• Study Resource
  • Explore Categories
    • 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
(CCM) and Discontinuous Conduction Mode (DCM)
(CCM) and Discontinuous Conduction Mode (DCM)

... Fig. 6 Block diagram converter power supply Hence, when the duty cycle, D, is such that IO (peak) = IAV we have a transition or border region mapped out between DCM and CCM of operation. This will be unique for each circuit topology. In short when the ratio at CCM boundary occurs. Often in applicati ...
Analog Output Modules, 8 Channels, IC693/694ALG392
Analog Output Modules, 8 Channels, IC693/694ALG392

2STA2121
2STA2121

... 1. Pulsed duration = 300 µs, duty cycle ≤ 1.5% ...
VIPer100 THE MOST ADVANCED MONLITHIC SOLUTION FOR
VIPer100 THE MOST ADVANCED MONLITHIC SOLUTION FOR

... the device goes back to the inactive state where the internal circuits are in standby mode and the start up current source is activated. The converter enters an endless start up cycle, with a start-up duty cycle defined by the ratio of charging current towards discharging when the VIPerXX0 device tr ...
Technical Data PROtroniC TopLINE EMU
Technical Data PROtroniC TopLINE EMU

... 6, one group with 6 channels for control of an external ignition power stage Diagnosis functions of external ignition power stage ...
scanpro20 - LaserShowParts
scanpro20 - LaserShowParts

... Wire the scan amps to the power supply, using the pinout details listed above. Before applying power, without the power connectors plugged into the scanner drivers, check for correct voltages on relevant power pins of the power connector ...
UcD32MP UcD34MP UcD36MP
UcD32MP UcD34MP UcD36MP

... and off through the enable input. The nominal main output voltage will be + and - 18V (@115/230V mains input). The rated power is 70W/5min (according to FTC requirements). The main output is both short and long term over current and short circuit protected. In case of a short term over current condi ...
Lecture 5
Lecture 5

... How much electrical energy was turned into thermal energy every minute in the three situations we had in example 20.2? ...
Clamp-On Harmonic Meter Model 721
Clamp-On Harmonic Meter Model 721

... (%DF), Crest Factor (CF) and Peak of distorted currents and complex voltages. It also gives Min, Max, Max Peak and Average measurement values for recording over 24 hours to monitor daily fluctuations. Frequency (Hz) may be measured through the current or voltage at any time. An analog output functio ...
High Performance Stepper Motor Drive Circuit (Rev. A)
High Performance Stepper Motor Drive Circuit (Rev. A)

Module Description - uge
Module Description - uge

... location Recall Parameters, where the need to adjust to "Lo.-1", press the "OK" button brings up the storage location 1 Parameters. 5-A total of 09 of 10 The machine set storage locations, each storage location can be arbitrarily set voltage Current value, each storage location independent of each o ...
Commande Vectorielle Non Linéaire de L`onduleur MLI à
Commande Vectorielle Non Linéaire de L`onduleur MLI à

... problem formulation adopts three performances indexes, the maximum overshoot, the rise time and the integral absolute error of step response as the objective function to determine the PI control parameters for getting a well performance under a given system, the primary design goal is to obtain good ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,

AI21212221
AI21212221

... converters. It extends the concept of voltage and power-flow control beyond what is achievable with the known two-converter UPFC. The simplest GUPFC consists of three converters—one connected in shunt and the other two in series with two trans- mission lines in a substation. The basic GUPFC can cont ...
Chapter 6-voltage regulator
Chapter 6-voltage regulator

... Transformers convert AC electricity from one voltage to another with little loss of power through inductively coupled electrical conductors. Transformers work only with AC voltage Step-up transformers increase voltage. Step-down transformers reduce voltage. ...
Voltage
Voltage

Electricity generators
Electricity generators

... be described as generators “run backwards.” When current is passed through the armature of a DC motor, a torque is generated by magnetic reaction, and the armature revolves. The action of the commutator and the connections of the field coils of motors are precisely the same as those used for generat ...
AN-5019 LVDS: Calculating Driver/Receiver Power AN- 5019
AN-5019 LVDS: Calculating Driver/Receiver Power AN- 5019

... comparison. ...
Optocouplers in Switching Power Supplies
Optocouplers in Switching Power Supplies

LCT_PRO_ENG_UM.
LCT_PRO_ENG_UM.

Evaluates:  MAX9922/MAX9923 MAX9922 Evaluation Kit General Description Features
Evaluates: MAX9922/MAX9923 MAX9922 Evaluation Kit General Description Features

TIP142T
TIP142T

... Revision history Table 5. ...
ON-CHIP CURRENT SENSING TECHNIQUE FOR CMOS …
ON-CHIP CURRENT SENSING TECHNIQUE FOR CMOS …

... Using the internal Current-Sensing technique, it not only reduces the external pins for the monolithic controller, but also reduces the complexity of the design. Due to the accurate Sensing performance, a compensation ramp can be added to the sensing signal without any consideration on the variation ...
Altivar 61 - Prom Electric
Altivar 61 - Prom Electric

... ATV61HD11M3X ...
Modular multilevel converters with integrated batteries energy storage
Modular multilevel converters with integrated batteries energy storage

... topology [5-7]. One of the main benefits of this layout is undoubtedly the possibility to integrate and adjust the required active power since each battery unit can operate at different power level, while maintaining a three-phase balanced line-toline voltage. Moreover, due to its success in HVDC ap ...
< 1 ... 849 850 851 852 853 854 855 856 857 ... 1315 >

Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report