• 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
Lokal fulltext - Chalmers tekniska högskola
Lokal fulltext - Chalmers tekniska högskola

... developed. The estimation method provides a fast, selective and adaptive estimation of the lowfrequency electromechanical oscillatory components during power system disturbances. This allows to develop an independent multimode POD controller, which enables the use of multiple compensators without an ...
PMM8920 Power Management Module Device Specification
PMM8920 Power Management Module Device Specification

... Qualcomm Snapdragon is a product of Qualcomm Technologies, Inc. Other Qualcomm products referenced herein are products of Qualcomm Technologies, Inc. or its other subsidiaries. DragonBoard, Qualcomm, and Snapdragon are trademarks of Qualcomm Incorporated, registered in the United States and other co ...
AD5737 数据手册DataSheet下载
AD5737 数据手册DataSheet下载

... minimum on-chip power dissipation. ...
Broadband Catalog 2012
Broadband Catalog 2012

... Alpha’s XM3-HP CableUPS is the most innovative and intuitive solution to address the ever-increasing power demands of today’s sophisticated communication networks. The XM3-HP features the highest line mode and inverter efficiency with the tightest output voltage regulation, leading to decreased util ...
NEW TRIACS: IS THE SNUBBER CIRCUIT NECESSARY?
NEW TRIACS: IS THE SNUBBER CIRCUIT NECESSARY?

... improvement of the triac immunity against transients in the off state ; compensation of latching current at turn on (not dealt in this paper). Switching on and voltage perturbations can provoke overvoltages and fast voltage variations across the triac : this one could break over when the overvoltage ...
BD00IC0MEFJ-LB
BD00IC0MEFJ-LB

... It is recommended that a capacitor is placed nearby pin between Input pin and GND, output pin and GND. A capacitor, between input pin and GND, is valid when the power supply impedance is high or drawing is long. Also as for a capacitor, between output pin and GND, the greater the capacity, more sust ...
NEW TRIACS: IS THE SNUBBER CIRCUIT NECESSARY?
NEW TRIACS: IS THE SNUBBER CIRCUIT NECESSARY?

... improvement of the triac immunity against transients in the off state ; compensation of latching current at turn on (not dealt in this paper). Switching on and voltage perturbations can provoke overvoltages and fast voltage variations across the triac : this one could break over when the overvoltage ...
HV - Stancor Pumps
HV - Stancor Pumps

The Model 505 CT/PT Analyzer
The Model 505 CT/PT Analyzer

... Radian Research, Inc. Radian Research, Inc. www.radianresearch.com an employee owned company ...
ZLLS410 Product Summary Features and Benefits
ZLLS410 Product Summary Features and Benefits

... Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: ...
Basics of Linear Fixed Resistors
Basics of Linear Fixed Resistors

... remains constant over a wide frequency range (white noise), current noise declines with rising frequency. IEC 60195 lays down the measurement arrangement and procedure, in order to ensure that noise voltage specifications are comparable. This standard also includes a code number for the noise of an ...
AH49F Description Pin Assignments
AH49F Description Pin Assignments

... effect sensor, the circuit will drive the output voltage higher. In contrary, a North magnetic pole will drive the output voltage lower. The variations of voltage level up or down from the quiescent output voltage (the null voltage) are symmetrical and is proportional to the magnetic flux density. I ...
Induction Units with Medium Frequency Technology
Induction Units with Medium Frequency Technology

SP3245E 数据资料DataSheet下载
SP3245E 数据资料DataSheet下载

... only 0.1µF capacitors for 3.3V single-supply operation. This charge pump and Sipex’s driver architecture allow the SP3244E/3245E to deliver compliant RS-232 performance from a power supply ranging from +3.0V to +5.5V. At voltages between +2.7V and +3.0V the driver outputs are compliant with RS-562 a ...
PAM2812ABR - Diodes Incorporated
PAM2812ABR - Diodes Incorporated

S0410C
S0410C

... Selectable Candela Settings of 15, 30, 75 or 110 cd. Ceiling mount models are available in 15, 30, 75 or 95cd Low current draw with temperature compensation to reduce power consumption and wiring costs. Strobes produce 1 flash per second over the regulated voltage range 12 and 24 VDC models with wid ...
Load Cell Fault Finding Guide (AN1)
Load Cell Fault Finding Guide (AN1)

... The following error messages may be seen when using AIC load cell input instruments. Refer to the monitor instruction manual for further information if required. CAL ERR - This indicates that one of the calibration points has caused an overrange error in the analog to digital converter. Change the m ...
User Manual
User Manual

... 4.3.1 Mains terminals (X1 to X4). .................................................................................................... 17 4.3.2 Independent static bypass line connection, terminals (X14 to X17). With dual input. ................... 18 4.3.3 Output, terminals (X6 to X9). ............. ...
DS3994 4-Channel Cold-Cathode Fluorescent Lamp Controller General Description
DS3994 4-Channel Cold-Cathode Fluorescent Lamp Controller General Description

... it very simple and inexpensive to provide this enhancement. In addition, staggering the bursts from each channel can be used to minimize current ripple on the display power supply, which is especially important for larger LCDs. The relative stagger between each of the channels is programmable, so th ...
MAX9424–MAX9427 Lowest Jitter Quad PECL-to-ECL Differential Translators General Description
MAX9424–MAX9427 Lowest Jitter Quad PECL-to-ECL Differential Translators General Description

... close to the device as possible. Use the same bypass capacitor configuration between each VEE pin and VGG. In high-frequency, high-noise environments, add a 0.1µF capacitor in parallel with each 0.01µF capacitor. Use multiple vias when connecting the bypass capacitors to VGG (ground). This reduces t ...
ppt
ppt

Instruction manual Unitor Welding Inverter UWI 203 TP
Instruction manual Unitor Welding Inverter UWI 203 TP

BD00GA3MEFJ-M
BD00GA3MEFJ-M

... It is recommended that a capacitor is placed nearby pin between Input pin and GND, output pin and GND. A capacitor, between input pin and GND, is valid when the power supply impedance is high or drawing is long. Also as for a capacitor, between output pin and GND, the greater the capacity, more sust ...
The Effective Insulation of Masts and Towers for
The Effective Insulation of Masts and Towers for

... its associated insulators is generally only a small fraction of the maximum working load and of the ultimate strength of the guy wire and of the insulators. ...
Elektroniczne Układy i Systemy Zasilania
Elektroniczne Układy i Systemy Zasilania

< 1 ... 75 76 77 78 79 80 81 82 83 ... 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