• 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
Transforming superior technology into reliable quality. Answers for energy. www.siemens.com/energy
Transforming superior technology into reliable quality. Answers for energy. www.siemens.com/energy

ECE 322L Experiment 1: Negative and Positive Feedback in Op
ECE 322L Experiment 1: Negative and Positive Feedback in Op

... low-frequency sine wave at the input, display Vout as a function of Vin on the oscilloscope. (In order to ensure that you have a “low-frequency,” you might try a range of orders of magnitude of the frequency.) Determine the voltage gain Vout /Vin and the dynamic range of your circuit. Compare your m ...
ijireeice pdf
ijireeice pdf

... longer be contained to the small portion of the system. Sometimes these small events or disturbances can be amplified to a system wide effect. Therefore for this purpose many techniques have been developed to survive the power system during disturbances and to continue its operation [2]. Recent deve ...
GEAFOL converter transformers
GEAFOL converter transformers

Shure KSM32 - All Pro Sound
Shure KSM32 - All Pro Sound

... Embossed, high-compliance diaphragm provides extended low frequency response Ultra-thin, 2.5 mm, gold-layered, low mass, Mylar R diaphragm for excellent transient response 15 dB attenuation switch for handling extremely high sound pressure levels (SPL) Switchable low-frequency filter provides greate ...
ABB drives - Technical guide No. 5 - Bearing currents in modern AC
ABB drives - Technical guide No. 5 - Bearing currents in modern AC

... drive systems may generate high frequency (HF) current pulses through the bearings. If the energy of these pulses is sufficiently high, metal transfers from the ball and the races to the lubricant. This is known as electrical discharge machining or EDM. The effect of a single pulse is insignificant, ...
Creating High Voltage Outputs
Creating High Voltage Outputs

... For applications that require high voltage outputs, multiple converters may be used in a series output configuration to produce a single output voltage that is the sum of all of the converter out­puts in the array. The following describes two approaches to produce a high volt­age output. The first s ...
bibilography
bibilography

Basic Concepts
Basic Concepts

IB_questions_Work_energy_power
IB_questions_Work_energy_power

... An engine takes in an amount E of thermal energy and, as a result, does an amount W of useful work. An amount H of thermal energy is ejected. The law of conservation of energy and the efficiency of the engine are given by which of the following? Law of conservation of energy ...
SE-240 Specs - Global Power Products
SE-240 Specs - Global Power Products

... management to stay with the type of communications technology that they currently have in place. Groups that are undecided as to the communications technology they plan to use can install the SE-240 first as a basic LCD readout energy meter and deal with the communications issue later. Many communic ...
DC power monitor - Texas State University
DC power monitor - Texas State University

... Emerson is a diversified global manufacturing company.  Provides innovative solutions to customers in the following areas: Process Management Industrial Automation  Network Power  Climate Technologies  Commercial & Residential Solutions ​ ...
Q25085089
Q25085089

... coupled FB DC-DC Converter . In this application, the converter is fed from a three phase AC supply , and the complete system includes a diode rectifier, a high – voltage IGBT based H-bridge , a highfrequency center-tapped-output transformer, associated full wave rectifier and an LC output filter. T ...
485 Picoammeter
485 Picoammeter

... low-cost, highly sensitive, easy-to-use instrument. The 485 measures DC current on seven ranges covering 10 decades from 100fA to 2mA. The input can withstand overloads as high as 1000V (with 100kΩ limiting resistor) for flexibility in a wide range of applications in test, research, and student labs ...
Analysis of the OPA569 Bridge
Analysis of the OPA569 Bridge

AK8111 - Asahi Kasei Microdevices
AK8111 - Asahi Kasei Microdevices

... Note1) A critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliabi ...
A Soft-Switching Isolated Bidirectional Converter Fed
A Soft-Switching Isolated Bidirectional Converter Fed

... there is no choice but to either develop a special power supply or to switch between 2 DC-DC converters, one for step up conversion and the other for step down conversion. However, the new EZA series converters are state-of-the-art power supplies that realize both step up and step down power convers ...
english - KEK Concept GmbH
english - KEK Concept GmbH

EUT 1040 Lecture 10: Programmable Logic Controllers
EUT 1040 Lecture 10: Programmable Logic Controllers

... – Makes use of Twisted Pair lines - 1 pair for transmit, one pair for receive (4 Lines vs. 3) ...
DTMG Rev E
DTMG Rev E

... moulded output. Connection on the moulded output can be made by 4 mm banana ...
Monitoring technique
Monitoring technique

... nominal current is important, but also the much higher starting current. The overload characteristic of the current input allows to connect motors with nominal current up to 4..5 A depending on the starting conditions. This is at 3 AC 400 V a motor load of 1.5 … 2.2 kW. It is important that the moto ...
MQ 90S
MQ 90S

... The MQ 90S subwoofer is innovative and compact.Unlike competing models, that require all of the satellite speakers to be wired directly to the subwoofer, the MQ 90S can be parallel wired anywhere along the constant voltage wire pair. The high power transducer is a unique 8” woofer design that achiev ...
Sky Wing
Sky Wing

... combustion gas extraction. Ventilators in the high temperature version are tested for fire resistance and withstand 300°C for three hours, provided that they are not operated at speeds higher than their max. permissible speed. See Table below. ...
Sorensen SG Series 4–150 kW 10–800 V 6–6000 A
Sorensen SG Series 4–150 kW 10–800 V 6–6000 A

... available down to 20VDC output in a 3u package the SG leads the industry in power density. The power density is enhanced by a stylish front air intake allowing supplies to be stacked without any required clearance between units. At the heart of the SG series is a 5 kW power module. Depending on the ...
LPT100-M Series Electrical Specifications
LPT100-M Series Electrical Specifications

< 1 ... 1071 1072 1073 1074 1075 1076 1077 1078 1079 ... 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