer and regulate voltage. The can guarantee tight regulation simplify construction of system. Detailed theoretical analysis presented. To verify feasibility with transformer, switching 100 kHz, an input voltage 15 V (280 kHz), built up. Simulation experimental results are presented for evaluation.
IGCT has a broad application prospects in high power conversion such as flexible DC transmission due to its characteristics of voltage and large capacity. Compared with IGBT it current level 4.5kV/4kA slope resistance is less than IGBT’s. In addition, the di/dt snubber circuit, IGCT’s opening loss will be reduced. Because improvement performance, IGCT-applied three-level converter have some new characteristics, so necessary model IGCT-type converter. Based on piecewise linear curve fitting...
Aiming at the problem that grid-connected power fluctuation of PV system affects stability grid operation, a hybrid energy storage strategy based on supercapacitor-battery is proposed to suppress photovoltaic system. The low-pass filtering method used determine suppressed goal supercapacitor, high-frequency stabilized by and low-frequency battery. Thereby achieve purpose rational allocation deviation between different mediums. Secondly, small-signal model Buck/Boost bidirectional converter...