In this paper, a multilayer control is proposed for inverters that are able to operate in parallel without intercommunications. The first layer an improved droop method introduces power proportional terms into the conventional scheme, letting both active and reactive be shared among inverters. second designed compensate voltage deviations caused by aforementioned control, thus improving load-voltage regulation of system. third quasi-synchronization roughly adjusts angle inverter close common...

Recently, the DeepSeek series of models, leveraging their exceptional reasoning capabilities and open-source strategy, is reshaping global AI landscape. Despite these advantages, they exhibit significant safety deficiencies. Research conducted by Robust Intelligence, a subsidiary Cisco, in collaboration with University Pennsylvania, revealed that DeepSeek-R1 has 100\% attack success rate when processing harmful prompts. Additionally, multiple companies research institutions have confirmed...

Anapole mode is excited by the destructive interference between toroidal- and electric-dipole moments, resulting in a high-quality (Q) factor. In this paper, we designed high-Q-factor metamaterial that shows anapole behaviors terahertz region. Through introduction of graphene, condition disturbed tunability can be realized. This pattern reflects brilliant performance which frequency movements above 250 GHz per 0.1 eV verified. Ingenious adjustment position graphene offers possibility...

A distributed control for pulsewidth modulation inverters in parallel operation to feed an asynchronous motor is proposed. The phase angle of the sinusoidal reference each inverter represented as a square signal and shared among pre-synchronized cycle-by-cycle with other. And then current sharing regulated by introducing circulating into mild adjustment references. All sense are embedded redundant power system achieved. prototype built experimental results given verify

A hybrid three-phase ac/dc power system, which is composed of a diode-bridge rectifier and two-stage ac-dc converter, proposed in this article, for low-frequency pulsed load applications. With the decoupled with average ac source, while high-frequency harmonics induced by compensated converter. Fault-tolerant operation achieved four possible modes system. Therefore, high reliability these redundant modes. Operation principles, control methods, design considerations system are analyzed...

A dual-dc output three-phase three-level ac–dc converter is proposed for low-frequency pulsed power decoupling applications. One of the dc connected to load, whereas other one used as port and capacitor. The voltage can vary in a wide range reduce value volume buck/boost employed interface with load. modified space vector pulsewidth modulation strategy converter, based on which independent regulation two outputs achieved. steady-state directly fed load single conversion stage, low frequency...

Inspired by the development of terahertz (THz) technology, demand for THz sensors with high quality and sensitivity is significantly increasing. In this study, one-dimensional metallic metamaterials based on cavity mode resonance are proposed sensing applications in regime. Owing to strong energy concentration cavity, a factor were obtained. Thus, presented device not only achieved narrowband selective absorption but also exhibited excellent refractive index sensitivity, figure merit,...

An electromagnetically induced transparency (EIT) analog in hybrid metal–dielectric metamaterials is proposed and numerically demonstrated the terahertz region. The EIT consists of a metal bar silicon disk (SD) to support localized surface plasmon resonance anapole modes. A high transmission EIT-like optical response was achieved with Q-factor ∼250 as interpreted by destructive interference between these two modes through metamaterial. influences background index SD radius on metamaterial...

A interleaved Buck converter with wide input voltage range and critical conduction mode based on coupled inductor is studied. Due to the limitation of high-frequency filter size power module, flux distribution characteristics its influence volume loss magnetic components are deeply With ultra-thin low as objective, a four-pole planar structure PCB winding proposed. Meanwhile, design method parameters given well example. Finally, an experimental prototype height only 7mm, density...

The development of UHV transmission technology brings longer distance, higher towers and more complicated terrain along the lines, which make shunt performance line under lightning stroke diversiform compared to conventional ones. This paper discusses effects factors, such as current waveform, footing resistance, span etc., on coefficient DC is great significance for setting out lightning-proof measures well location point. It referred that waveform especially its front time tower resistance...

To investigate the inhibitory effect of bardoxolone methyl (CDDO-Me) on activation NLRP3 inflammasome and its mechanism for alleviating acute liver injury (ALI).

A multilayer control is proposed for inverters with wireless parallel operation in this paper. The embedded every inverter respectively and consists of three layers. first layer based on an improved droop method, which shares the active reactive power each module by adjusting phase amplitude output voltage respectively. second to compensate caused thus improve load regulation performance inverter. third limits deviation between shared ac bus order ensure all paralleled keeping phase....

A decoupled parallel control of PWM inverters for AC motor drives is proposed in this paper. The sinusoidal reference synchronization, with variable frequency, and the load current sharing are by a local feedback. At first, phase angle each inverter represented as square signal shared among inverters. And mentioned pre-synchronized beyond regulation. Then regulated introducing circulating into adjustment references. system simplified both easy implementation good performance. Operational...

Forward Flyback converter, having few component count, soft switching feature and high conversion efficiency, caught the eyes from both academia industries. Several control strategies, such as critical conduction mode, fixed off-time so on, have been proposed to realize either or efficiency. However, when converter operates at full load range, not a single strategy can achieve efficiency limit frequency range. The paper hybrid take advantages of different methods in order overall while...

In order to achieve an efficient pulsed power compensation for the ac-sourced system, a multifunctional compensator (MFC) of modified T-type semi-two-stage converter is proposed in this article. The decoupling capacitor parallel with one dividing capacitors three-level ac/dc converter, so that voltage able vary very wide range without increasing stress converter. achieves better performance and less than single-stage circuit while having higher efficiency lower rating two-stage solution....

We propose an analytical reflection model for the waveguide switch with total-internal-reflection structure, which is grazing of beam narrow beamwaist. For such incidence condition, output optical field superposition incident and reflected fields, we deduce effective coefficient together angular spectrum field.

The power fluctuation phenomenon caused by complex mode of the pulse load has serious influence on stability micro grid with load. Firstly, a new radar supply system architecture Power Fluctuation Suppression Converter (PFSC) is proposed, and characteristics are analyzed. Secondly, according to demand suppression, control strategy current loop given based boost topology. Based conservation energy, capacitance energy storage capacitor method computing minimum obtained theoretical analysis....