• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Document
Document

... Characteristics of the High Frequency Link Inverter No low frequency component exists in the waveform transmitted by transformer. A compact high frequency transformer is allowed for the transmission. The operation frequency of the two switches in the secondary side of the transformer is low. Thus l ...
A comparative assessment of hysteresis and dead beat controllers
A comparative assessment of hysteresis and dead beat controllers

High-precision Power Measurement of SiC Inverters
High-precision Power Measurement of SiC Inverters

... Inverters generate PWM-modulated output that includes the switching frequency and its harmonic components. Consequently, power measurement must be performed over a wider band than when measuring DC or commercial frequency power. Let’s study the band that is needed in order to measure power at the sw ...
300V Power Supply - Labnet International
300V Power Supply - Labnet International

JN3616501653
JN3616501653

Synchronous Generator
Synchronous Generator

... THREE PHASE ALTERNATORA three phase stator can also be connected so that the phase form a ...
Mohamed Ashour
Mohamed Ashour

a review approach of power grid analysis in vlsi designs
a review approach of power grid analysis in vlsi designs

Power Electronics
Power Electronics

Electrical - C:\4M\CALC\TESTELE
Electrical - C:\4M\CALC\TESTELE

... i. The panels connecting wiring will be of the NYY or NYM type and in the case where the installation is embodied to the walls steel pipes will be used. ii. Wherever the installation is embodied and is not necessary to be of the sealed type the wiring will be of the ΝΥΑ type passing through plastic ...
HVSBstatus_02_09 - Indico
HVSBstatus_02_09 - Indico

TRANSIENTS IN NO-LOAD CONDITION OF POWER
TRANSIENTS IN NO-LOAD CONDITION OF POWER

IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

Basler electric offers a line of digitally controlled shunt static
Basler electric offers a line of digitally controlled shunt static

... the amount of inrush current flow. The ICRM (included on all MP-D200 standard mounting plates) prevents damage to a protected voltage regulator during power-up by limiting inrush current to a safe level. Without inrush protection, the inrush current is limited only by the level of the power source i ...
s lec e - pSenso
s lec e - pSenso

... 1. This equipment, being built-in-type, normally becomes a part of main control panel and in such case the terminals do not remain accessible to the end user after installation and internal wiring. 2. Conductors must not come in contact with the internal circuitry of the equipment or else it may lea ...
After you`ve designed the world`s best servo…
After you`ve designed the world`s best servo…

... Ripple refers to the power supply's instantaneous output voltage variations, Figure 8, which occur at twice the power supply frequency. While output droop may be measured on an ordinary DC-reading voltmeter, ripple viewing requires an oscilloscope. Ripple creates problems that are less readily diagn ...
Choosing The Right Topology
Choosing The Right Topology

Day 2 Notes 1
Day 2 Notes 1

... simple (idealized) cases to begin with • Resistor load models unity power factor load • Id load models large inductive load ...
Effect of Unified Power Flow Controller on Power System
Effect of Unified Power Flow Controller on Power System

LH0041 - Texas Instruments
LH0041 - Texas Instruments

... obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the speci ...
Study of Excitation Control System Responses
Study of Excitation Control System Responses

INTRODUCTION TO BASIC POWER SUPPLIES
INTRODUCTION TO BASIC POWER SUPPLIES

(1) AC distribution system
(1) AC distribution system

Power Amplifier Circuits
Power Amplifier Circuits

... voltage drop across both Rcoil and RE may be considered negligible and we may make the approximation VCEQ ≈ VCC. If all this works out, the expression for ICQ may be further simplified as ...
Study of SVC component in transmission line for
Study of SVC component in transmission line for

< 1 ... 131 132 133 134 135 136 137 138 139 ... 250 >

Power factor



In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of -1 to 1. A power factor of less than one means that the voltage and current waveforms are not in phase, reducing the instantaneous product of the two waveforms (V x I). Real power is the capacity of the circuit for performing work in a particular time. Apparent power is the product of the current and voltage of the circuit. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power will be greater than the real power. A negative power factor occurs when the device (which is normally the load) generates power, which then flows back towards the source, which is normally considered the generator.In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor.Linear loads with low power factor (such as induction motors) can be corrected with a passive network of capacitors or inductors. Non-linear loads, such as rectifiers, distort the current drawn from the system. In such cases, active or passive power factor correction may be used to counteract the distortion and raise the power factor. The devices for correction of the power factor may be at a central substation, spread out over a distribution system, or built into power-consuming equipment.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report