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The emergence of full-controlled power electronic devices, such as VSC, provides a new direction for the development of HVDC. Based on the analysis of the steady-state model of VSC-HVDC, its mathematical model for Newton method power flow caluclation is developed. This paper proposes a uniform iterative...

Taking into account the relevance of obtaining environmentally friendly materials with desired properties and the need for ionic conductors, we present the results of the synthesis and studies of oxygen-conducting La2O3 o 2MoO3 ceramics. Ceramic samples were obtained by the solid-phase method from the...

Injection molding machine motor pump system energy consumption models were established for dosing pumps, servo motor pumps driven and other different ways, to get the comparative analysis of different ways driving injection molding machine energy consumption. The injection molding machine pump system...

The eastern sag of liaohe basin is magmatic activity center of liaohe depression from Mesozoic to Cenozoic,igneous rock is widely development,the main lithology are trachyte, basalt, diabase and so on. Igneous rock lithology is related to the composition, structure, construction and causes of rock, many...

Quanfeng Lantern Opera (also “Quanfeng Hua Deng”, “全丰花灯”), an important local folk art form of Jiangxi Province, was included in the First National List of Intangible Cultural Heritage of China in 2006 (500IX-52). It has developed a unique performance form and characteristics after long-standing as the...

A numerical evaluation on the performance of small commercial AC systems using R-32 as their refrigerant is presented. The evaluation is specifically applied for educational buildings in Bali Province, Indonesia. A digital model was developed. The model was established in Engineering Equation Solver...

With the increasing integration electric vehicles (EVs), reactive power management is crucial for preserving voltage stability and guaranteeing effective distribution of energy in hybrid AC/DC microgrids. These microgrids integrate DC and AC systems, providing greater flexibility and reliability for...

Based on the molecular dynamics simulation, this manuscript is dedicated to the studies of dynamical behavior in the two dimensional Frenkel-Kontorova model with triangular symmetric periodic substrate when a dc drive and a circular ac driven force are applied. The numerical results show that the velocity...

Seasonal energy efficiency of latest split type AC systems which commonly use R-410A, R-32 or R-290 refrigerants has been investigated in this paper. A numerical approach was applied on split AC system which operated at diverse environmental conditions of different regions across Indonesia archipelago....

In order to further calibration parameters on transmission line, it should be considered the influence of the ac-tual conditions of the transmission line, which runs adjacent to the transmission line parameters. For single-circuit transmission line through calculation and double circuit transmission...

In this paper the AC power 50Hz power interference, we use IIR digital notch filter method for industrial frequency interference filter. From the design of IIR digital filter method proceed with, on the IIR digital notch filter simulation, the algorithm deduced, on the fixed-point DSP programming method...

Refrigeration technique is a technique for regulating air temperature in accordance with desired needs, covering the needs of rooms in offices, in industry, shops and others such as processing needs for food preservation, including service/production, maintenance and quality control. In a cooling system...

This research aims to analyze the role of audit committee (AC) and independent commissioners (ICs) in relation to companies’ going concern opinion. Based on the Indonesian GCG rules, one of its duties is to maintain company’s long term going concern. However, prior studies show that the existences of...

Based on the data from field experiments, the phosphorus content and phosphorus accumulation of rice plants were analyzed, and phosphorus distributions in different parts of rice were studied as well. The results showed that compared with farmers' fertilization practice (FFP), site-specific nutrient...

The capillary tube is one of the most important components in the air cooling system (AC), whose function is to reduce the pressure and temperature of the refrigerant in the AC system. The dimensions of the capillary tube influence the performance of an air cooling system, therefore this research was...

Electrical Impedance Tomography (EIT) is an emerging non-invasive imaging modality that leverages tissue-specific electrical conductivity variations to generate functional images, offering unique advantages over conventional techniques like X-ray, CT, MRI, and ultrasonography. Unlike radiation-based...

Influences of different coiling processes on microstructure transformation and mechanical properties and microstructure of ultra-high strength steels (UHSS) were investigated. Microstructure and distribution characteristics were obtained. Samples were proceeded by a controlled rolling (CR) followed by...

AC-DC electrified locomotive and AC-DC-AC high-speed locomotive are two major electrified railway traction load type, and different types of loads can cause different effects to the power quality of electrified railway traction station. Based on power grid monitoring data of different electrified traction...

The Solar Power Plant (PLTS) is a solution to the fossil fuel/oil energy crisis. Oebau Village, in Pantai Baru District, Rote Ndao Regency, covering an area of 1,280.1 hectares, has around 800 hectares of rainfed rice fields. Through the village fund program, reservoirs have been built to collect water...

MnO2 is directly deposited on active carbon (AC) to synthesize AC/MnO2 composite to improve the capacitance of electrode material. AC/MnO2 composites are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 adsorption-desorption, and the electrochemical properties are evaluated...

The construction of UHV AC projects has significant advantages in improving the clean energy consumption capacity and optimizing the large-scale allocation of energy resources. At present, the carbon emission reduction benefits of UHV AC projects have not been quantitatively studied, and equipment transportation...

In this paper, we present F5 steganographic algorithm and its steganographic system, then we embed 35.5kb information (a txt document) into a 99.7kb JPEG image by using F5 steganographic system. The experimental result shows that when we choose k=3 which is based on utilization rate of the data(R), then...

Our objective to study the expression and activity of the apoptosis protease Caspase-3 in E. coli BL21 (DE3) Plyss. The cDNA of Caspase-3 was amplified by PCR and inserted into the cell of K562, it was then cloned to prokaryotic expression vector pET-21b, after which Caspase-3 was induced by IPTG. The...

This study evaluated the AC parasitic capacitances and turn-off resistance of GaN FETs. Moreover, the study proposes an easily adjustable gate drive circuit appropriate for driving E-mode, cascode, and D-mode GaN FETs in the same driver topology. The proposed gate drive circuit involving only positive...

The mathematical relationship between reactive power consumed by DC system and AC voltage on inverter bus is derived under different control modes, respectively. Based on these relationships, a new definition of multi-infeed short circuit ratio (MISCR) is formulated from the power-flow model of PQ decoupled...

On the basis of existing Ion Mobility Spectrometry (IMS) technology, significant improvements have been made in drift tube design, gas path system structure, ionization source choice, and display screen. Then, a series of experiments on Sarin (GB), Mustard gas(HD), Hydrogen cyanide (AC) and VX detection...

With the rapid development of the power electronic technology and control technology, the use of the IGBT, IGCT full controlled devices consisting of a voltage source converter (voltage source converter, VSC) in the DC transmission system has been widely used. However, rapid response of power electronic...

The increasing number of vehicles in an area is the cause of road damage. The load from these vehicles can cause deformation in the road layer, especially in the asphalt concrete-wearing course (AC-WC) layer. Improving the quality of road layers requires materials that meet specifications and additives...

The control parameters optimization of the servosystem in parallel robots, which is the basis of the control system design of the robot, is very important. In this paper, the parameters optimization of the servosystem based on the genetic algorithm method is introduced. In the servosystem of parallel...

In order to study the reflection crack resistance of asphalt mixture, using Overlay tester, crack resistance property of five asphalt mixture types were analyzed based on the grey relation analysis. The paper analysis the influence of mixture types temperature and volume index (void ratio) on the anti-cracking...

As the global energy problem becomes more and more severe, the ultra-high voltage (UHV) AC transmission technology will get a large number of applications. The UHV transformer, as one of the important equipments of the transmission system, its quality and reliability is directly related to the safe and...

The potential energy of rain has certain potential in power generation. This article used the technology of cross flow rainwater power generation. In order to achieve the highest efficiency of rainwater power generation, this paper established a reasonable distribution model of generator in pipeline...

This research focuses on studying harmonic disturbance conditions that have the potential to arise at DC traction substations caused by non-linear loads, namely rectifiers. In the DC railway traction substation system there is a rectifier component whose function is to convert AC power to DC. The aim...

The distribution of maximum available power depends heavily on the quality and dependability of electronic high-powerconverters. Multilevel Inverters (MLIs) convert a fixed DC input into an AC output with a stepped waveform. However, commercial and utility applications’ power system harmonics can cause...

This paper discusses the design of the low-speed single-phase AC permanent magnet generator through the modification of a squirrel cage single-phase AC induction motor. Both rotor and stator of the single-phase AC induction motor are modified. Eight permanent magnet poles are embedded in the rotor so...

In “General Provisions of Civil Law” of the People’s Republic of China, there are some important new terms such as “gongxuliangsu” (公序良俗, public policy and ethics), “bingchichengshi, keshouchengnuo” (秉持诚实，恪守承诺, uphold honesty and honor commitment) and “shanyixiangduiren” (善意相对人, the good-faith third...

According to the problem that the intelligence is not high of the soccer robot, using the mechanical theory as a guide, making some mechanical analyses and calculations on the pressure and transmutation states of chip kick mechanics, and conducting optimal design too, then making the structure of chip...

This study aims to improve the understanding of concepts in science subjects about special rays and image formation by applying manipulative assisted experiential learning. This research is a classroom action research conducted 2 cycles. This research was carried out at 8th Grade Muhammadiyah 8 Junior...

In the modern electric power system,power systems expand day by day in China.More and more large capacity generators with fast control excitation systems are put into operation.Along with the introduction of the competition mechanism by power marketing,the possibility of operating at the edge of stability...

In today's power grid, harmonics produced by all types of harmonic source will pollute the power system, and massive consumption as well as transmission of reactive power will affect the stability of Electrical equipment operation. It is essential to apply AC Filter, an equipment to reduce harmonics...

A kind of high-voltage inverter power supply for electron beam precision micro machining equipment is introduced. The system is based on the current transformation way of AC DC AC AC DC. Its intermediate inverter link is intermediate frequency inverter which is composed of two phase parallel half-bridge...

With the increase of renewable energy penetration and the rapid development of AC-DC hybrid microgrid, the performance of rectifier circuit, as the core device to realize the efficient coupling of AC source and DC bus, directly affects the power quality and operation efficiency of the system. Traditional...

Shifting performance of Manual Transmission is very important for users and manufactures of Manual Transmission. Traditionally, shifting performances were tested on test bench equipped with pneumatic shift manipulator, which was low efficiency, low control accuracy and noisy. In order to improve test...

Based on the concept of low carbon environmental protection, the used asphalt mixture was recycled and measured to determine the asphalt content of 3.8%, and to determine the regeneration mixture gradation of AC-20,the optimum asphalt content of regeneration mixture was 4.9% determined by Marshall test,and...

When there are faults in AC grid, one of the concerns is power distribution as well as system stable operation while AC grid in fixed DC voltage side goes wrong. The second point of concern is power distribution of other converter stations while certain converter station fails. Moreover, based on VSC-MTDC...

A digital method of noise measurement of charge-sensitive preamplifiers (CSP) used with detectors of ionizing radiation has been proposed, which benefits from the fast development of digital techniques. Compared with the classical methods recommended by IEEE Std 301-1988, CEI/IEC 61151 and GB/T 4079-94,...

With the arriving era of Chinese popular higher education, the students majored in liberal arts have to obtain more and more practical skills and the development of applied arts majors has taken more and more attention. In order to adapt the de-velopment trend of liberal arts talent training in the new...

Analysis of the three-phase AC motor when used in specific ways. Put forward with the STC89C52 chip as the core, the use of enhanced the advantage of solid state relay, achieve non-contact /Y transformation. The whole circuit is simple and compact, installation, maintenance, and use is very convenient,...

In the conditions of dynamic growth of interest in theoretical and practical issues of economic security, systematization and development of the methodological apparatus for ensuring the economic security of an enterprise, according to the authors, is one of their priority tasks in this field of scientific...

The article analyzes consumer´s percep-tion of the price of selected activities of policies that are implemented in the pro-cess of building and managing the brand value in the specific conditions of the Slovak Republic. Subsequently, the par-tial proposals for the pricing policy ac-tivities are formulated...