Kind Of Harmonization Research Articles

A Harmonic Suppression SVPWM Strategy for the Asymmetric Six-Phase Motor Fed by Two-Level Six-Phase VSI Operating in the Overmodulation Region

For the asymmetric six-phase motor fed by a two-level six-phase voltage source inverter (VSI), when the modulation index is less than 0.5774, the motor operates in the linear region, and the harmonics in the Z1 − Z2 subspace can be suppressed to zero. When the modulation index is beyond 0.5774 and less than 0.6221, the motor operates in overmodulation regions, and the harmonics in the Z1 − Z2 subspace cannot be suppressed to zero. To minimize the harmonics in the Z1 − Z2 subspace for these regions, a harmonic suppression strategy, namely, harmonic suppression overmodulation strategy (HSOS), is proposed in this paper. The lower-order harmonics of the Z1 − Z2 subspace, namely, the 5th, 7th, 17th and 19th, are considered. Compared with the traditional four-vector overmodulation strategy (TFOS), the content of the 5th harmonic is reduced by about 20%, and the total harmonic distortion (THDZ1Z2) of these four kinds of harmonics is reduced by about 21% in the proposed HSOS. Finally, the simulation and experiment are carried out to verify the effectiveness of the proposed strategy.

Germanene nanosheets for mode-locked pulse generation in fiber lasers

Based on an as-prepared high-quality germanene-polyvinyl alcohol (germanenen-PVA) film, the mode-locked operation and 2th, 4th, 5th and 6th order harmonic mode-locked operations with high stability were generated in an erbium-doped (Er-doped) fiber laser for the first time. The mode-locked pulse with a fundamental of 3.9 MHz and a pulse energy of 2.47 nJ was obtained, corresponding to the signal-to-noise ratio (SNR) of about 90 dB. In addition, the characteristics of four kinds of harmonics with frequencies of 7.8 MHz, 15.7 MHz, 19.6 MHz and 23.5 MHz were also systemically investigated. The results proved that the germanene can be used as an excellent nonlinear photonic device for pulse lasers.

Automated Facial Recognition Entry Management System Using Image Processing Technique

The Entry administration is able to be an enormous saddle on the Staff if it is done by hand like note or record. To determination this dilemma, elegant and auto entry administration scheme is being utilized. Other than endorsement is a significant concern in this coordination. The Automated admission administration organization is in general complete through the facilitate of biometrics. Face educational is introverted of the biometric technique to get well this life form. Being a most significant facet of biometric confirmation, facial identification is mortal used a great deal in numerous such function, similar to videotape keep an look at on and CCTV recording organization, an communication sandwiched between central processing unit & human and admittance systems in attendance inside and system refuge. After that to make use of this programme, the dilemma of substitute and student earthly obvious near flush yet they are not in the soft tissue near can easily be resolve. If the student is entered the college gate but they aren’t attending the class also identified. The leading attainment ladders used in this kind of harmonization are tolerated detection and recognize the detect features. This paper propose a replica for implement an automatic Facial credit plus admission organization scheme for student of a school entry by creation use of countenance gratitude method, by means of Eigen countenance principles, facial discovery and indoctrination, and countenance corresponding means. Succeeding to these, the bonds of predictable face encompass to be reasonable by compare with the file contain student countenance. This representation will be a winning method to run the student’s admission time and information the books of student.

MODSafe Project–Overview of a Proposed Life Cycle Approach for Urban Guided Transport Systems

Strong local histories have led in the past to particular local safety concepts, requirements and acceptance schemes for metro, tram and light rail systems from country to country and even from city to city. Urban guided transportation has often been the trendsetter in technology application, driverless or unattended operation projects for example, impacting the life cycle complexity for these kinds of systems. Furthermore, interchangeability of components (crossacceptance) is more and more a driving force to reduce procurement costs and commercial risks, but turns out to be technically challenging.Recent Urban Guided Transport applications have been increasingly assessed by taking into account the existing European railway application standards. The European Commission is encouraging a harmonization drive, notably through its support of major European research projects such as MODSafe – Modular Urban Transport Safety and Security Analysis, one of the latest EU-funded projects in the European Transport sector.The purpose of the MODSafe project is to undertake research of major steps of the Safety Life Cycle of urban guided transport systems in Europe. Even if the rail safety landscape in urban guided transport is highly diversified, the sector will benefit from some kind of harmonization. Beyond safety and security related aspects the MODSafe project deals with life cycle responsibilities as well as acceptance, approval and certification processes.This paper presents one of the key results of the MODSafe project, namely a life cycle approach proposal for urban guided transport systems with typical life cycle phase related roles & responsibilities and key activities. Its application aims reducing the future efforts needs for new or upgraded urban guided transport systems. This paperpresents an overview of the life cycle approach proposal.

MODSafe-Modular Urban Transport Safety and Security Analysis

MODSafe – Modular Urban Transport Safety and Security Analysis – is one of the latest projects in the European Transport sector under the Seventh Framework Programme (FP7) for Research and Technological Development of the European Union.CThe purpose of the MODSafe project is to undertake research of major steps of the Safety Life Cycle of urban guided transport systems in Europe. Even if the rail safety landscape in urban guided transport is highly diversified, the sector will benefit from some kind of harmonization. Furthermore, security items are considered more and more as vital for the urban transport sector. The 22 partners are from industry, associations, R&D organisations, consultants and operators.VThe MODSafe project successfully started in 2008 with state of the art evaluations and initial models. Hazard analyses, safety requirements as well as functional and object models have been developed in the safety sector, while a life cycle approach proposal and an approval approach were established in the process sector. For the security sector, the existing means and technologies for security systems have been analysed, forming the base for a model reference under development.As an outlook to the project closure in August 2012, one can expect reasonable suggestions for the future, aiming to contribute to the European drive for harmonize and to simplify the upgrade/modernization or new construction of urban guided transport systems. Cross-Acceptance is one of the key attempts to the benefit of all parties involved, be it the manufacturers and suppliers, the operators or the safety authorities. This paper briefly presents the MODSafe key findings and results.

Harmonizing RE: Towards a common RE support system for Europe?

Before October 27th the European Commission will have to come up with an evaluation of the European policies and measures supporting renewable power production and consumption. Nowadays two generic systems are in favour: a feed-in tariff, like in Germany, Spain and the Netherlands, and a quota-based system, like in Sweden, Italy and the UK. One common European support system is still way beyond imagination, but some kind of harmonization is still feasible. Rolf de Vos of GreenPrices analyses the debate.

Internet domain names: Proposal for a cybermark

The internet has an estimated 30 to 35 million users in approximately 100 countries and is growing rapidly each month. The expansion of the Internet has brought with it grey areas and questions regarding the suitability and enforceability of existing legai rules. Legal predictability and certainty are being challenged by the new virtual environment, and businesses that are keen to take advantage of the digital single market are wary as a result. Many prominent companies with valuable trademarks have found that they are extremely vulnerable on the internet. The costs of registering trademarks and of pursuing for iniringement are high and with limited and contradictory case law and jurisdictional issues unclear, it seems that some kind of harmonization with regard to trademark protection on the Internet is the way forward.

Secondary Constructions of Linear Synchronous Motor with Divided Permanent Magnets.

Differently from the general linear synchronous motor (LSM), the permanent magnet type linear synchronous motor (PM-LSM) hardly has field windings. Thus, the reduction of hunting oscillations much depends on damper windings. In this paper, we propose novel constructions of PM-LSM that is obtained by dividing magnets and arranging them suitably. With this method, it is possible not only to provide spaces for damper windings but also to eliminate space harmonics of magnetic fields.In this paper, we research into secondary constructions by theoretical analyses and the three-dimensional finite element analysis. To conform the validity of analyses, we also compare it with experimental data. The follows are confirmed. (1) We derive arrangements of magnets that eliminate four kinds of harmonics (5, 7, 11, 13), and we propose a novel arrangement that has advantages from the productive point of view using same width of magnets. (2) Concerning with preferable arrangements of damper windings, distributed windings are more effective in stabilizing operations than concentrated windings, and those arranged at the same intervals are more effective than arranged unequally. We also confirmed the improvement of characteristics with solid plates under magnet parts.