• 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
ON-LINE CONDITION MONITORING OF MOTORS USING
ON-LINE CONDITION MONITORING OF MOTORS USING

Maxstar 200 STR
Maxstar 200 STR

MC3479 Stepper Motor Driver
MC3479 Stepper Motor Driver

Diode bridge rectifier class notes
Diode bridge rectifier class notes

... (V peak  Vmin ) = V peak to  peak ripple  ...
10EE36-Electric Power Generation(EPG) Unit 7 lecture
10EE36-Electric Power Generation(EPG) Unit 7 lecture

... company, explain the type of information you need and ask for the engineering department. It may be helpful to explain why you need the information. The power company will be able to supply this information for the point in the power system where their responsibility for the power system ends and th ...
MRI – FACTS Network - Fault-Tolerant and Secure Power Grid
MRI – FACTS Network - Fault-Tolerant and Secure Power Grid

... introduction of FACTS devices can utilize the proposed decentralized control to mitigate cascading failures in the power system. Background on FACTS In a traditional vertically integrated utility structure, the scheduling of generation was the primary means for adjusting power flow through the netwo ...
RESISTORS FOR ENERGY METERING
RESISTORS FOR ENERGY METERING

... by contributing to series inductance, but also by reducing the Q factor of the input network, thereby minimising the effect of any resonances. Critically, it serves to limit the peak MOV current during a lightning strike transient, reducing the stress on the MOV by dissipating a share of the pulse e ...
FJX3 008R NPN Epitaxial Silicon Transistor
FJX3 008R NPN Epitaxial Silicon Transistor

from 1 to 6 kVA
from 1 to 6 kVA

... • Tailored backup time at a competitive price This is an ideal range to avoid over-sizing your electrical protection. The number of batteries is limited and the E4 LCD LT range insures a backup time from 3 to 6 minutes at 75% load. There is no extended backup time available. • Smart functions • The ...
Long Lifetime DC-Link Voltage Stabilization Module for Smart Grid Application  Huai Wang
Long Lifetime DC-Link Voltage Stabilization Module for Smart Grid Application Huai Wang

... capacitor is connected to the output of the first power converter. The capacitor voltage vC is composed of dc component VC and ripple voltage ΔvC. The peakto-peak value of ΔvC is 2|ΔvC|. A voltage source vab is connected in series between the dc-link capacitor C and output vd. It generates a voltage ...
Crompton Instruments Integra Ci3 Digital Metering System
Crompton Instruments Integra Ci3 Digital Metering System

... Integra Ci3 dms is built to high quality standards utilising the latest ‘state-of-the-art’ microprocessor and manufacturing technology. Designed, developed and manufactured in the UK, the Integra Ci3 dms builds on Crompton Instruments’ long established reputation for metering product quality. The pr ...
Crystal(R) AC Power Supplies: 60, 100, 120, 150, and 180 kW
Crystal(R) AC Power Supplies: 60, 100, 120, 150, and 180 kW

... stability ensure the highest accuracy and the best run-to-run repeatability of any supply on the market. ...
CD35455460
CD35455460

... Three phase voltage-fed PWM inverters are recently growing popularity for multi-Megawatt industrial drive applications. The main reasons for this popularity are easy Sharing of large voltage between the series devices and the improvement of the harmonic quality at the output as compared to a two lev ...
A 200MHz to 6GHz Direct Conversion I/Q Modulator Achieves 30.9
A 200MHz to 6GHz Direct Conversion I/Q Modulator Achieves 30.9

... The LTC5588-1 offers image suppression of -56.6dBc at 2.14GHz. In addition, its carrier leakage is -39.6dBm while delivering 5dBm signal power to its output without calibration. Over the operating temperature range from -40°C to 85°C, both parameters exhibit stable behavior, varying only about +/-3d ...
200V Difference Amplifier with Common
200V Difference Amplifier with Common

... pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI d ...
Stepper Motor Driver MC3479
Stepper Motor Driver MC3479

... change a full step with each clock cycle, with the sequence direction depending on the CW/CCW input. There are four steps (Phase A, B, C, D) for each complete cycle of the sequencing logic. Current flows through both motor coils during each step, as shown in Figure 7. When taken to a Logic “1” (>2.0 ...
CN-0156 用于AD9834波形发生器(DDS)的幅度控制电路
CN-0156 用于AD9834波形发生器(DDS)的幅度控制电路

... The DAC used in this example is the 12-bit AD5620, a member of the nanoDAC family. The AD5620 contains an on-chip 5 ppm/°C reference, has an SPI interface, and is available in an 8-lead SOT-23 or MSOP package. The low power (2.2 mW @ 3.3 V) and small size of the AD5620 (8-lead SOT-23) provide an att ...
II. Wind Turbine Topologies
II. Wind Turbine Topologies

... Most modern WTGs are designed for variable speed operation. Variable-speed wind turbines have many advantages over fixed-speed generation such as increased energy capture, operation at maximum power point, enhanced efficiency and power quality, and reduced mechanical stresses and audible noise at lo ...
Transformerless UPS : Concepts and Capabilities
Transformerless UPS : Concepts and Capabilities

... Battery galvanic isolation in the UPS can provide a false sense of security, and should not be depended on as a safety feature • Battery terminals should be treated with the same caution and respect given to any AC terminal in the system If a UPS only has an input transformer, then the battery is no ...
Experiment1_EE391_F13
Experiment1_EE391_F13

Datasheet - Littelfuse
Datasheet - Littelfuse

... In most applications, the transient suppressor device is placed in parallel with the equipment or component to be protected. In this situation, there is a time delay associated with the capacitance of the device and an overshoot condition associated with the inductance of the device and the inductan ...
Microelectromechanical Devices
Microelectromechanical Devices

Get cached
Get cached

... have firstly reported the no-load rotation characteristics of the HTS-ISM based on the analysis [11] and the experiment [12]. And then, the load characteristics for different HTS cage windings are shown in [13], [14], and [15], respectively. Especially, we have shown the relationship between the mea ...
G050486-00 - DCC
G050486-00 - DCC

... this kind of rectifier gives a DC voltage which is the peak peak voltage of the wave coming from the transformer (a SMALL voltage drop is due to the diodes). G050486-00-R ...
PC-6011SD - Test and Measurement Instruments CC
PC-6011SD - Test and Measurement Instruments CC

... seconds. Just slot in the SD card into the computer, it can down load the all the measured value with the time information ( year, month, data, hour, minute, second ) to the Excel directly, then user can make the further data analysis by themselves. * Allow save the LCD screen picture to the photo B ...
< 1 ... 924 925 926 927 928 929 930 931 932 ... 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