UM0674
... The input section is provided with two connectors: CON1 for 400 Vac input voltage, and CON2 for 230 Vac input voltage. The output voltages are available on CON3 and CON4, with a shared ground between the two outputs, as shown in Figure 3. The converter is controlled by the UC3844B, a primary control ...
... The input section is provided with two connectors: CON1 for 400 Vac input voltage, and CON2 for 230 Vac input voltage. The output voltages are available on CON3 and CON4, with a shared ground between the two outputs, as shown in Figure 3. The converter is controlled by the UC3844B, a primary control ...
Superconducting Fault Current Limiter for Energy Storage Protection
... Superconducting Fault Current Limiter (SFCL) is innovative electric equipment which has the capability to reduce the fault current level within the first cycle of fault current. The first-cycle suppression of fault current by a SFCL results in an increased transient stability of the power system car ...
... Superconducting Fault Current Limiter (SFCL) is innovative electric equipment which has the capability to reduce the fault current level within the first cycle of fault current. The first-cycle suppression of fault current by a SFCL results in an increased transient stability of the power system car ...
Y. Han, A. Li, G. Cheung, C.R. Sullivan, and D.J. Perreault, “Evaluation of Magnetic Materials for Very High Frequency Power Applications,” 2008 IEEE Power Electronics Specialists Conference , June 2008, pp. 4270 – 4276
... equation shows that the ratio of Vout−pk and Vin−pk is approximately equal to the quality factor of the inductor at the resonant frequency. Probing the two voltages enables direct determination of inductor QL . Drive level can be adjusted by varying the amplitude of the rf source. The current of the ...
... equation shows that the ratio of Vout−pk and Vin−pk is approximately equal to the quality factor of the inductor at the resonant frequency. Probing the two voltages enables direct determination of inductor QL . Drive level can be adjusted by varying the amplitude of the rf source. The current of the ...
Price Discovery in Dynamic Power Markets with Low-Voltage Distribution-Network Participants Elli Ntakou
... If the substation generator has a higher fuel cost than the substation real energy price, then it will be providing reserves, and thus the opportunity cost for reactive power production will be associated with the clearing price for reserves at the substation. Otherwise, if the substation generator ...
... If the substation generator has a higher fuel cost than the substation real energy price, then it will be providing reserves, and thus the opportunity cost for reactive power production will be associated with the clearing price for reserves at the substation. Otherwise, if the substation generator ...
magnetically coupled circuit
... When two loops with or without contacts between them affect each other through the magnetic field generated by one of them, it called magnetically coupled. Example: transformer An electrical device designed on the basis of the concept of magnetic coupling. Used magnetically coupled coils to tr ...
... When two loops with or without contacts between them affect each other through the magnetic field generated by one of them, it called magnetically coupled. Example: transformer An electrical device designed on the basis of the concept of magnetic coupling. Used magnetically coupled coils to tr ...
PDF
... amps of full-load transformer current, up to 34.5 kV grounded wye, or 23 kV delta). The high-voltage overcurrent protection scheme provided with the transformer shall be an externally removable loadbreak expulsion Bay-O-Net fuse assembly with a flapper valve to minimize oil spillage. The bayonet fus ...
... amps of full-load transformer current, up to 34.5 kV grounded wye, or 23 kV delta). The high-voltage overcurrent protection scheme provided with the transformer shall be an externally removable loadbreak expulsion Bay-O-Net fuse assembly with a flapper valve to minimize oil spillage. The bayonet fus ...
direct torque control of induction motors
... ⇒ Fundamental concept of DTC ⇒ Rotor flux reference ⇒ Voltage vector selection criteria ⇒ Amplitude of flux and torque hysteresis band ⇒ Direct self control (DSC) ⇒ SVM applied to DTC ⇒ Flux estimation at low speed ⇒ Sensitivity to parameter variations and current sensor offsets ⇒ Conclusions ...
... ⇒ Fundamental concept of DTC ⇒ Rotor flux reference ⇒ Voltage vector selection criteria ⇒ Amplitude of flux and torque hysteresis band ⇒ Direct self control (DSC) ⇒ SVM applied to DTC ⇒ Flux estimation at low speed ⇒ Sensitivity to parameter variations and current sensor offsets ⇒ Conclusions ...
Power Electronics Solution to Dust Emissions from
... supply (HF HV). Electrical engineering faculty of the University of Belgrade (ETF) has developed technology and HF HV equipment for the ESP power supply. This solution was subjected to extensive experimental investigation at TE Morava from 2008 to 2010. High frequency power supply is proven to reduc ...
... supply (HF HV). Electrical engineering faculty of the University of Belgrade (ETF) has developed technology and HF HV equipment for the ESP power supply. This solution was subjected to extensive experimental investigation at TE Morava from 2008 to 2010. High frequency power supply is proven to reduc ...
transformer installation manual
... These recommendations apply to modern, large, liquid-filled power transformers with high-voltage windings rated 69 kV and above. However, appropriate passages may be applied to lower-voltage transformers when similar conditions and similar transformer construction exist. 1. Increased applications of ...
... These recommendations apply to modern, large, liquid-filled power transformers with high-voltage windings rated 69 kV and above. However, appropriate passages may be applied to lower-voltage transformers when similar conditions and similar transformer construction exist. 1. Increased applications of ...
Project P917 - EURESCOM Home Page
... solutions have been proposed to power the access network equipment with DC powering over the existing telecom cables and /or local AC powering with battery backup. The drawback of these solutions is that they can either supply low power for an extended period of time (remote feeding through existing ...
... solutions have been proposed to power the access network equipment with DC powering over the existing telecom cables and /or local AC powering with battery backup. The drawback of these solutions is that they can either supply low power for an extended period of time (remote feeding through existing ...
Lab Manual of Basic Electrical Engineering
... 1. When a transformer is energised what types of losses occur in the magnetic frame of the transformer? 2. What information can be obtained from open circuit test of a transformer? 3. Why in open circuit test HV side is always kept open? 4. What is the power factor of a transformer under no load tes ...
... 1. When a transformer is energised what types of losses occur in the magnetic frame of the transformer? 2. What information can be obtained from open circuit test of a transformer? 3. Why in open circuit test HV side is always kept open? 4. What is the power factor of a transformer under no load tes ...
Evaluates: MAX5069A MAX5069A Evaluation Kit General Description Features
... The MAX5069A EV kit is a 120W, isolated, push-pull DC-DC converter that provides +12V at up to 10A output. The circuit can be powered from a 36V to 72V DC source. The user should supply an additional 330µF bulk storage capacitor between the input terminals (+VIN, -VIN). This capacitor should be rate ...
... The MAX5069A EV kit is a 120W, isolated, push-pull DC-DC converter that provides +12V at up to 10A output. The circuit can be powered from a 36V to 72V DC source. The user should supply an additional 330µF bulk storage capacitor between the input terminals (+VIN, -VIN). This capacitor should be rate ...
BM1Q0XX series Quasi-Resonant converter Technical Design
... In the case of Quasi-Resonant converters, switching-loss basically does not occur during turn-on, but occurs predominantly during turn-off. To reduce switching-loss when turned off, turn-off speed can be increased by reducing R7 value, but sharp changes in current will occur, which increases the swi ...
... In the case of Quasi-Resonant converters, switching-loss basically does not occur during turn-on, but occurs predominantly during turn-off. To reduce switching-loss when turned off, turn-off speed can be increased by reducing R7 value, but sharp changes in current will occur, which increases the swi ...
Transformer
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltages of alternating current in electric power applications.A varying current in the transformer's primary winding creates a varying magnetic flux in the transformer core and a varying magnetic field impinging on the transformer's secondary winding. This varying magnetic field at the secondary winding induces a varying electromotive force (EMF) or voltage in the secondary winding. Making use of Faraday's Law in conjunction with high magnetic permeability core properties, transformers can thus be designed to efficiently change AC voltages from one voltage level to another within power networks.Since the invention of the first constant potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electrical energy. A wide range of transformer designs are encountered in electronic and electric power applications. Transformers range in size from RF transformers less than a cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.