A5101661741- Microgrid Control and Optimization
- Advanced DC-DC Converters
- HVDC Systems and Fault Protection
- Wind Turbine Control Systems
- Islanding Detection in Power Systems
- Power Systems and Renewable Energy
- Impact of Light on Environment and Health
- Advanced optical system design
- Municipal Solid Waste Management
- Multilevel Inverters and Converters
- Recycled Aggregate Concrete Performance
- Innovative Energy Harvesting Technologies
- Sustainable Building Design and Assessment
- Semiconductor Lasers and Optical Devices
- Particle Detector Development and Performance
- Cellular Automata and Applications
- Nonlinear Dynamics and Pattern Formation
Kiel University
2021-2024
China University of Mining and Technology
2020
Variable Energy Cyclotron Centre
2019
Homi Bhabha National Institute
2019
Autonomous University of Sinaloa
2016
Wind farms are susceptible to sub-synchronous oscillation (SSO) issues due the interaction between grid-side converter (GSC) and weak-grid impedance. Integration of battery energy storage system (BESS) damp SSO became popular its ability also provide various grid services. Generally, BESS can be externally integrated at PCC or internally dc-link wind turbine (WT). In case external integration, grid-forming (GFM) control is usually applied GSC. Proper increase GFM damping coefficient...
Power systems are experiencing a rapid and dramatic transformation driven by the massive integration of nondispatchable renewable energy sources, such as wind solar, highly variable loads, electric vehicles air conditioning. This challenges existing grid assets, eventually leading to updating them, which, in turn, increases significantly costs sustainable technologies. electronics is pivotal technology for electrical power processing energies transportation. By means "smart" functionalities,...
Estimation of construction waste generation is critical to management decisions. However, current estimation methods have various limitations (e.g. small samples). To address those limitations, this research conducts an empirical study evaluate the rate different types at stages. In study, from 148 new-built residential sites in China were sorted and weighted on site their rates estimated separately. The results indicated that amount inorganic nonmetallic with a 16.59 kg m-2 was highest...
Voltage-controlled voltage source inverters (VSIs) are generally adopted to achieve seamless transfer between islanded mode and grid-connected in microgrid applications. However, these two operation modes for VSIs feature different output filters, i.e., <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> filters while xmlns:xlink="http://www.w3.org/1999/xlink">LCL</i> mode, thus leading stability performance. In this article, the...
A virtual oscillator (VO) based frequency-locked loop (FLL) is proposed to estimate the grid frequency <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${\omega }_{g}$ </tex-math></inline-formula> and added control algorithm of a synchronous machine (VSM) in order better dampen oscillations power system comprising VSMs. The VO present capacitor used ripple frequency. Similarly, very simple but effective...
A wind farm is susceptible to sub-synchronous oscillation (SSO) issue due the interaction between turbine grid-side converters and grid under weak condition. By integrating grid-forming (GFM) controlled battery energy storage system (BESS) into at common coupling point (PCC), SSO might be suppressed. Impedance analysis indicates that increasing damping coefficient of GFM control helps better suppress SSO. However, will increase droop simultaneously, leading higher power peak frequency...
Grid-forming (GFM) converters, such as virtual synchronous generators (VSGs), behave voltage sources behind a reactance within specified frequency range. Therefore, solutions to limit the rapid growth of converter output current, which may cause over-current tripping during grid faults, are necessary. One effective solution is use outer dual-loop and current control so that limitation can be realized by saturating reference. In condition, electrical power (EP) VSG calculated either with or...
Voltage controlled voltage source converters (VSCs) have been widely applied in microgrids, uninterruptible power sources, smart transformer and 400 Hz ground units for airplanes, etc. An LC filter is generally adopted to attenuate high frequency switching harmonic improve the qualities of output current grid or loads. Nevertheless, VSCs trade-off between stability characteristic ability harmonics suppression when a single-loop control method adopted. In general, resonant ω <inf...