15 - Auburn University
... the total power consumed by such designs. Multi-threshold CMOS (MTCMOS), now available from foundries, is one approach to managing leakage power. With MTCMOS, high ...
... the total power consumed by such designs. Multi-threshold CMOS (MTCMOS), now available from foundries, is one approach to managing leakage power. With MTCMOS, high ...
The Harsh Reality of Wide-Ranging 4V–36V Automotive Batteries Is
... When this pin is below the 0.75V reference, the regulator forces its feedback pin to the TRK/SS pin voltage rather than the reference voltage. The TRK/SS pin has a 3µ A pull-up current source. The soft-start function requires a capacitor from the TRK/SS pin to ground. At startup, this capacitor is a ...
... When this pin is below the 0.75V reference, the regulator forces its feedback pin to the TRK/SS pin voltage rather than the reference voltage. The TRK/SS pin has a 3µ A pull-up current source. The soft-start function requires a capacitor from the TRK/SS pin to ground. At startup, this capacitor is a ...
Subhashish Bhattacharya, NC State University a. High Power
... Broader Impact on the WBG Community HV IGD enables SiC based Medium Voltage converters which are more efficient compared to Si based MV converters Increases reliability of these high power density converters – by providing diagnostics and prognostics by the IGD ...
... Broader Impact on the WBG Community HV IGD enables SiC based Medium Voltage converters which are more efficient compared to Si based MV converters Increases reliability of these high power density converters – by providing diagnostics and prognostics by the IGD ...
motorintro - Cleveland State University
... can see that with S1 closed and S2 open, current will flow from right to left through the motor winding. With S1 open and S2 closed, current will flow from left to right. We can, therefore, change the direction of current flow using only two switches (instead of the four switches needed for the bipo ...
... can see that with S1 closed and S2 open, current will flow from right to left through the motor winding. With S1 open and S2 closed, current will flow from left to right. We can, therefore, change the direction of current flow using only two switches (instead of the four switches needed for the bipo ...
UG_Power Controller_GB
... vehicle power. When the car battery voltage reaches the cut off limit, this device will stop providing power for the NVR and related equipments in order to protect the car battery. Hence, the battery voltage is avoided to be too low to start the engine for insuring normal operation. ...
... vehicle power. When the car battery voltage reaches the cut off limit, this device will stop providing power for the NVR and related equipments in order to protect the car battery. Hence, the battery voltage is avoided to be too low to start the engine for insuring normal operation. ...
250 Watt ATX Replacement Computer PC Power Supply StarTech
... A reliable upgrade or replacement power supply for desktop PCs. This StarTech.com power supply offers an upgrade or replacement to a variety of Intel or AMD-based ATX desktop computer systems. Compliant with the industry standard ATX specification and using the standard ATX form-factor, this power s ...
... A reliable upgrade or replacement power supply for desktop PCs. This StarTech.com power supply offers an upgrade or replacement to a variety of Intel or AMD-based ATX desktop computer systems. Compliant with the industry standard ATX specification and using the standard ATX form-factor, this power s ...
Direct Current Motors - Alfred State College intranet site
... A DC motor can be stopped more rapidly by using the method called Plugging. It consists of suddenly reversing the armature currents by reversing the terminals of the source: • In practice R is chosen so that the initial braking current is about twice the rated motor current. Then the initial braking ...
... A DC motor can be stopped more rapidly by using the method called Plugging. It consists of suddenly reversing the armature currents by reversing the terminals of the source: • In practice R is chosen so that the initial braking current is about twice the rated motor current. Then the initial braking ...
DC25617623
... transmission line. The functionality of the STATCOM model is verified by regulating the reactive current flow through it this is useful to generate or absorb reactive power for regulating the line voltage of the bus where the STATCOM is connected. Similarly when the system voltage is higher than the ...
... transmission line. The functionality of the STATCOM model is verified by regulating the reactive current flow through it this is useful to generate or absorb reactive power for regulating the line voltage of the bus where the STATCOM is connected. Similarly when the system voltage is higher than the ...
Medical Solutions - Future Electronics
... portable and run from 1 or 2 cell Li-ion batteries. These are rechargeable devices. – The ISL9220A can be used in these applications to recharge at higher efficiency with up to 2A charge current. – The ISL9104 fully integrated 500mA Switching regulator can be used to generate a very compact switchin ...
... portable and run from 1 or 2 cell Li-ion batteries. These are rechargeable devices. – The ISL9220A can be used in these applications to recharge at higher efficiency with up to 2A charge current. – The ISL9104 fully integrated 500mA Switching regulator can be used to generate a very compact switchin ...
CHAPTER-3 DSTATCOM
... conventional structures without increasing the switching frequency. The additional flexibility of a level in the output voltage is used to assist in the output waveform construction. In this way, the harmonic performance of the inverter is improved, also obtaining better efficiency and reliability r ...
... conventional structures without increasing the switching frequency. The additional flexibility of a level in the output voltage is used to assist in the output waveform construction. In this way, the harmonic performance of the inverter is improved, also obtaining better efficiency and reliability r ...
Power System Harmonics
... Transformer Capacity When Supplying Nonsinusoidal Load Currents) states that a transformer subject to nonsinusoidal load current having more than 5% total harmonics distortion needs to be derated. However, when current THD is below 15%, the derating of the transformer would be so small that it can b ...
... Transformer Capacity When Supplying Nonsinusoidal Load Currents) states that a transformer subject to nonsinusoidal load current having more than 5% total harmonics distortion needs to be derated. However, when current THD is below 15%, the derating of the transformer would be so small that it can b ...
Grid connected renewable energy system using unified power
... The main purpose of a UPQC is to compensate for supply voltage power quality issues, such as, sags, swells, unbalance, flicker, harmonics, and for load current power quality problems, such as, harmonics, unbalance, reactive current, and neutral current. The key components of this system are as follo ...
... The main purpose of a UPQC is to compensate for supply voltage power quality issues, such as, sags, swells, unbalance, flicker, harmonics, and for load current power quality problems, such as, harmonics, unbalance, reactive current, and neutral current. The key components of this system are as follo ...
Presentation - Regional Technical Forum
... Implementation Prerequisites •Deploying VO without ensuring the targeted substation or feeders are robust creates low-voltage risks to a utility. To ensure a successful deployment of VO, pre-requisites that indicate a healthy system must be considered. Prerequisites may require a need for one or mor ...
... Implementation Prerequisites •Deploying VO without ensuring the targeted substation or feeders are robust creates low-voltage risks to a utility. To ensure a successful deployment of VO, pre-requisites that indicate a healthy system must be considered. Prerequisites may require a need for one or mor ...
136. multilevel inverters for high power applications with improved
... These topologies are known as multi-level converters. Now multi-level converters are being used with higher and higher levels like – 3-levels, 4-levels etc. up to even 13-level have been reached. They are able to handle about 30 MW with high voltage output and cheaper semiconductor devices. The most ...
... These topologies are known as multi-level converters. Now multi-level converters are being used with higher and higher levels like – 3-levels, 4-levels etc. up to even 13-level have been reached. They are able to handle about 30 MW with high voltage output and cheaper semiconductor devices. The most ...
ECE632_Final
... output voltage at a time. We developed a switching system controlled by a non-overlapping clock and the outputs of the decoder that allowed for reusing the capacitors. For the 750mV output we decided to use a linear regulator with the current mirror topology. Ramadass et al derived a maximum efficie ...
... output voltage at a time. We developed a switching system controlled by a non-overlapping clock and the outputs of the decoder that allowed for reusing the capacitors. For the 750mV output we decided to use a linear regulator with the current mirror topology. Ramadass et al derived a maximum efficie ...
. .OR How To Protect your 3-Phase Equipment Investment
... All Time Mark 3-phase monitors are adjustable through a wide range to allow for actual voltage or unbalance conditions. Adjustment of the monitor can be made by several methods. The simplest of these, and the one most commonly used, is to adjust the unit after it is installed, but not yet connected ...
... All Time Mark 3-phase monitors are adjustable through a wide range to allow for actual voltage or unbalance conditions. Adjustment of the monitor can be made by several methods. The simplest of these, and the one most commonly used, is to adjust the unit after it is installed, but not yet connected ...
... modulation ratio change from 0.4 to 0.9 by varying amplitude of modulating signal. The outputs voltage and current %THD waveforms for variable AC voltages and modulation index are observed on scope, and also see the THD.SPWM techniques are characterized by constant amplitude pulses with different du ...
GY3512171221
... main building block for flexible ac transmission systems (FACTS) devices and, as of today HVDC technology up to several hundred megawatts. Although relatively low switching frequency operation of high-power converters (9–15 times the line frequency) is desirable, it makes them sensitive to power net ...
... main building block for flexible ac transmission systems (FACTS) devices and, as of today HVDC technology up to several hundred megawatts. Although relatively low switching frequency operation of high-power converters (9–15 times the line frequency) is desirable, it makes them sensitive to power net ...
Development of a Picosecond-resolution TDC for
... the digitization would be done with a 5 GHz 10-bit counter, resulting in a least count of 1 ps. The second design we have simulated is a time-to-amplitude converter (TAC) with a sensitivity of 1mV/ps. The maximum input time interval of 1ns will convert to a 1.0V voltage that is held in a capacitor. ...
... the digitization would be done with a 5 GHz 10-bit counter, resulting in a least count of 1 ps. The second design we have simulated is a time-to-amplitude converter (TAC) with a sensitivity of 1mV/ps. The maximum input time interval of 1ns will convert to a 1.0V voltage that is held in a capacitor. ...
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.