• 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
CERN_Talk_POCPA=Ver1.0
CERN_Talk_POCPA=Ver1.0

... The TE/EPC Group Structure is reflecting the procurement strategy In charge of the design, development, procurement, construction, installation, operation and maintenance of electrical power systems for all accelerators, transfer lines, experimental areas and tests facilities at CERN ...
FSFR2100 — Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converters
FSFR2100 — Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converters

Table of Contents - Industrial Manufacturing
Table of Contents - Industrial Manufacturing

... by the primary coil induces a voltage into the secondary coil, which supplies power to the connected load. The load in this case is the entire electrical distribution network including all residential, commercial, and industrial customers. A step-up transformer is used when it is desirable to step v ...
Bip Transistor 30V 700mA VCE(sat);190mV NPN Single MCPH3
Bip Transistor 30V 700mA VCE(sat);190mV NPN Single MCPH3

... Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment. The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpos ...
Pure Class A operation delivers quality power: 60 watts
Pure Class A operation delivers quality power: 60 watts

... features fully balanced signal paths realized with ultra low noise instrumentation amplifier topology in discrete configuration. MCS+ design and current feedback in amplification circuitry deliver S/N ratio and sound quality on a level unrivaled by any stereo power amplifier. Massive power supply an ...
TPS62684 - Texas Instruments
TPS62684 - Texas Instruments

... Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolu ...
Technical Specifications
Technical Specifications

... 0 to 10,000 feet ...
Implementation of an Economical and Compact Single
Implementation of an Economical and Compact Single

... The high voltage load applications need very compact generators for the production of fast rising high voltage pulses and are invited in many applications including plasma soft X-ray, ion beam, PEF technology and microwave generators. From the right beginning several technologies have been introduce ...
HMC855LC5
HMC855LC5

... the data into other devices. The demux is DC coupled supporting broadband operation. All clock and data inputs to the HMC855LC5 are CML and terminated on-chip with 50 Ohms to the positive supply, GND, and may be DC or AC coupled. The differential outputs are source terminated to 50 Ohms and may also ...
Pulse Width/Pulse Train Module
Pulse Width/Pulse Train Module

... total number of pulses to output (includes those generated during ramp up and down), and the frequency at run time. The module generates a pulse train output that ramps up from a minimum frequency (approx 40 Hz) to the user programmed maximum frequency within the ramp-up time. The module would ramp ...
Wind converter
Wind converter

Film capacitors - Power Factor Correction
Film capacitors - Power Factor Correction

Understanding Energy Efficient Motors
Understanding Energy Efficient Motors

... Reliable Solutions Today! ...


... in which Tj(S/D) and Ptot(S/D) are the junction temperature and the total power losses of the IGBT or the free-wheeling diode, respectively. According to (1) and (2), it can be concluded that the steady-state mean value (t → ∞) of the junction temperature depends on the thermal resistance Rthi; whil ...
motors and generators
motors and generators

... For some types of loads, fuses do not provide satisfactory overload protection f or the equipment. An example of this is motors. A 1/4 horsepower motor which has a full load running current of about 5 amperes may require as much as 20 amperes starting current. A fuse rating of a t least 15 amperes i ...
2 single phase transformers - Arrdekta Institute of Technology
2 single phase transformers - Arrdekta Institute of Technology

... 1. System voltages are more stable in relation to unbalanced load 2. If one t/f is failed it may be used for low power level i.e. V-V connection 3. No distortion of flux i.e. 3rd harmonic current not flowing to the line wire ...
ELECTRICITY
ELECTRICITY

AN708 Low-Power Universal-Input Power Supply Achieves High
AN708 Low-Power Universal-Input Power Supply Achieves High

Stresa, Italy, 26-28 April 2006  VIBRATIONAL ENERGY SCAVENGING WITH SI TECHNOLOGY
Stresa, Italy, 26-28 April 2006 VIBRATIONAL ENERGY SCAVENGING WITH SI TECHNOLOGY

... amplitudes between 1 and 10 m/s2. In this case, a maximum power of PLopt = 282 μW is obtained with RL = RLopt = 600 Ω, with an amplitude of the output voltage of Vo = 0.58 V. Increasing the load resistance up to RL = 1350 Ω allows the generation of PL = 240 μW with a voltage amplitude Vo= 0.8 V. It ...
Preliminary Datasheet
Preliminary Datasheet

... is pulled constantly high. However, CTRL pin allows a PWM signal to reduce this regulation voltage by changing the PWM duty cycle to achieve LED brightness dimming control. Detail circuit, as show in Figure 14. The relationship between the duty cycle and LED current can be expressed as below: ...
unit 2 dc machines
unit 2 dc machines

... the demagnetizing effect of armature reaction, the on-load generated emf is less than the no-load voltage. The curve AC represents the on-load generated emf Eg vs. load current IL i.e. internal characteristic (as Ia = IL for a separately excited dc generator). Also, the terminal voltage is lesser du ...
L6376
L6376

... considered to be 24 V. In this range the device operates correctly. Below 9.5 V the overall system has to be considered not reliable. Consequently the supply voltage is monitored continuously and a signal, called UV, is internally generated and used. The signal is “on” as long as the supply voltage ...
hsl300 spiral mixer hsl300 spiral mixer
hsl300 spiral mixer hsl300 spiral mixer

... 208/60/3, 34 amps. ETL Listed for Safety and Sanitation. Call for additional voltages. CONTROLS: Operator and main control boxes are dustproof. ­Magnetic contactors with automatic resetting thermal overload protection for each motor. “Start-Stop” push buttons. Reduced voltage fused pilot circuit. Di ...
AS1360
AS1360

... the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current info ...
Electrical Systems and Construction Student`s Book
Electrical Systems and Construction Student`s Book

< 1 ... 736 737 738 739 740 741 742 743 744 ... 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