• 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
Determination of Planck`s constant using LEDs
Determination of Planck`s constant using LEDs

... always find that eVt < hf. Some of the photon energy is supplied by thermal energy. ...
Current-Fed Inverters Voltage
Current-Fed Inverters Voltage

... much smaller and serve two roles: 1) primarily, to allow commutation from the outgoing GTO to the incoming GTO, 2) secondarily, to load filter higher ...
Motors and loads - Schneider Electric
Motors and loads - Schneider Electric

... variations in their load torque. The development of direct frequency converters (of cycloconverter type) or indirect converters switching naturally due to the ability of synchronous machines to provide reactive power has made it possible to produce variable-speed electrical drives that are powerful, ...
L05030 ACCUlight LED Driver 20W, 3-27 Vdc, 350
L05030 ACCUlight LED Driver 20W, 3-27 Vdc, 350

... Fulham LumoSeries takes pride in the quality of its products. We not only develop all products in house, they are also produced to ensure guaranteed reliability and performance. Fulham LumoSeries drivers come with the assurance of a 5 year warranty. After all, with typical LED lifetimes of 50,000 ho ...
L05030 ACCUlight LED Driver 20W, 3-27 Vdc, 350-700
L05030 ACCUlight LED Driver 20W, 3-27 Vdc, 350-700

inverter mode operation of the single-phase rectifier
inverter mode operation of the single-phase rectifier

... laboratory stand with the two identical DC electric machines, mechanically coupled, is used. The active load is emulated by one of the two DC machines, which operates as a generator (G), when it provides power. The generator is mechanical driven by the second machine that operates as a motor (M). In ...
Document
Document

... The MMS101H is a digital latching bipolar magnetic switch that integrates TMR and CMOS technology in order to provide a magnetically triggered digital switch with high sensitivity, high speed, and low power consumption. It integrates a push-pull half-bridge TMR magnetic sensor and CMOS signal proces ...
Underlying Principles - Sample H/L Question
Underlying Principles - Sample H/L Question

DK124 - Grupo Autcomp
DK124 - Grupo Autcomp

... 12.1 Heat dissipation: A good estimate is that the controller will dissipate the output power. So enough cooper area connected to the 5, 6, 7, 8 COLLECTED pins and tin-plating are necessary to provide the controller heat sink. 12.2 The 5, 6, 7, 8 COLLECTED pins is high voltage part of the IC, peak v ...
details on the Furutech Schuko Version ETP-80e. ()
details on the Furutech Schuko Version ETP-80e. ()

STK401-020 - Audio Lab of Ga
STK401-020 - Audio Lab of Ga

... ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property ...
Lesson 3 Electromagnetic Devices and Treansformers File
Lesson 3 Electromagnetic Devices and Treansformers File

ECE471-WIN15 [NEW] - Oregon State EECS
ECE471-WIN15 [NEW] - Oregon State EECS

SMP3PM (Page 1)
SMP3PM (Page 1)

... 3. Connect proper transformer to terminals marked AC (see voltage output/transformer selection table). Use 18 AWG or larger for all power connections (Battery, DC output). Use 22 AWG to 18 AWG for power limited circuits (AC Fail/Low Battery reporting). 4. Connect devices to be powered to terminals m ...
sample questions - Department of Electrical Engineering, IIT
sample questions - Department of Electrical Engineering, IIT

... 1. A 3-phase, 415V, 6-pole, 50Hz. Star-connected synchronous motor has an emf of 520V(Line to line). The stator winding has a synchronous reactance of 2 per phase and the motor develops a torque of 100 Nm. The motor is operating from a 415V, 50Hz bus, (i) Calculate the current drawn from the supply ...
ANALOG PAGE 68-71.p65
ANALOG PAGE 68-71.p65

... The main challenge when measuring the harmonic power is to make sure that the system can measure harmonics on the voltage and current inputs. The important characteristics of the electronic system are: • Analog input bandwidth The analog input bandwidth defines the frequency limit above which the si ...
Users` Manual - Mapletree Audio Design
Users` Manual - Mapletree Audio Design

... are identical. The inputs for each channel are applied to the input jacks J1a,b and fed directly to the volume control P1, which is a ladder-type stepped attenuator. The signal from the output of the attenuator is directly coupled to the inputs of two parallel preamp circuits. The first (top circuit ...
Brushed DC Motor Basics
Brushed DC Motor Basics

... As we compare the performance characteristics of all four types of brushed DC motors we see that they all show the same basic characteristic, as speed increases torque decreases. For a permanent magnet brushed DC motor this is a very linear process. With the shunt wound brushed DC motor you can see ...
PRECISION AC WATT OR VAR TRANSDUCER GW5- &amp; GV5- OSI
PRECISION AC WATT OR VAR TRANSDUCER GW5- & GV5- OSI

... of sub-metering applications. • Measurement using direct-connection, current transformers and/or potential transformers. ...
Product Brochure
Product Brochure

... systems. The basic components of the system include 2640 amp power bays which house the rectifiers and MCA chassis, and 6000 amp distribution bays. The cabled architecture allows the placement of the bays anywhere the user desires without regard to any specific order. This also makes it more user fr ...
Infineon - Article - New OptiMOS™ - 40V and 60V
Infineon - Article - New OptiMOS™ - 40V and 60V

Power quality monitoring and analysis with
Power quality monitoring and analysis with

Presentation - Continental Electric
Presentation - Continental Electric

... Common Mode Choke Inductive absorption is an electrical solution whereas inductive components are placed over the drive cables to absorb the transient voltage and common mode currents. The inductive components need to have high permeability, high saturation, and low power loss. They do not affect th ...
analysis of the interleaved isolated boost
analysis of the interleaved isolated boost

... elements or leakage inductance; also, the voltage stresses are large. A boost converter (step-up converter) is a DC-to-DC power converter with an output voltage greater than its input voltage. It is a class of switched-mode power supply (SMPS) containing at least two semiconductors (a diode and a tr ...
Draw the schematic, and label the device sizes.
Draw the schematic, and label the device sizes.

< 1 ... 1064 1065 1066 1067 1068 1069 1070 1071 1072 ... 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