• 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
Test & Measurement Instrumentation Line Card Technology for all your measurement needs...
Test & Measurement Instrumentation Line Card Technology for all your measurement needs...

... and DC power source families. Power Sources are used in automatic testing equipment and bench top applications including avionics testing, IEC testing, Mil-std-704 Avionics, DO-160 Shipboard testing and power supply test applications. ...
Make an electric motor
Make an electric motor

Template - Transactions on Electrical Engineering
Template - Transactions on Electrical Engineering

... proposed control is shown in Fig. 6. The MLC interface which was used as the control system with the DSP and FPGA is shown in Fig. 7. The measured phase voltage, phase current and voltage of the flying capacitors are shown for a low frequency (lower than 8 Hz) and for a higher frequency (50 Hz). We ...
SS0503SH : Schottky Barrier Diode, 30V, 0.5A
SS0503SH : Schottky Barrier Diode, 30V, 0.5A

... ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at ww ...
Combinations of Capacitors
Combinations of Capacitors

... Transformers and AC to DC conversion Part 1. AC Peak and RMS. Transferring energy over large distances is best done using alternating current (AC) at high voltages. But most of the devices we will be interested in need direct current (DC) at relatively small voltages. One first reduces the voltage b ...
Lab 6 - La Salle University
Lab 6 - La Salle University

PDF
PDF

... range of PV voltages. Input to these z source for on grid or off grid power demand . A PV cell inverter can be the voltage source, current source or can produce a voltage of 0.5V to 0.6V and 1W to fuel cell stack or rectified dc voltage etc In an 1.5W at standard test conditions ie..,25 degree and v ...
Template for Sanshodhan-XI - St. Francis Institute of Technology
Template for Sanshodhan-XI - St. Francis Institute of Technology

... AC bridges have been known for quite some time for finding the equivalent circuits of coils and capacitors [1]. These bridges are now revisited in the context of measuring quality factor (Q) of the coils and the dissipation factor (tan  ) of the capacitors. One method of measuring tan  of a capaci ...
Principles of Conversion - Operating Tech Electronics, Inc.
Principles of Conversion - Operating Tech Electronics, Inc.

... These also are imported from Taiwan and offer exceptional value for money and excellent quality. Being fully boxed, they are easier to mount safely within an enclosure. The standard range covers 40 watts to 320 watts and one to four outputs. In addition, we can modify the products to customise them. ...
Thesis Presentation for:
Thesis Presentation for:

... • To minimize low losses to achieve high efficiency • Optimize wire size for skin-effect (472kHz is 31 AWG). • 31 AWG would not handle the current • The approach of use parallel strands for current was tested during the Preliminary Design Work • It was found at lower strand count the losses were acc ...
AC and DC Drives for Oil Drilling
AC and DC Drives for Oil Drilling

... drives can demand more power than is currently available. In this case the diesel generator has to be reliably protected. However, an additional more stringent requirement is that the drives operate automatically without demanding more power than is available. Although the generator can protect itse ...
Performance evaluation of sinusoidal and Space Vector Pulse
Performance evaluation of sinusoidal and Space Vector Pulse

... SPWM uses many more square waves (at a much higher frequency) to mimic the shape of a sine wave. Sinusoidal PWM technique, gives an output wave that is very easy to filter into a pure sine wave because very little energy has to be absorbed and later released during the cycles of the higher frequency ...
Aries Digital Servo Drives
Aries Digital Servo Drives

Level-Shifting MOSFET Driver
Level-Shifting MOSFET Driver

... used to control the DC/DC buck converter switch. Figure 1 shows the level-shifting MOSFET driver implemented with test circuitry as indicated by the dashed boxes. The PWM signal is generated by using the wire-ORed open-collector pins to pull down the solar panel voltage through a pull-down resistor. ...
Document
Document

... ■ Space savings, accurate measurement and optimized functions ...
Chapter 6 Overview
Chapter 6 Overview

RF5222 3.0V TO 4.2V, 2.4GHz TO 2.5GHz LINEAR POWER AMPLIFIER Features
RF5222 3.0V TO 4.2V, 2.4GHz TO 2.5GHz LINEAR POWER AMPLIFIER Features

... has integrated input and interstage matching components thus allowing minimal bill of materal (BOM) parts count in end applications. The RF5222 is designed primarily for IEEE802.11b/g/n WLAN applications where the available supply voltage and current are limited. This amplifier will operate to (and ...
Should You Use Current or Voltage in Analog
Should You Use Current or Voltage in Analog

... DC Current (4-20mA) In contrast, a DC current loop offers several advantages in industrial settings. This signal is not as susceptible to electrical interference from high voltage AC, motors, pumps, or relays, nor is it susceptible to signal loss due to the length of the wiring run (voltage drop). A ...
- LSBU Research Open
- LSBU Research Open

... systems, and the like. Multi-level inverters are particularly favoured for high-power applications [1]. One of the major advantages of multi-level design is output waveform harmonic distortion reduction without increasing the switching frequency or falling back to low power output scenarios. The out ...
EVLVIP37LE5V3A
EVLVIP37LE5V3A

... This board implements a 15 W single-output wide range mains power supply to be used as an auxiliary adapter in applications such as LCD, plasma or LED TVs, desktop computers, etc., when the main power supply is OFF or in standby mode and the auxiliary power supply must provide energy only to some sp ...
KFD2-STV4-2-1 SMART Transmitter Power Supply Connection
KFD2-STV4-2-1 SMART Transmitter Power Supply Connection

... 2-channel signal conditioner 24 V DC supply (Power Rail) Input 2-wire SMART transmitters Output 0/1 V ... 5 V Terminal blocks with test sockets Up to SIL 2 acc. to IEC 61508 ...
J0460455055
J0460455055

... one of the most important topologies in the family of multilevel and multi-pulse inverters. The cascade topology allows the use of several levels of DC voltages to synthesize a desired AC voltage. The DC levels are considered to be identical since all of them are fuel cells or photovoltaics, batteri ...
HCPL3700, An optocoupler with a difference
HCPL3700, An optocoupler with a difference

Wireless Starting Of 3 Phase Induction Motor
Wireless Starting Of 3 Phase Induction Motor

... conduct current only in one direction), TRIACs are bidirectional and so current can flow through them in either direction. Another difference from SCRs is that TRIACs can be triggered by either a positive or a negative current applied to its gate electrode, whereas SCRs can be triggered only by curr ...
ii In the recent days, the increased emphasis is being given on the
ii In the recent days, the increased emphasis is being given on the

< 1 ... 1102 1103 1104 1105 1106 1107 1108 1109 1110 ... 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