A5100358692- Microgrid Control and Optimization
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Energy Harvesting in Wireless Networks
- HVDC Systems and Fault Protection
- Wireless Power Transfer Systems
- Power Systems and Renewable Energy
- Advanced Battery Technologies Research
- Advanced Algorithms and Applications
- High-Voltage Power Transmission Systems
- Advanced Sensor and Control Systems
- Islanding Detection in Power Systems
- Magnetic Bearings and Levitation Dynamics
- Silicon Carbide Semiconductor Technologies
- Simulation and Modeling Applications
- Geomechanics and Mining Engineering
- Vibration and Dynamic Analysis
- Thermal Analysis in Power Transmission
- Fire dynamics and safety research
- Educational Technology and Pedagogy
- Innovative Energy Harvesting Technologies
- Advanced Sensor and Energy Harvesting Materials
- Rock Mechanics and Modeling
- Electric Motor Design and Analysis
- Piezoelectric Actuators and Control
Hunan University
2016-2025
Nanjing University of Aeronautics and Astronautics
2022-2025
Fudan University
2024-2025
Yiwu Science and Technology Research Institute
2025
Guangdong Medical College
2023-2024
Huaihua University
2024
Zhejiang University of Technology
2023
University of Jinan
2023
Guilin University of Technology
2023
National University of Defense Technology
2022
A 13.56 MHz wireless power transfer system with a 1X/2X reconfigurable resonant regulating (R <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> ) rectifier and control for biomedical implants is presented. Output voltage regulation achieved through two mechanisms: (1) local PWM loop at the secondary side controls duty cycle of mode-switching between 1X 2X modes; (2) global obtains information from send it back to primary channel adjusts...
In cascaded-type microgrid, the synchronization and power balance of distributed generators become two new issues that needs to be addressed urgently. To end, an f-P/Q droop control is proposed in this letter, its stability analyzed as well. This capable achieve under both resistive-inductive resistive-capacitive loads autonomously. Compared with inverse factor control, obvious advantage consists extending scope application. Finally, feasibility method verified by simulation results.
Releasing pre-strained two-dimensional nanomembranes to assemble on-chip three-dimensional devices is crucial for upcoming advanced electronic and optoelectronic applications. However, the release process affected by many unclear factors, hindering transition from laboratory industrial Here, we propose a quasistatic multilevel finite element modeling structures offer verification results various bilayer nanomembranes. Take Si/Cr nanomembrane as an example, confirm that structural formation...
The recently emerged remote epitaxy technique, utilizing 2D materials (mostly graphene) as interlayers between the epilayer and substrate, enables exfoliation of crystalline nanomembranes from expanding range potential device applications. However, has been so far applied to a limited material systems, owing need stringent growth conditions avoid graphene damaging, therefore remained challenging for synthesis oxide nanomembranes. Here, we demonstrate epitaxial an nanomembrane (vanadium...
Vienna rectifier is a kind of power converter with complicated operating constraints. Thus, it difficult to control conventional strategies, especially during transients or under low factor operation. This study proposes hybrid scheme dual loops for the three-phase rectifier. In outer loop, proportional-integral controller designed regulate dc-link voltage and input reactive power. And in inner finite set model predictive utilized currents maintain neutral point balance. To reduce costs, an...
Wireless power transfer has a broad range of applications ranging from mobile phone chargers to biomedical implants. For cochlear implants [1] and retinal prostheses [2], having miniaturized form factor being battery-less are highly desirable. Such devices require real-time in the 10 100mW [3], as human tissue specific absorption rate (SAR) increases with frequency, inductively-coupled links that operate at 13.56MHz or lower ISM bands commonly used, shown Fig. 4.2.1. However, transmission...
A new topology based on indirect matrix converter (IMC) is proposed to enhance the input reactive power capability. This consists of a conventional IMC and an auxiliary switching network (ASN), which connected dc-link in parallel. With aid ASN, implicit current source converter-based static synchronous compensator can be embedded into IMC, lays foundation for control. Based topology, two modulation schemes are presented, formations output voltage decoupled both them. To minimize loss improve...
This paper proposes a novel topology of voltage balance circuit for ALL-DC offshore wind farm with series-connected turbine. In the proposed topology, adjacent turbines are connected by in parallel, and these can achieve both maximum power point tracking terminal voltages when speeds unequal. With current compensation circuit, this ensure normal operation even if some outage. Furthermore, double loop controller is designed, which does not require communication among turbines, stability...
A new method using adaptive sliding mode back-stepping control is presented for indirect four-leg matrix converter. It robust against uncertain loads and input disturbance due to the interaction between filter The currents are analyzed under unbalanced nonlinear loads, which helps design a proper attenuate harmonics flowing into power grid. varying period carrier-based modulation introduced converter makes it easier implement. Both simulations experimental results verify feasibility of...
The stability of a matrix converter is investigated in both motor mode and generator mode. Inspired by the impedance ratio criterion, general constructive method proposed to stabilize converter. Based on analysis, it possible change admittance modifying output reference voltage rectifier modulation vector according method. As result, instability which caused negative could be eliminated. Meanwhile, regions are enlarged. Furthermore, underlying principles stated detail several instructive...
To expand the matrix converter application in high power area, a new three-level diode-clamped topology as well related multicarrier-based modulation scheme is proposed. The inherits features from conventional multilevel inverter and indirect converter, which composed of cascaded-rectifier inverter. proposed can overcome voltage rating limits semiconductors for high-voltage applications to some extent. Meanwhile, except general advantages, such bidirectional flow, sinusoidal input output...
The Class-D power amplifier (PA) is widely used to drive the primary coil of wireless transfer (WPT) systems. Due coupling and loading variations, PA required adjust transmission quickly, precisely, efficiently. In this brief, a switching-frequency-modulation-based Sigma-Delta (ΣΔ) modulator proposed for driving with minimal hardware overhead. control PA's output voltage at fundamental tone proved be linear. Using ΣΔ modulator, WPT system designed fast loop regulation receiver secondary...
Based on the equivalency between full-bridge indirect matrix converters (MCs) and 3 × 1modular MCs, carrier-based modulation strategy is first tailored for 3×1-modular MC. It can be directly expanded to 3×N-modular MC, but in order improve power quality, phase-shifted (PS) method phase disposition (PD) are proposed. The former suitable MC with any multiwinding transformers (including phase-shifting transformers). Moreover, latter only applicable ordinary transformers. PD has advantages over...
In view of the limitations vortex generators with polarization dependence at present, we propose a plasmonic generator composed rectangular holes etched in silver film, which optical can be generated under arbitrary linearly polarized light illumination. Two sets are arranged equidistantly on circle and rotate postulate directions. Theoretical analysis provides design principle for generator, numerical simulations give guidance designating parameters. Experimental measurements verify...
Fast and reliable fault diagnosis is essential for induction motor (IM) drive systems with high-reliability requirements. In this article, we propose a robust open-switch fault-diagnosis method based on the common-mode voltages of inverter in IM-drive systems. This makes full use characteristics voltages. First, calculated (CCMVs) are equal to each other under normal operating conditions CCMVs represent behaviors conditions. Second, average voltage degree freedom modulation inverter. Based...
This article proposed a current-sensorless control scheme for the single-phase uninterruptible power supply (UPS) inverter under nonlinear load. Different from existing literature, information of load current can be obtained by designed adaptive laws. It is meaningful system's security and reliability. Under assumption that periodic ideal-independent source, Fourier series in trigonometric form expanded to model unknown disturbance current. The observer-based feedback rate update laws are...
Abstract Silicon nanomembranes, an emerging material with ultrathin thickness, combine the electrical properties of semiconductors flexibility that bulk materials lack. These nanomembranes can impart enhanced functionality to devices, supporting development needs for next‐generation technologies “more‐than‐Moore” Law. In recent years, as research fabrication techniques and fundamental principles have advanced, focus silicon nanomembrane studies has evolved from preparation component...
Owing to the direct coupling between input and output of matrix converter, abnormal power supply could disturb voltage easily. In this study, three modulation strategies for converter based on mathematical construction are proposed under unbalanced conditions. The developed rectifier inverter vectors in different ways. By regulating appropriately index vector, voltages can maintain sinusoidal balanced. result currents. Moreover, analytical solutions currents with methods presented,...