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Application Note Designing VME Power Systems from Standard
Application Note Designing VME Power Systems from Standard

... A basic input voltage conditioning circuit is shown in Figure 2. This is a two-stage circuit that can accommodate input transients which extend both above and below the operating range of the DC-DC converter, such as in MILSTD-1275. The first stage is the transient protection function which activate ...
Piezoelectric Sound Components
Piezoelectric Sound Components

... The piezo elements may be driven with sinusoidal, pulsed, or square waves. A sine wave will cause the device to operate at a frequency lower than the resonant frequency with a lower SPL. This is due to the loss of energy through the lag time between peak deflections. A square wave will produce highe ...
INA1x8 High-Side Measurement Current Shunt
INA1x8 High-Side Measurement Current Shunt

... current shunt monitors. Wide input common-mode voltage range, low quiescent current, and tiny SOT23 packaging enable use in a variety of applications. ...
AR01415591564
AR01415591564

... significantly higher than CCT without control. It was also observed that STATCOM can provide higher stability limit Fig:9 Swing curves of New England System with control than that of a SVC of similar rating. In the 10-machine 39Fig:8 shows the swing curves of all the machines of the bus system, the ...
GMW360A Sin/Cos to Analog Interpolator IC
GMW360A Sin/Cos to Analog Interpolator IC

... to the angle with 9 bit resolution. In addition to the absolute angle position outputs, the GMW360A detects when the magnetic strength of the magnet is too low and provides a discrete magnet “Out of Range” signal. The device incorporates an input voltage “Offset Null” capability which is activated b ...
TI First
TI First

Frequency Generator
Frequency Generator

Effects of Varying Load on DC- Link Voltage in DFIG
Effects of Varying Load on DC- Link Voltage in DFIG

... rotor circuit & increase the speed range of the generator (extended generator speed range ±30%), also improved the overall power conversion efficiency. The DFIG typically operates about 30% above & below synchronous speed, sufficient for most wind speed conditions. It also enables generator side act ...
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Rockman Rockmodules

Comparing Topologies and the (Design) Rules
Comparing Topologies and the (Design) Rules

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HS3414301435

... transmission line via a shunt transformer and other one is connected in series through a series transformer. The DC terminal of two VSCs is coupled and this creates a path for active power exchange between the converters. VSC provide the main function of UPFC by injecting a voltage with controllable ...
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Una propuesta de control por modo deslizante para convertidores

... From Eq. (10) it is evident that l0 is related with ωn and λ1 with ξ. As usual, the controlled system must respond faster than the open-loop system and therefore, it is desirable that λ0 > ω n. According to Eqs. (13), (18) and (22), the percent overshoot only depends on λ1, which provides a straight ...
ZXCL SERIES Micropower SC70-5 & SOT23-5 low dropout regulators
ZXCL SERIES Micropower SC70-5 & SOT23-5 low dropout regulators

... Enable control A TTL compatible input is provided to allow the regulator to be shut down. A low voltage on the Enable pin puts the device into shutdown mode. In this mode the regulator circuit is switched off and the quiescent current reduces to virtually zero (typically less than 10nA) for input vo ...
Manual - Quartzlock
Manual - Quartzlock

... The loop aerial supplied with all units has been found to be the best type available for this application, achieving excellent temperature performances with no significant phase effects. (In comparison, ferrite rod aerials are very temperature sensitive and will contribute significantly to the phase ...
ADVFC32
ADVFC32

... application of Figure 2, a 10 ppm/°C input resistor used with a 100 ppm/°C capacitor may result in a maximum overall circuit gain drift of: 100 ppm/°C (ADVFC32BH) + 100 ppm/°C (C1) + 10 ppm/°C (RIN) = 210 ppm/°C Although RIN and C1 have the most pronounced effect on temperature stability, the offset ...
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Problem Set #5: Due Date -

... We can achieve even another 2x reduction in current consumption using a voltage mode output driver. The voltage-mode driver also uses bipolar signaling (pushing and pulling current). However, the other benefit is that the transistors are operating in the triode region, and hence, can effectively act ...
AN1308: A Unique Coax Cable Driver Circuit with Common
AN1308: A Unique Coax Cable Driver Circuit with Common

... resistor of 75Ω, the CMV error will be about 16mV per volt of CMV. The load termination will divide this error in two so the CMV error at the load is approximately 8mV per one volt of CMV. The maximum CMV that can be rejected is 2.4VPEAK with ±5V amps for AC-coupled video and 2VPEAK for DC-coupled v ...
Modelling of Unified Power Flow Controller into Power
Modelling of Unified Power Flow Controller into Power

... phase angle). Such "new" FACTS device combines together the features of two "old" FACTS devices: the Static Synchronous Compensator (STATCOM) and the Static Synchronous Series Compensator (SSSC) [3-6]. In practice, these two devices are two Voltage Source Inverters (VSI’s) connected respectively in ...
The basic function of switchgear is to control supply of electric power
The basic function of switchgear is to control supply of electric power

120A/150A ESC (PDF file)
120A/150A ESC (PDF file)

... Upgrade Firmware: Use of this button will begin the firmware upgrade process. A pop-up will be displayed, and you need to select the location of the firmware update file. You may cancel this process here without any effect to the ESC firmware. After finding and selecting the file, the confirmation s ...
ANLPS300: How to Power GSM/GPRS/EDGE/3G/HSPA M2M Modems General Description
ANLPS300: How to Power GSM/GPRS/EDGE/3G/HSPA M2M Modems General Description

... ANLPS300 Application Note In order to ensure power supply transient response does not degrade the modem’s performance, output voltage transient response must be very fast and as stable as possible. If the power supply is too slow, the output voltage might drop too much and result in a time mask viol ...
Aalborg Universitet Multilevel Modular Converter for VSC-HVDC Transmission Applications: Control and
Aalborg Universitet Multilevel Modular Converter for VSC-HVDC Transmission Applications: Control and

... change of capacitor voltage in a conduction interval is negligible. As the number of sub-modules is increased, the steps become smaller, and the waveform becomes closer to that of the reference sine wave. Standard IEEE 519 recommends two indices for voltage distortion [12]. The individual harmonic d ...
NJW44H11 - 80 V NPN, 10 A Power Transistor
NJW44H11 - 80 V NPN, 10 A Power Transistor

... ON Semiconductor and 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 www.onsemi.com/ ...
Evaluates:  MAX1790 MAX1790 Evaluation Kit General Description Features
Evaluates: MAX1790 MAX1790 Evaluation Kit General Description Features

DS4560 12V Hot-Plug Switch General Description Features
DS4560 12V Hot-Plug Switch General Description Features

... 12V Hot-Plug Switch The DS4560 is a self-contained hot-plug switch intended to be used on +12V power buses to limit through current and to control the power-up output-voltage ramp. The device contains an on-board 25mΩ n-channel power MOSFET that is actively closed-loop controlled to ensure that an a ...
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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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