• 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
EMI RFI Filters Selection Guide
EMI RFI Filters Selection Guide

... the most efficient and cost effective solution for filtering multiple lines into or between different system compartments. For higher frequency applications (above 50MHz), filter plates can be more effective than typical surface mount solutions. The natural shielding quality of the plates creates an ...
ieee apec electrical paper - Allen
ieee apec electrical paper - Allen

manual - Global Test Supply
manual - Global Test Supply

... 0.015% of reading and 0.001 mA resolution, the LC-100 has the highest accuracy in its class. Unique features, such as a "% Error" function, which eliminates manual error calculation and allows the display of the actual versus ideal error at any calibration point, put the LC-100 way beyond similar in ...
IV. Basic concept of a torque estimation
IV. Basic concept of a torque estimation

objective - Technicalsymposium
objective - Technicalsymposium

... algorithms for different sized systems and compare the same with that of GSLF algorithm. (ii) To investigate the effect of variation of voltage control parameters such as generator voltage magnitude setting, off nominal tap ratio of transformer and MVAR injections of shunt capacitors/inductor on the ...
Questions - Science @ St John`s
Questions - Science @ St John`s

... Bigger/larger magnet is insufficient. ...
Evaluates:  MAX17062 MAX17062 Evaluation Kit General Description Features
Evaluates: MAX17062 MAX17062 Evaluation Kit General Description Features

Brochure Loadbank
Brochure Loadbank

... of 625, 1250, 1875, 2500, 3300 and 6000 kVA single units, which can also be paralleled together to provide any large load capacity. Each loadbank is designed to operate at variable power factor and from 400 to 480 kV at 50 and 60 Hz. These loadbanks are housed in standard ISO 10 and 20 foot containe ...
SIB 100-TS Series - SIBO Electronic Vertriebs GmbH
SIB 100-TS Series - SIBO Electronic Vertriebs GmbH

... equal models of SIB 105-75E-TS and SIB 110-75E-TS can be interconnected. Therefore junction box 1P2-X is necessary. For serial operating to extend voltage, two instruments can connected in bridge circuit ...
T2200 3 Phase Overcurrent Relay
T2200 3 Phase Overcurrent Relay

Design Considerations for an LLC Resonant Converter
Design Considerations for an LLC Resonant Converter

... ƒ The resonant inductor (Lr) and resonant capacitor (Cr) are in series ƒ The resonant capacitor is in series with the load 9 The resonant tank and the load act as a voltage dividerÆ DC gain is always lower than 1 (maximum gain happens at the resonant frequency) 9 The impedance of resonant tank can b ...
emt 212 ch.6_power supply (voltage regulator)
emt 212 ch.6_power supply (voltage regulator)

... Several types of both linear (series and shunt) and switching regulators are available in integrated circuit (IC) form. Single IC regulators contain the circuitry for: (1) reference source, (2) comparator amplifier, (3) control device, and; (4) overload protection. Generally, the linear regulators a ...
ISSN (Online): 2347-2820, Volume -1, Issue-2, 2013
ISSN (Online): 2347-2820, Volume -1, Issue-2, 2013

... Controlled Series Compensators (TCSC), the Static Synchronous Series Compensators (SSSC), and the Unified Power Flow Controller (UPFC). ...
Improving the Full-bridge Phase-shift ZVT Converter
Improving the Full-bridge Phase-shift ZVT Converter

... with a reapplied dv/dt that may exceed 12V/ns can precipitate destructive second breakdown of the parasitic NPN bipolar transistor present in all vertical MOSFET structures. The onset of such a phenomenon is clearly visible during the rise of drain-source voltage VDS(M4) (b) in Fig. 7. Here, the tim ...
What are clippers circuits?
What are clippers circuits?

... Section (b) shows the same clipper configuration as it is shown in (a).but the diodes is replaced with its equivalent circuit model. When the input signal goes positive, the anode terminal of diode attains a higher potential than cathode. This makes the diode forward biased. The diode in reverse bia ...
TBD62783A
TBD62783A

... for a moment. Do not exceed any of these ratings.Exceeding the rating(s) may cause device breakdown, damage or deterioration, and may result in injury by explosion or combustion. (2) Do not insert devices in the wrong orientation or incorrectly.Make sure that the positive and negative terminals of p ...
Starter motor control system
Starter motor control system

Exclusive Technology Feature Synchronous Zeta Converter
Exclusive Technology Feature Synchronous Zeta Converter

g Accelerometers ADXL78 i
g Accelerometers ADXL78 i

... active; therefore, the sensor displacement causes a change in VOUT. The ADXL78 self-test function is a comprehensive method of verifying the operation of the accelerometer. Because electrostatic force is independent of the polarity of the voltage across capacitor plates, a positive voltage is applie ...
AC/DC Current Probe Model SL261 Features
AC/DC Current Probe Model SL261 Features

... current measurement capabilities using Hall effect technology. It measures from a few mA to over 100A. The “screw driver” shape, with its narrow elongated prod, was chosen to permit probing in crowded cable bundles, or measuring in tight areas such as on circuit boards, motor controllers and automot ...
Flash ADC Lab
Flash ADC Lab

... Step 3. Next, add the connections from the reference nodes (A,B,C) on your Voltage series circuit to each of the inverting (-) terminals of the Op Amps as shown in Figure 1 (the 3 Op Amps have already been mounted on your Quad Board). Also add the connections from the reference supply to +Vcc and –V ...
Physics 160 Lecture 6
Physics 160 Lecture 6

... Design an emmitter-follower with a single 15 V supply and A/C input coupling, to operate in the frequency range above 100 Hz. The output should be biased at roughly half of the supply voltage. Assume a 1 kohm source impedance. Design to a 2.5 mA quiescent current. Check that the gain with the stated ...
18241 Demonstrate knowledge of basic electronic systems
18241 Demonstrate knowledge of basic electronic systems

... Demonstrate knowledge of a resistor-capacitor circuit in response to a step voltage. ...
AO21260268
AO21260268

... digital computer simulation. It is shown that, by application of fuzzy AVR to the power systems commendable dynamic performance can be obtained. Flexible AC Transmission Systems (FACTS), based on either Voltage or Current Source Converters (VSC/CSC), can be used to control steady-state as well as dy ...
Lab 4: Bipolar Junction Transistors (BJT)
Lab 4: Bipolar Junction Transistors (BJT)

... 3. Prelab calculations for predicted IC, and the maximum load. Compare to measured values. 4. Transistor operating curves (curve tracer) with your actual data added to the plot. Indicate where current source starts to break down (collector current no longer constant). 5. Explain what’s happening on ...
< 1 ... 766 767 768 769 770 771 772 773 774 ... 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