Motors and Generators
... The direction (polarity) of the induced voltages depends on the direction of movement of the coil. The induced voltages are additive, making slip ring X (see the previous figure) positive (+) and slip ring Y negative (-). The potential across resistor R causes a current to flow from Y to X through ...
... The direction (polarity) of the induced voltages depends on the direction of movement of the coil. The induced voltages are additive, making slip ring X (see the previous figure) positive (+) and slip ring Y negative (-). The potential across resistor R causes a current to flow from Y to X through ...
power wave ac/dc 1000
... 5.a. Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases. When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep fumes and gases away from the breathing zone. When welding with electrodes which require special ...
... 5.a. Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases. When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep fumes and gases away from the breathing zone. When welding with electrodes which require special ...
Circuit Breaker Selection
... maximum asymmetrical rms current which is approximately 1 1/2 times the maximum symmetrical rms interrupting capability of the circuit breaker. This close and latch capability is satisfactory for most applications (Table 3-1.1 and 3-1.2). However there are some applications in which the calculated r ...
... maximum asymmetrical rms current which is approximately 1 1/2 times the maximum symmetrical rms interrupting capability of the circuit breaker. This close and latch capability is satisfactory for most applications (Table 3-1.1 and 3-1.2). However there are some applications in which the calculated r ...
ECE 469 Power Electronics Lab Manual
... Power electronics is a broad area. Experts in the field find a need for knowledge in advanced circuit theory, electric power equipment, electromagnetic design, radiation, semiconductor physics and processing, analog and digital circuit design, control systems, and a tremendous range of sub-areas. Ma ...
... Power electronics is a broad area. Experts in the field find a need for knowledge in advanced circuit theory, electric power equipment, electromagnetic design, radiation, semiconductor physics and processing, analog and digital circuit design, control systems, and a tremendous range of sub-areas. Ma ...
POWER INVERTER 5000W
... The power inverter has a lug on the rear panel. This is to connect the chassis of the power inverter to the ground. The ground terminals in the AC outlets on the front panel of the inverters are also connected to the ground lug. The chassis ground lug must be connected to the grounding point, which ...
... The power inverter has a lug on the rear panel. This is to connect the chassis of the power inverter to the ground. The ground terminals in the AC outlets on the front panel of the inverters are also connected to the ground lug. The chassis ground lug must be connected to the grounding point, which ...
PVD 3484 GB - SSD Parvex
... Until installed, the servoamplifier must be stored in a dry place safe from sudden temperature changes so condensation cannot form. ...
... Until installed, the servoamplifier must be stored in a dry place safe from sudden temperature changes so condensation cannot form. ...
Efficient Far-Field Radio Frequency Energy Harvesting for Passively
... to decrease. With a large number of stages, the resistive component from the rectifier is so low that it is dominated by other sources of parasitic resistance (i.e., drain and source connection resistors) and hence, the of the system is reduced due to a linear increase in parasitic capacitance. If t ...
... to decrease. With a large number of stages, the resistive component from the rectifier is so low that it is dominated by other sources of parasitic resistance (i.e., drain and source connection resistors) and hence, the of the system is reduced due to a linear increase in parasitic capacitance. If t ...
Title Design of a single ultra-low-loss magnetic ballast for a wide
... IEEE Transactions on Industrial Electronics. Copyright © IEEE; ©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, ...
... IEEE Transactions on Industrial Electronics. Copyright © IEEE; ©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, ...
Simplex Onsite Load Bank Catalog
... operator interface and a means of connection to the generator. To simulate magnetic or motor loads, an inductive load bank is added to the resistive load bank. This can take the form of an integrated, all-in-one package, or separate units. Likewise, a capacitive load bank can be added. Inductive and ...
... operator interface and a means of connection to the generator. To simulate magnetic or motor loads, an inductive load bank is added to the resistive load bank. This can take the form of an integrated, all-in-one package, or separate units. Likewise, a capacitive load bank can be added. Inductive and ...
capacitor switching transient modeling and analysis
... Figure 4.5: Harmonic Content Present in the Voltage Waveform .................................... 38 Figure 4.6: Transient Response of Phase A ...................................................................... 38 Figure 4.7: Transient Response of Phase A Current Waveform near Load............. ...
... Figure 4.5: Harmonic Content Present in the Voltage Waveform .................................... 38 Figure 4.6: Transient Response of Phase A ...................................................................... 38 Figure 4.7: Transient Response of Phase A Current Waveform near Load............. ...
Power Supply
... SPEAR 3 experienced MCOR30 bridge MOSFET failures during bulk power supply turn on It was determined that, with a fixed front panel controlled set-point, the bulk power supply output voltage was rising too quickly. The MCOR crate auxiliary power supply oscillated ...
... SPEAR 3 experienced MCOR30 bridge MOSFET failures during bulk power supply turn on It was determined that, with a fixed front panel controlled set-point, the bulk power supply output voltage was rising too quickly. The MCOR crate auxiliary power supply oscillated ...
APPLICATION NOTE U-134
... There are two modulation processes in an active power factor corrector. The first is the input diode bridge and the second is the multiplier, divider, squarer circuit. Each modulation process generates cross products, harmonics or sidebands between the two inputs. The description of these mathematic ...
... There are two modulation processes in an active power factor corrector. The first is the input diode bridge and the second is the multiplier, divider, squarer circuit. Each modulation process generates cross products, harmonics or sidebands between the two inputs. The description of these mathematic ...
Optimum DC-Link Solution in HVDC Wind Park Actively
... By controlling the reactive power at the connection point it is possible to regulate the voltage level, given that the reactive part of the source impedance is big enough. For grid connections with lower reactance of the source impedance, as is often the case in distribution cables, the voltage leve ...
... By controlling the reactive power at the connection point it is possible to regulate the voltage level, given that the reactive part of the source impedance is big enough. For grid connections with lower reactance of the source impedance, as is often the case in distribution cables, the voltage leve ...
Time Varying Harmonic Currents from Large Penetration Electronic
... The measurement results have been processed in analogy with laser printer. Figure 14 shows voltage and current waveshapes as recorded for stand-by and printing operation stages. Figure 15, Figure 16 and Figure 17 are reported for illustrating the harmonic currents magnitude spectrum variability for ...
... The measurement results have been processed in analogy with laser printer. Figure 14 shows voltage and current waveshapes as recorded for stand-by and printing operation stages. Figure 15, Figure 16 and Figure 17 are reported for illustrating the harmonic currents magnitude spectrum variability for ...
Get the Heatsink Off Your Back
... A second reason that the comparison is not so simple is that a converter's efficiency is a function of both its output power and its temperature. The efficiencies listed in Table 2 are for only one combination of power and temperature: full load and 25 oC. SynQor's converters are designed to hold th ...
... A second reason that the comparison is not so simple is that a converter's efficiency is a function of both its output power and its temperature. The efficiencies listed in Table 2 are for only one combination of power and temperature: full load and 25 oC. SynQor's converters are designed to hold th ...
Power factor
In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of -1 to 1. A power factor of less than one means that the voltage and current waveforms are not in phase, reducing the instantaneous product of the two waveforms (V x I). Real power is the capacity of the circuit for performing work in a particular time. Apparent power is the product of the current and voltage of the circuit. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power will be greater than the real power. A negative power factor occurs when the device (which is normally the load) generates power, which then flows back towards the source, which is normally considered the generator.In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor.Linear loads with low power factor (such as induction motors) can be corrected with a passive network of capacitors or inductors. Non-linear loads, such as rectifiers, distort the current drawn from the system. In such cases, active or passive power factor correction may be used to counteract the distortion and raise the power factor. The devices for correction of the power factor may be at a central substation, spread out over a distribution system, or built into power-consuming equipment.