• 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
STI13005-H
STI13005-H

... All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and service ...
Multilevel Operation and Input Power Balancing for a Dual Two
Multilevel Operation and Input Power Balancing for a Dual Two

... open-end winding machine is analyzed in this paper. The scheme is based on the use of two insulated dc supplies, each one feeding a standard two-level three-phase inverter. The three-phase six-wire winding is connected across the output terminals of the two inverters. A new modulation technique that ...
College of Micronesia-FSM
College of Micronesia-FSM

Ultracapacitor Based Ride Through System for Anand Vivek Ravi Vinod John
Ultracapacitor Based Ride Through System for Anand Vivek Ravi Vinod John

Power Factor Improvement of a Three Phase Rectifier by Boost
Power Factor Improvement of a Three Phase Rectifier by Boost

PQ Circle Diagram Based Parameter Measurement for Permanent
PQ Circle Diagram Based Parameter Measurement for Permanent

... Especially, the iron loss resistance cannot be measure by the no-load test. This paper presents parameter measurement for PMSM based on the P-Q circle diagram [7]. The P-Q circle diagram can be depicted from the pairs of active power and reactive power when PMSM operates in various load conditions u ...
Evaluates: MAX5025–MAX5028 MAX5026 Evaluation Kit General Description Features
Evaluates: MAX5025–MAX5028 MAX5026 Evaluation Kit General Description Features

Electronic Troubleshooting
Electronic Troubleshooting

... • Sample circuit – Previous slide or page 147 • Only Output stage shown (missing biasing and driver circuits) • The P-type MOSFETs Q3 & Q4 have their sources tied to +75V • The N-type MOSFETs Q5 & Q6 have their sources tied to -75V • All the output transistor drains are connected to the Speaker circ ...
Chapter4 - Lab 3: POWER
Chapter4 - Lab 3: POWER

... In the last lab we were able to drive a small motor using a differential amplifier. We used a pot to vary the voltage of one input while keeping the other constant, and thus controlled the speed and direction of the motor. This is because, without a load, the speed of a DC motor is proportional to t ...
Not All Regulators Are Created Equal - Nanomodule or
Not All Regulators Are Created Equal - Nanomodule or

... – Usually requires an input and output capacitor • Some only require an input capacitor ...
Real Time Operations (Transmission)
Real Time Operations (Transmission)

LED- control gear (driver + dimmer) V
LED- control gear (driver + dimmer) V

... • Overload protection • Over temperature protection ...
UMG 604 UMG 604 – Power analyser
UMG 604 UMG 604 – Power analyser

... • Measurement, monitoring and checking of electrical characteristics in energy distribution systems • Consumption data acquisition • Monitoring of the power quality (harmonics, short-term interruptions, transients, starting currents, etc.) • Measured value transducer for building management systems ...
ABB string inverters UNO-2.0/2.5-I-OUTD 2 to 2.5 kW
ABB string inverters UNO-2.0/2.5-I-OUTD 2 to 2.5 kW

... UNO-2.0-I and UNO-2.5-I feature an efficiency of 96.3%. The wide input voltage range makes the inverter suitable to low power installations with reduced string size. In addition to its new look, this inverter has new features including a special built-in heat sink compartment and front panel display ...
Promotional Bulletin
Promotional Bulletin

... ■■ Communication loss fail-safe modes for grid stability ■■ Unsolicited reporting of state change, field alarms, or threshold violations for easy monitoring ■■ Available radio-ready ■■ Increased security with password protection ■■ Control configurations upgradable or downloadable through Cooper Pow ...
FIN1531 5V LVDS 4-Bit High Speed Differential Driver FI N1531 5V
FIN1531 5V LVDS 4-Bit High Speed Differential Driver FI N1531 5V

... 5V LVDS 4-Bit High Speed Differential Driver General Description This quad driver is designed for high speed interconnects utilizing Low Voltage Differential Signaling (LVDS) technology. The driver translates 5V TTL/CMOS signal levels to LVDS levels with a typical differential output swing of 350 mV ...
Application Note 42034 Synchronizing the ML4824 to Wide Frequency Ranges INTRODUCTION
Application Note 42034 Synchronizing the ML4824 to Wide Frequency Ranges INTRODUCTION

... from digital to audio the result may be a noticeable hum or buzz superimposed on the reconstructed audio signal. If, however, the controller frequency is phase locked to the system clock the noise occurs at the ‘edges’ of each measurement time, and is thus excluded from the conversion. Or the noise ...
김 해 천
김 해 천

Battery Voltage Boost Regulator
Battery Voltage Boost Regulator

Definition Crest Factor - AMETEK Programmable Power
Definition Crest Factor - AMETEK Programmable Power

... The crest factor for a sinusoidal current waveform, such as that which a pure resistive load would draw, is 1.414 since the peak of a true sinusoid is 1.414 times the rms value. However, the crest factor for a non-sinusoidal current waveform can differ dramatically for loads that are not power facto ...
PDF
PDF

... eliminate the leakage currentsthrough the parasitic capacitor between the PV array andthe ground [3-10]. In general, the leakage current can besignificantly mitigated from the viewpoint of system topologyor modulation schemes. For example, the single-phase H-bridgetopology with the bipolar modulatio ...
ECE1250F14_HWC2
ECE1250F14_HWC2

Playing with Radio Controlled Cars
Playing with Radio Controlled Cars

... event to occur. Such devices are useful wherever wireless remote control is needed. In particular, this type of controller is useful for special effects in theatrical settings. ...
Silicon Steroids for the Stamp Help Your Projects Heft Big Loads
Silicon Steroids for the Stamp Help Your Projects Heft Big Loads

IMX8
IMX8

... VEB=4V VCE=6V, IC=2mA VCE=12V, IE= −2mA, f=100MHz ...
< 1 ... 999 1000 1001 1002 1003 1004 1005 1006 1007 ... 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