Surge Current Protection Using Super Conductors Report New
... decades. Its ac losses have been reduced by the development of multi filament wire. The diameter of the filament is on the order of 0.1µm and they are decoupled by a highly resistive, normal conducting matrix, which also serves as thermal stabilization. Since any magnetic field interacts only with t ...
... decades. Its ac losses have been reduced by the development of multi filament wire. The diameter of the filament is on the order of 0.1µm and they are decoupled by a highly resistive, normal conducting matrix, which also serves as thermal stabilization. Since any magnetic field interacts only with t ...
SR integrated charger - Aston Publications Explorer
... formed by the phase windings and switches, providing high efficiency and power density. By controlling the switches S0-S3, either a Buck-Boost or a Buck DC-DC converter can be configured to match the different voltage levels of the power source and batteries. 1) Buck-boost type charging When the inp ...
... formed by the phase windings and switches, providing high efficiency and power density. By controlling the switches S0-S3, either a Buck-Boost or a Buck DC-DC converter can be configured to match the different voltage levels of the power source and batteries. 1) Buck-boost type charging When the inp ...
Auxiliary coil and exciter equipped with permanent magnets
... strengthening the magnetic flux produced there. 2. OPERATION PRINCIPLE AND CHARACTERISTICS In order to keep the voltage constant at the terminals, WEG alternators are equipped with a voltage regulator, which controls the generator excitation according to the result of the comparison between the meas ...
... strengthening the magnetic flux produced there. 2. OPERATION PRINCIPLE AND CHARACTERISTICS In order to keep the voltage constant at the terminals, WEG alternators are equipped with a voltage regulator, which controls the generator excitation according to the result of the comparison between the meas ...
Motor Vehicle Level 3
... •As the tooth moves away from the iron core, the magnetic field expands producing a negative voltage •As the wheel rotates faster the voltage and frequency increase (indicating to the ECU that the vehicle is travelling faster) ...
... •As the tooth moves away from the iron core, the magnetic field expands producing a negative voltage •As the wheel rotates faster the voltage and frequency increase (indicating to the ECU that the vehicle is travelling faster) ...
Motor Circuit Protection Components
... device] so that several of them may be able to be protected by one larger upstream fuse sized not to exceed the maximum size allowed per the device listing. Devices listed for use in group motor installations will be marked for such use to indicate that the device has undergone the appropriate testi ...
... device] so that several of them may be able to be protected by one larger upstream fuse sized not to exceed the maximum size allowed per the device listing. Devices listed for use in group motor installations will be marked for such use to indicate that the device has undergone the appropriate testi ...
SERIES AND PARALLEL CONNECTED DIODES Series Configuration
... Consider two diodes connected in parallel configuration. Current would be shared among the two diodes. To make this sharing equal, inductors (with same inductances) are connected. When current at D1 increases, the voltage drop across L1 increases, generating an opposite polarity value at L2. Inducto ...
... Consider two diodes connected in parallel configuration. Current would be shared among the two diodes. To make this sharing equal, inductors (with same inductances) are connected. When current at D1 increases, the voltage drop across L1 increases, generating an opposite polarity value at L2. Inducto ...
Detection and estimation of demagnetization faults in Permanent Magnet Synchronous Motors
... is an effect of this demagnetization procedure, is also used as an indicator of how much the demagnetization has progressed. 4 The procedure is repeated from Step 1. The whole experiment has been repeated 14 times to assess the robustness of the procedure. At the end of each individual demagnetizati ...
... is an effect of this demagnetization procedure, is also used as an indicator of how much the demagnetization has progressed. 4 The procedure is repeated from Step 1. The whole experiment has been repeated 14 times to assess the robustness of the procedure. At the end of each individual demagnetizati ...
University of Pune FACULTY OF ENGINEERING T.E. Electrical
... Three phase Synchronous machines: Construction, rotating-field type and rotating-armature type, salient-pole type and non-salient-pole type and their comparison. Damper winding Three phase Synchronous generator (cylindrical rotor type): Principle of operation. Emf equation and winding factors, ratin ...
... Three phase Synchronous machines: Construction, rotating-field type and rotating-armature type, salient-pole type and non-salient-pole type and their comparison. Damper winding Three phase Synchronous generator (cylindrical rotor type): Principle of operation. Emf equation and winding factors, ratin ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Abstract: A fault-tolerant permanent-magnet traction module is proposed for subway application, which has three different operation modes: normal, isolation, and fault-tolerant mode. In normal mode, 2 three-phase permanent-magnet synchronous machines (PMSMs) are controlled by 2 three-leg voltage-sou ...
... Abstract: A fault-tolerant permanent-magnet traction module is proposed for subway application, which has three different operation modes: normal, isolation, and fault-tolerant mode. In normal mode, 2 three-phase permanent-magnet synchronous machines (PMSMs) are controlled by 2 three-leg voltage-sou ...
3-phase motor control demonstration board featuring IGBT
... surfaces. There is a danger of serious personal injury if the kit or components are improperly used or incorrectly installed. The kit is not electrically isolated from the AC/DC input. The demonstration board is directly linked to the mains voltage. No insulation is ensured between accessible parts ...
... surfaces. There is a danger of serious personal injury if the kit or components are improperly used or incorrectly installed. The kit is not electrically isolated from the AC/DC input. The demonstration board is directly linked to the mains voltage. No insulation is ensured between accessible parts ...
Bus Edison High Speed Fuse Application
... In general for these applications fuses are only exposed to AC fault conditions and the fuse voltage rating is selected to be equal or greater than the supply line-to-line voltage. In the case of the three phase double Wye (star) arrangement with interphase transformer, the voltage rating of the fus ...
... In general for these applications fuses are only exposed to AC fault conditions and the fuse voltage rating is selected to be equal or greater than the supply line-to-line voltage. In the case of the three phase double Wye (star) arrangement with interphase transformer, the voltage rating of the fus ...
Fundamental Electricity Student Study Notes
... LAB: Sketch and describe how to locate a dead short circuit. In a circuit with a dead short the circuit breaker or fuse will be open. If you reset the circuit breaker or replace the fuse it will blow open as soon as the circuit is reenergized. This occurs because total resistance for the circuit is ...
... LAB: Sketch and describe how to locate a dead short circuit. In a circuit with a dead short the circuit breaker or fuse will be open. If you reset the circuit breaker or replace the fuse it will blow open as soon as the circuit is reenergized. This occurs because total resistance for the circuit is ...
Design and Performance of a High Temperature Superconducting
... N IMPORTANT quality index of electric machine is the power density: it is known that axial flux machines tend to have a higher power density than the radial machines. As a result, they are used more and more in applications where the power density is a critical issue: renewable energy production[1], ...
... N IMPORTANT quality index of electric machine is the power density: it is known that axial flux machines tend to have a higher power density than the radial machines. As a result, they are used more and more in applications where the power density is a critical issue: renewable energy production[1], ...
Three-Phase Induction Motor Operating from Single
... From Eq. (13) when the switch is closed (D = 1.0), Ceffective is equal to Creal . On other hand, when the shorting interval of the switch is decreased, Ceffective will become small until it equals zero at D = 0 and it is easy to adjust the value of the effective capacitor by changing the shorting in ...
... From Eq. (13) when the switch is closed (D = 1.0), Ceffective is equal to Creal . On other hand, when the shorting interval of the switch is decreased, Ceffective will become small until it equals zero at D = 0 and it is easy to adjust the value of the effective capacitor by changing the shorting in ...
excitation systems
... overheating due to prolonged field overcurrent Fig. 8.18 shows thermal overload capability of the field winding OXL detects the high field current condition and, after a time delay, acts through the ac regulator to ramp down the excitation to about 110% of rated field current; if unsuccessful, t ...
... overheating due to prolonged field overcurrent Fig. 8.18 shows thermal overload capability of the field winding OXL detects the high field current condition and, after a time delay, acts through the ac regulator to ramp down the excitation to about 110% of rated field current; if unsuccessful, t ...
Brushed DC electric motor
A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy,and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications