# Voltage

Xem 1-20 trên 363 kết quả Voltage
• ### Voltage Sags and Interruptions

causing a voltage sag with duration of more than 1 cycle occurs within the area of vulnerability. However, faults outside this area will not cause the voltage to drop below 0.5 pu. The same discussion applies to the area of vulnerability for ASD loads. The less sensitive the equipment, the smaller the area of vulnerability will be (and the fewer times sags will cause the equipment to misoperate). The voltage sag performance for a given customer facility will depend on whether the customer is supplied from the transmission system or from the distribution system.

• ### High Voltage Xlpe Cable Systems - Technical User Guide

Calculation of the induced voltage Ui induced voltage in a cable system depends on the mutual inductance between the core and sheath, wires and eventually current cable length: LM is mutual inductivity core and shell (H / km). Inductivity interplay between core and shell LM calculated as follows: To install the formation of trefoil

• ### Bài giảng Chương 7: Reference Voltage & Comparator

Bài giảng Chương 7: Reference Voltage & Comparator được thực hiện nhằm giúp các bạn nắm bắt được những kiến thức về module VREF; module COMPARATOR. Mời các bạn tham khảo bài giảng để nắm bắt nội dung chi tiết. Tài liệu hữu ích với các bạn chuyên ngành Công nghệ thông tin.

• ### Merlin Gerin technical guide Medium Voltage

Merlin Gerin technical guide Medium Voltage help you to carry out the calculations requires to define and determine equipment dimensions and provides useful information enabling you to design your MV switchboard. It's goal is presenting and assisting in the section of MV equipment in conformity with standards; proving design rules used to calculate the dimensions or ratings of an MV switchboard.

• ### Universal voltage mode biquadratic filter synthesis using nodal admittance matrix expansion

Universal voltage mode biquadratic filter synthesis using nodal admittance matrix expansion. This paper presents a systematic synthesis procedure for generating universal voltage- mode biquadratic filters based on the nodal admittance matrix expansion. The obtained eight equivalent circuits can realize all five standard filter functions namely lowpass, bandpass, highpass, notch and allpass employing only two active elements.

• ### Finite control set model predictive control to balance DC-link capacitor voltage for TType NPC inverter of grid-connected photovoltaic systems

This paper proposes the Finite control set Model Predictive Control (FCS-MPC) with delay compensation for three-phase threelevel T-Type NPC inverter (T-Type NPC) of grid-connected photovoltaic systems (PV). The proposed FCS-MPC controls the objectives: current tracking control, DC-link capacitor voltage balance, the reduction of switching frequency to ensure issues of the power quality and improve the efficiency of grid-connected of PV system.

• ### Novel optimal coordinated voltage control for distribution networks using differential evolution technique

This paper investigates a Distributed Generators (DG) connected to distribution networks offering multiple benefits for grids and environments in the case of renewable sources used. Nevertheless, this task requires an appropriate planning and control strategy, if not several drawbacks can issue, including voltage rise problems and increased power losses. To overcome such disadvantages, this paper proposes a coordinated voltage control CVC method for distribution networks with multiple distributed generators.

• ### Fast calculating formulas of current passing through grounding system of high voltage substation when lightning strikes at the grounding wire of transmission line

Current injecting a grounding system of high voltage substation decides the amplitude and the voltage distribution along the grounding grid [1]-[2]. Therefore, the determination of short circuit current at substation is always cared by the designers. This paper presents a method to fast calculate the current passing through grounding system of high voltage substation when lightning strikes at the grounding wire of transmission line.

• ### Current unbalance reduction in low voltage distribution networks usingautomatic phase balancing device

This paper presents the application of anAutomatic Phase Balancing Device (APBD) to reduce current unbalance in low voltage distribution networks. The proposed algorithm allowsus to calculate the unbalanced level and to conduct the automatic phase balancing device during load variations. This device was then applied to a low voltage feeder of Cau Giay district (Viet Nam). Results show that the unbalanced current is always maintained lessthan 15 %.

• ### Low voltage operation electrostatic comb drive micro-mirror for laser scanning display

This paper presents our recent developments as well as emerging techniques introduced in literature for decreasing the operation voltage of electrostatic comb drive micro-mirror. Methods for decreasing the operation voltage at large rotation angle and high scan frequency for application in the laser scanning display are focused to discuss in this paper.

• ### Current-Voltage characteristics of polymethylthiophene/TiO2 nanocomposite cells

Titanium oxide nanoparticles (TiO2) were combined with polymethylthiophene (PMT), giving nanocomposites in core-shell structure via chemical polymerization. In this work, the current - voltage characteristics of sandwich cells composed from such nanocomposite have been studied. For these investigations films of nanocomposites were prepared by electrophoretic deposition (EPD).

• ### An improved DC voltage droop control for interconnection of wind farms by VSC-MTDC

The strategy can ensure the rapid distribution of wind power variation, at the same time it can control the DC voltage within an allowable range. In addition, if the wind power remained stable over a period of time, the strategy can adjust the DC voltage back to the rated value.

• ### Effect of commutation inductor in ZVS and clamped voltage

This paper presents an analysis of the effect of commutation inductor in ZVS and clamped voltage. To construct such converters, a switch cell, which consists of the basic PWM switch cell and an additional commutation inductor circuit, is proposed.

• ### Các thông số của Op amp

Điện áp lệch không đầu vào: Điện áp lệch không (input offset voltage): do sự không cân bằng của các mạch điện tử trong op amp, khi điện áp đầu vào bằng không thì điện áp đầu ra khác không. Điện áp offset là điện áp cần đặt vào đầu vào để cho đầu ra bằng 0. Ký hiệu VIO.

• ### Electronics

Electronics may be defined as the science and technology of electronic devices and systems.Electronic devices are primarily non-linear devices such as diodes and transistors and in general integrated circuits (ICs) in which small signals (voltages and currents) are applied to them. Of course, electronic systems may include resistors, capacitors and inductors as well.

• ### Low Voltage Products User manual Masterpact NW08-63 IEC

Products and systems that provide protection, control and measurement for electrical installations, enclosures, switchboards, electronics and electromechanical devices for industrial machines, plants and related service. The offering also includes intelligent building control systems, also known as KNX systems, for home and building automation to improve comfort, energy efficiency and security.

• ### Ecodial V3.38 Low-voltage electrical installation design software Fupact and variable speed drive

Ecodial V3.38 Low-voltage electrical installation design software Fupact and variable speed drive integrated Building a New Electric World Ecodial V3.38 complies with the latest electrical standards, bringing LV installation design software to a new level of performance. With Ecodial V3.38, design low the easy way Personalise your project New standards Ecodial V3.3 series have been approved by the UTE. It can be used to produce design ﬁles complying with: b the CENELEC R 064-003 European calculation guide b IEC 364 installation standards.

• ### A neural-network-based space-vector PWM controller for a three-level voltage-fed inverter induction motor drive

A neural-network-based space-vector PWM controller for a three-level voltage-fed inverter induction motor drive

• ### ime Control of a Three Phase 4 Wire PWM Inverter with Variable DC Link Voltage and Battery Storage for PV Application

The discrete time control of a three phase 4 wire PWM inverter with variable DC link voltage for simultaneously supply of three phase and single phase load in transformerless stand alone photovoltaic application with battery energy storage (BES) and LC output filter is described.

• ### THE INVERTERS

Inverter Technology variable power supply voltage and frequency adjustment can not be fixed, the power supply voltage and frequency are required to use energy. Advantages of this technology is microwave lighter, smaller but wider oven cavity, energy and cooking time, especially as a result of better food.