This letter proposes a currentless sorting and selection (SAS)-based capacitor-voltage-balancing method for modular multilevel converters. Without the knowledge of arm-current signals, this has almost same performance as conventional SAS while reducing sampling compacting control system, saving overall cost. In letter, derivative total capacitor voltage an arm, instead arm current, is employed to determine which submodules should be inserted or bypassed. Furthermore, efficacy proposed...

As a physiological process and high-level cognitive behavior, emotion is an important subarea in neuroscience research. Emotion recognition across subjects based on brain signals has attracted much attention. Due to individual differences the low signal-to-noise ratio of EEG signals, performance conventional methods relatively poor. In this paper, we propose self-organized graph neural network (SOGNN) for cross-subject recognition. Unlike previous studies pre-constructed fixed structure,...

This work describes two Ni( ii )/Zn( )-CPs with 3D (4,5)-connected net for 1 and pcu 2, both can serve as multiresponsive luminescent sensors of IO 4 − , 2,6-dichloro-4-nitrophenol folic acid.

We apply a Bartik-type instrumental variable design to examine the impact of financialization on demand for skilled labour. Our findings indicate that substantially reduces proportion employees over total employment in China. The negative effects are particularly notable capital-intensive companies, those led by executives with financial backgrounds, and substantial long-term assets.

The Modular Multilevel Converter (MMC) has become the most promising topology for high-voltage and high-power applications. Sub-Module (SM) fault ride-through capability is one of important features MMC. To study approach controlling SM faults, differences between hot-backup cold-backup configuration redundant SMs are analyzed. After that, an internal asymmetrical dynamic model MMC analyzed, which shows that unexpected fundamental 3rd harmonic components in circulating current result...

A variety of N ‐hydrogenated/ ‐methylated pyridinium salts are elaborately designed and synthesized. Thermogravimetric X‐ray photoelectron spectra analysis indicate the intensities NH covalent bonds strengthened step‐by‐step from 3,3′‐(5′‐(3‐(pyridin‐3‐yl)phenyl)‐[1,1′:3′,1″‐terphenyl]‐3,3″‐diyl)dipyridine (Tm)‐HCl to Tm‐HBr then Tm‐TfOH, which results in gradually improved cathode interfacial modification abilities. The larger dipole moments + H containing moieties compared those CH 3...

Abstract Owing to the propensity of osteosarcoma recur and metastasize, administration a topical treatment enhance therapeutic effect conventional therapy is necessary. To develop locally released drug delivery system (DDS) inhibit growth recurrence osteosarcoma, hydrophobically modified silica nanoparticles (m‐SiO 2 )/poly(ε‐caprolactone) (PCL) porous scaffolds are fabricated by 3D printing emulsion inks. Ruthenium‐loaded PEGylated liposomes (RL) then incorporated into obtain liposome...

The function of reactive power optimization (RPO)is to realize the electric fence and optimal control voltage in order that whole network's operation level can be improved loss network reduced. Recently, research ORP is mainly focus on handling non-liner discrete variables convergence algorithm, which key difficult point current research. quantum PSO applied system, has great effect searching relevance coverage. However, premature problem will appeared probably. In prevent some stagnations...

In recent years, extremely bad weather occurs frequently and the accumulation of ice on high voltage AC transmission lines renders mechanical electrical damages to these lines. They greatly influence power system normal operation; therefore, de-icing technology has been highly regarded. Given constraints current thermal, spontaneous ice-melting method, this paper that compare with previous incomprehensive papers firstly puts forward a full DC scheme, which contains all deicing parameters...

As the national energy and environmental problems becomes more acute, an urgent subject that needs to be solved by power enterprises is strengthen conservation emission reduction as well improve low-carbon benefits. The existing literature has neither provided a complete system for evaluating benefits of smart grids, nor eliminated influences constraints. This paper introduces three-stage DEA model on basis eliminating factors builds evaluation in line with characteristics grids. Meanwhile,...

The pth moment stability of stochastic Markov jump systems (SMJSs) with time-delays and polynomial growth was investigated in this paper. Both the involved are mode dependent. By using new property as well relation between time-delay generator Markov-chain, sufficient criteria proposed. Meanwhile, robustness stable SMJSs is also considered, which reveals that how much perturbation can tolerate. As an application, consensus multi-agent nonlinear dynamics investigated. Finally, effectiveness...

In this paper, we aim to reveal the connection between predictability and prediction accuracy of stock closing price changes with different data frequencies. To find out whether frequency will affect its predictability, a new information-theoretic estimator Plz, which is derived from Lempel–Ziv entropy, proposed here quantify five-minute daily SSE 50 index Chinese market. Furthermore, method EEMD-FFH previously was applied evaluate financial higher sampling leads accuracy. It turns that...

Abstract The effects of austenitizing temperature and holding time on the austenite grain growth behavior GCr15 bearing steel are reflected in this paper. SEM EBSD deeply reveal effect size misorientation angle boundary. results show that both will make grow to a certain extent. However, change cause greater size. also have different trends ranges. Gcr15 test is combined with Sellars model derive its kinetics model.

The networked control systems (NCSs) under cyberattacks have received much attention in both industrial and academic fields, with rare on the delayed (DNCSs). In order to well address problem of DNCSs, this study, we consider resilient event‐triggered safety NCSs time‐varying delays based switched observer subject aperiodic denial‐of‐service (DoS) attacks. observer‐based (ETC) strategy is devised cope DNCSs for first time so as decrease transmission input limited network channel resources. A...

This paper proposes a new Fault Ride Through (FRT) method of Permanent Magnetic Synchronous Generator (PMSG) wind energy system based on the improved machine-side generator (MSC) control and superconducting magnetic storage (SMES) under grid symmetric fault condition. The topology basic principle proposed scheme are investigated in detail. strategies MSC SMES also presented. Furthermore, simulation PMSG integrated with is conducted PSCAD/EMTDC. Simulations show that FRT could maintain key...