• 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
a  Engineer To Engineer Note EE-168
a Engineer To Engineer Note EE-168

... Note that the three capacitors, C1, C2 and C3, must be ‘RF’ types with low loss dielectrics at the frequencies being used. Examples of capacitors with suitable dielectrics include silver mica, polystyrene and ceramic NP0. The inductor, L1, must also be chosen for low RF losses (i.e. high ‘Q’). At th ...
STATIC SYNCHRONOUS GENERATOR WITH SLIDING DROOP
STATIC SYNCHRONOUS GENERATOR WITH SLIDING DROOP

... machine. Thus, adequate frequency and voltage control is achieved in a microgrid involving distributed generation (DG), without the need of a communication-system. In grid-connected microgrids, DG units mainly perform active-power supply and voltage regulation, whereas the system frequency is mainly ...
The new electronic ballast generation
The new electronic ballast generation

Document
Document

MAX1106/MAX1107 Single-Supply, Low-Power, Serial 8-Bit ADCs General Description
MAX1106/MAX1107 Single-Supply, Low-Power, Serial 8-Bit ADCs General Description

... track/hold (T/H), voltage reference, clock, and serial interface. The MAX1106 is specified from +2.7V to +3.6V and consumes only 96µA. The MAX1107 is specified from +4.5V to +5.5V and consumes only 107µA. The analog inputs are pin-configurable, allowing unipolar and singleended or differential opera ...
Wind as a renewable source of energy
Wind as a renewable source of energy

... Globally, the long-term technical potential of wind energy is believed to be 5 times current global energy consumption or 40 times current electricity demand. This would require covering 12.7% of all land area with wind turbines. This land would have to be covered with 6 large wind turbines per squa ...
Power Distribution Systems
Power Distribution Systems

MX7841 Octal, 14-Bit Voltage-Output DAC with Parallel Interface General Description
MX7841 Octal, 14-Bit Voltage-Output DAC with Parallel Interface General Description

... precision amplifiers. This allows the flexibility of using resistive dividers to set the reference voltages. Because of the relatively high multiplying bandwidth of the reference input (188kHz), any signal present on the reference pin within this bandwidth is replicated on the DAC output. The DUTGND ...
Relays General information
Relays General information

MapDCCD Version 2 Installation and setup guide
MapDCCD Version 2 Installation and setup guide

... approximately 11 to 14 Volts when the brake pedal is pressed and approximately 0 Volts when the brake pedal is released. The brake pedal logic polarity can be reversed in the MapDCCD control software if required. The brake pedal input signal can be disabled in the MapDCCD control software if it is n ...
Hand-Drawn Circuit Diagrams for all circuits that are to
Hand-Drawn Circuit Diagrams for all circuits that are to

1 literatura - Vysoké učení technické v Brně
1 literatura - Vysoké učení technické v Brně

USB 2.0 Protection and IPAD solutions
USB 2.0 Protection and IPAD solutions

Installation Instructions
Installation Instructions

Super Barrier Rectifier—A New Generation of Power Diode
Super Barrier Rectifier—A New Generation of Power Diode

... SBR diodes, while in Schottky diodes, it is fixed to the metals that make good contact with silicon. The SBR diodes typically have lower leakage current compared with the Schottky for the same forward characteristic, due to the pinch-off effect and absence of image charge potential barrier reduction. ...
Evaluation Board User Guide UG-288
Evaluation Board User Guide UG-288

... for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, ...
Manual Model 1268 - Curtis Instruments
Manual Model 1268 - Curtis Instruments

... ✓ Two user-selectable vehicle operating personalities, with vehicle top speed controlled and limited in each mode ✓ Motor parameters are programmable to match the characteristics of the specific motor being used ✓ Vehicle speed control is enhanced through feedback from a Hall effect speed sensor ✓ An ...
Lecture 6: Dynamic Power
Lecture 6: Dynamic Power

Safe Testing and Measuring According to IEC/EN - Multi
Safe Testing and Measuring According to IEC/EN - Multi

Line Power System - Rackmount Solutions
Line Power System - Rackmount Solutions

... Line Power System controller QS941A System Controllers The Line Power System QS912A/QS9010 upstream converter shelf is compatible with the QS941A Controller. The controller resides in the upstream fan shelf and monitors and controls system components including redundant fan trays, converters, and co ...
BDTIC www.BDTIC.com/infineon  E l e c t r i c  ...
BDTIC www.BDTIC.com/infineon E l e c t r i c ...

... power module. The chip can be driven within its specified blocking voltage up to twice its nominal current rating, since the maximal junction temperature defined for switching operation is not exceeded. The safe operating area of the power module is limited due to stray inductances. With increasing ...
DRV632 数据资料 dataSheet 下载
DRV632 数据资料 dataSheet 下载

... Single-supply line-driver amplifiers typically require dc-blocking capacitors. The top drawing in Figure 6 illustrates the conventional line-driver amplifier connection to the load and output signal. DC blocking capacitors are often large in value. The line load (typical resistive values of 600 Ω to ...
Schottky diode IV Characteristics
Schottky diode IV Characteristics

... switches from conducting to non-conducting state. Where in a p-n diode the reverse recovery time can be in the order of hundreds of nanoseconds and less than 100 ns for fast diodes, Schottky diodes do not have a recovery time, as there is nothing to recover from (i.e. no charge carrier depletion reg ...
60708-124 LARGE PTO -WInpower
60708-124 LARGE PTO -WInpower

... The WINPOWER PTO drive generator will provide, depending on the unit purchased, 120/240V single phase, 120/240V three phase, 120/208 three phase or 277/480 three phase 60Hz electrical service when direct-driven. Tractor or vehicle power take-off shafts, can be used for driving these generators. NOTE ...
SP3227E 数据资料DataSheet下载
SP3227E 数据资料DataSheet下载

... The SP3224E/3225E are 2-driver/2-receiver devices and the SP3226E/SP3227E are 1driver/1-receiver devices. All are ideal for computer peripherals, point-of-sale equipment, consumer and embedded applications. These devices use an internal high-efficiency, charge-pump power supply that requires only 0.1 ...
< 1 ... 150 151 152 153 154 155 156 157 158 ... 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