A5049589109- Iterative Learning Control Systems
- Adaptive Control of Nonlinear Systems
- High-Voltage Power Transmission Systems
- HVDC Systems and Fault Protection
- Microgrid Control and Optimization
- Advanced machining processes and optimization
- Power System Optimization and Stability
- Electrical Fault Detection and Protection
- High voltage insulation and dielectric phenomena
- Robotic Path Planning Algorithms
- Control and Dynamics of Mobile Robots
- Advanced Control Systems Optimization
- Advanced Surface Polishing Techniques
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Advanced Control Systems Design
- Lightning and Electromagnetic Phenomena
North University of China
2021-2022
Shanghai Electric (China)
2018
General Electric (United States)
2014
North China Electric Power University
2013
China Electric Power Research Institute
2013
This article presents a modified active-disturbance-rejection control (ADRC) combined with sliding mode (SMC) regarding the tracking problems for plants unmatched uncertainty. The proposed (ADRC-SM) employs reduced-order extended state observer (ESO) estimating various uncertainties of system in time, including and matched uncertainties. Meanwhile, novel reaching law SMC was designed by using cycloid function as main controller ADRC, which ensures robustness uncertain system. Due to ESO...
Aiming at the trajectory tracking problem with unknown uncertainties, a novel controller composed of proportional-integral-differential sliding mode surface (PIDSM) and variable gain hyperbolic reaching law is proposed. A PID-type an inverse integral terminal term proposed, which has advantages global convergence (ISM) finite time (TSM), control effect significantly improved. Then, approach proposed to solve approaching velocity problem. The can guarantee different velocities distances from...
This paper proposed a generalized modeling methodology based on the PWM Switch Model for steady-state analysis and dynamic performance investigation of single phase inverter. The motivation, algorithm are presented. developed models verified against switching both half bridge dual buck inverter in time domain to demonstrate effectiveness methodology. Input impedance is also obtained stability cascaded two-stage power system.
For transient stability analysis, the direct method runs fast but with poor accuracy due to over-simplification of component models; time-domain simulation is accurate time-consuming and thus not suitable for online application.In this paper, results Potential Energy Boundary Surface (PEBS) applied on examples actual system calculation are analyzed, range error discussed.Via complementarity method, a new hybrid proposed: in critical clearing time (CCT), result used as initial value then...
The paper studies the control problem for nonlinear uncertain systems with multiple channel uncertainties, and presents manifold of a class second-order including unmatched matched disturbances, which is mainly found in flexible components. system model first transformed into Brunovsky form, where uncertainties are lumped as one term-equivalent total effects. A backstepping united reduced-order ESO design proposed, intermediate variables need not be measurable, only output required...
Abstract Variable speed pumped storage unit is an energy device with excellent operation and regulation performance. For the grid-related performance laboratory testing of AC excitation controller variable integrated into power grid, this paper studied methods based on actual station data, established semi-physical hardware in loop simulation platform RTDS its function boards, proposed key items for test. The results verified functions platform.
In this paper, application of a portable instrument to gain impulse grounding impedance (IGI) characteristics for device (GD) ultra-high-voltage (U11V) 1000 kV transmission towers is introduced. The test currents 8/20 μs and 10/350 were chosen as the injection signal sources respectively, while response transient voltage waveforms in time domain simultaneously measured. Then corresponding IGI can be calculated with processing current waveforms. order obtain whole process, resistance (TGRT)...