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CSI Specification - Grundfos Express Suite
CSI Specification - Grundfos Express Suite

... B. The VFD shall include a full-wave diode bridge rectifier and maintain a displacement power factor of near unity regardless of speed and load. C. The VFD shall produce an output waveform capable of handling maximum motor cable distances of up to 1,000 ft. (unshielded) without tripping or derating ...
Paper Link - UIC - University of Illinois at Chicago
Paper Link - UIC - University of Illinois at Chicago

... Fig. 1(a)–(c) shows three mechanisms for achieving galvanic isolation between the fuel-cell stack and the application load. The conventional scheme, shown in Fig. 1(a), achieves isolation by placing a 50-Hz/60-Hz line-frequency transformer at the output of the inverter. Such a transformer is bulky b ...
AR3 - Mouser Electronics
AR3 - Mouser Electronics

... Analog Rockers were developed to provide the reliability required in demanding environmental conditions such as multifunction grips, dashboards or armrest controls for heavy duty industrial applications. The unique sensing design makes the rocker module an ideal proportional function solution for ‘o ...
Programming and Controls Workshop
Programming and Controls Workshop

Datasheet - Distech Controls
Datasheet - Distech Controls

... and accuracy. They are also fitted with a temperature output or RH & temperature output. A directly connected passive resistive temperature output is also available, as an alternative to the standard active temperature output. The sensor can be used to ensure adequate ventilation while maximizing en ...
Analysis of the Effect of Harmonics Due To Switching Devices WRT
Analysis of the Effect of Harmonics Due To Switching Devices WRT

PDF version
PDF version

Implementation of Lamp Dimmer And Fan Controller System: A
Implementation of Lamp Dimmer And Fan Controller System: A

... channels and analog inputs on every general-purpose input/output (GPIO) pin. It is also a high-performance configurable digital system with some part numbers including interfaces such as USB, and multi master interintegrated circuit (I2C). In addition to communication interfaces, it has an easy to c ...
1.2 kV Class Energy Efficient Distribution Transformer Typical
1.2 kV Class Energy Efficient Distribution Transformer Typical

... Product Data including kVA rating, average winding temperature rise, detailed enclosure dimensions, primary & secondary nominal voltages, primary voltage taps, no load & full load losses, impedances, unit weight, warranty. ...
Sound Systems, Computer Memory, Seismograph, GFCI Inductance
Sound Systems, Computer Memory, Seismograph, GFCI Inductance

US_Renersolar2200~5000_English_User`s
US_Renersolar2200~5000_English_User`s

Designing a High-Voltage IGBT Structure with TCAD
Designing a High-Voltage IGBT Structure with TCAD

... device that combines the high-power characteristics of bipolar transistors with the fast-switching and voltagedrive characteristics of MOSFETs. It is used in a wide variety of applications, ranging from electric vehicles, industrial applications such as general-purpose inverters and switching power ...
Temperature Compensation for LCD displays
Temperature Compensation for LCD displays

... +50°C. Most Hantronix LCD modules are available with an extended temperature range option which allows the display to operate from -20°C to +70°C. The changes in contrast are NOT usually tolerable over this wide a range of temperatures, which means a way of adjusting the contrast voltage as the ambi ...
Ohmic devices - marineabudhabi
Ohmic devices - marineabudhabi

... The instrument to measure the electrical resistance of a conductor is called an ohmmeter. The ohmmeter is connected directly between the terminals of the conductor to measure the value of its resistance. 3rd CALL: Call for the teacher before using the ohmmeter. E8. With the ohmmeter, measure the res ...
Products - Naturesound.us
Products - Naturesound.us

... Voice Coil ...
S0310
S0310

... All speakers shall be either 25 or 70 VRMS inputs with field selectable power taps. Strobes shall use filtered power or unfiltered power supply (full-wave-rectified). All models shall have provisions for standard reverse polarity type supervision and IN/OUT field wiring using terminals that accept # ...
35 W wide-range high power factor flyback converter evaluation
35 W wide-range high power factor flyback converter evaluation

... connected after the mains rectifier and the capacitor filter, which in this case is quite small to avoid damage to the shape of the input current. The flyback switch is represented by the power MOSFET Q1, and driven by the L6562A. At startup, the L6562A is powered by the VCC capacitor (C6), which is ...
dl 2617 six pulse control unit
dl 2617 six pulse control unit

Evaluation Board User Guide UG-218
Evaluation Board User Guide UG-218

... temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for an ...
S225-60-2
S225-60-2

... reading exists, then there is a problem with the windings or their connection. Readings will be the same with or without the equalizer winding. Note: On a type B regulator, the difference between the taps will be slightly less than calculated as the regulator is tapped toward 16 lower. This is nor ...
Transformer Notes
Transformer Notes

Aalborg Universitet Team-oriented Adaptive Droop Control for Autonomous AC Microgrids
Aalborg Universitet Team-oriented Adaptive Droop Control for Autonomous AC Microgrids

... where E i is the voltage amplitude at Node i and E j is the estimate of the average voltage amplitude provided by the estimator at Node j . As seen in (3), the updating protocol uses the local voltage, E i , while no other neighbors measurement is directly fed into the estimation process. Indeed, an ...
RBC-12/17-D48 Series
RBC-12/17-D48 Series

AT-635 Voltage Variable Absorptive Attenuator 35 dB, DC - 2.0 GHz
AT-635 Voltage Variable Absorptive Attenuator 35 dB, DC - 2.0 GHz

... Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions I ...
Aalborg Universitet Wind Power Plant
Aalborg Universitet Wind Power Plant

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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.
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