A Higher Voltage Multilevel Inverter with Reduced Number of Power
... the ability of its modulation. So, if an error occurs in one of the blocks, it can replace or fix by using a control system, but there are some disadvantages such as high number of dc voltage sources and power electronic ...
... the ability of its modulation. So, if an error occurs in one of the blocks, it can replace or fix by using a control system, but there are some disadvantages such as high number of dc voltage sources and power electronic ...
Medium Voltage Variable Frequency Drives
... was developed into practical products. Because of thyristor structure, GTOs can have blocking voltages as high as 6kV and can turn off as much as several thousand amperes of current. The turn-off gain is around 3 to 4; that is, it takes 1/4 to 1/3 of the anode current as a negative current in the ga ...
... was developed into practical products. Because of thyristor structure, GTOs can have blocking voltages as high as 6kV and can turn off as much as several thousand amperes of current. The turn-off gain is around 3 to 4; that is, it takes 1/4 to 1/3 of the anode current as a negative current in the ga ...
Virtex-5 FPGA System Power Design Considerations
... In the past, ASSPs and ASICs often consumed the majority of power in system power budgets. With the increase in FPGA performance, functions, and density, FPGA power consumption is now a key design consideration and must meet certain industry standards for maximum power allowed. For example, the comm ...
... In the past, ASSPs and ASICs often consumed the majority of power in system power budgets. With the increase in FPGA performance, functions, and density, FPGA power consumption is now a key design consideration and must meet certain industry standards for maximum power allowed. For example, the comm ...
POWER METER PW3336/PW3337
... Connect multiple instruments to synchronize their operation, including display updates, data updates, and start of integration. Measure all data with simultaneous parallel processing, including RMS values, mean values, fundamental wave components, THD, and harmonic components. Wide frequency band fr ...
... Connect multiple instruments to synchronize their operation, including display updates, data updates, and start of integration. Measure all data with simultaneous parallel processing, including RMS values, mean values, fundamental wave components, THD, and harmonic components. Wide frequency band fr ...
Chapter 8 Electrical Power 8.1 Introduction
... protection using separate and independent current and control circuits. Normal and alternate preferred power conductors located between the Fermi 3 UATs and RATs and the 345 kV switchyard buses are protected by dual high-speed current differential schemes. The 345 kV switchyard circuit breakers are ...
... protection using separate and independent current and control circuits. Normal and alternate preferred power conductors located between the Fermi 3 UATs and RATs and the 345 kV switchyard buses are protected by dual high-speed current differential schemes. The 345 kV switchyard circuit breakers are ...
PDF
... converter commutation count, and hence its switching losses. Also presented in Section IV is two sets of higher level control schemes with the first used for controlling one set of three-phase outputs so as to compensate for harmonic currents, reactive power flow and three-phase unbalance caused by ...
... converter commutation count, and hence its switching losses. Also presented in Section IV is two sets of higher level control schemes with the first used for controlling one set of three-phase outputs so as to compensate for harmonic currents, reactive power flow and three-phase unbalance caused by ...
TPS2375-77 - Texas Instruments
... inrush current limit control current into the pin. The PG circuit monitors the RTN voltage and also uses it as the return for the PG pin pulldown transistor. The internal MOSFET body diode clamps VSS to RTN when voltage is present between VDD and RTN and the PoE input is not present. PG: This pin go ...
... inrush current limit control current into the pin. The PG circuit monitors the RTN voltage and also uses it as the return for the PG pin pulldown transistor. The internal MOSFET body diode clamps VSS to RTN when voltage is present between VDD and RTN and the PoE input is not present. PG: This pin go ...
AAT4672 数据资料DataSheet下载
... higher than the under voltage lockout (UVLO) threshold, and MAIN pin voltage is greater than the AUX pin voltage plus 200mV. The AUX pin connects to the OUT pin only when the MAIN pin voltage drops 0.2V below the AUX pin voltage and the AUX pin voltage is greater than the UVLO threshold. If both inp ...
... higher than the under voltage lockout (UVLO) threshold, and MAIN pin voltage is greater than the AUX pin voltage plus 200mV. The AUX pin connects to the OUT pin only when the MAIN pin voltage drops 0.2V below the AUX pin voltage and the AUX pin voltage is greater than the UVLO threshold. If both inp ...
AN10909 Low V transistors in medium power load switch applications
... for the design. They define the performance of especially TR1 where most power losses occur. The control switch TR2 typically is a general-purpose transistor like a BC847 or PMBT3904, and has to deliver currents in the range of a few up to 100 mA as base drive for TR1. Typical values for hFE are aro ...
... for the design. They define the performance of especially TR1 where most power losses occur. The control switch TR2 typically is a general-purpose transistor like a BC847 or PMBT3904, and has to deliver currents in the range of a few up to 100 mA as base drive for TR1. Typical values for hFE are aro ...
LTC4415 - Dual 4A Ideal Diodes with Adjustable Current Limit
... Note 4: The LTC4415 includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may i ...
... Note 4: The LTC4415 includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may i ...
SKY77764 数据资料DataSheet下载
... match into a 50-ohm load, realized off-chip within the module package, optimizes efficiency and power performance. The SKY77764 is manufactured with Skyworks' InGaP GaAs Heterojunction Bipolar Transistor (HBT) process which provides for all positive voltage DC supply operation and maintains high eff ...
... match into a 50-ohm load, realized off-chip within the module package, optimizes efficiency and power performance. The SKY77764 is manufactured with Skyworks' InGaP GaAs Heterojunction Bipolar Transistor (HBT) process which provides for all positive voltage DC supply operation and maintains high eff ...
Features General Description
... line. The peak-charging effect, which occurs on the input filter capacitor in these supplies, causes brief high-amplitude pulses of current to flow from the power line, rather than a sinusoidal current inphase with the line voltage. Such supplies present a power factor to the line of less than one (i. ...
... line. The peak-charging effect, which occurs on the input filter capacitor in these supplies, causes brief high-amplitude pulses of current to flow from the power line, rather than a sinusoidal current inphase with the line voltage. Such supplies present a power factor to the line of less than one (i. ...
AND8353 - ON Semiconductor
... delivering maximum power. The output voltage increases and over stresses the components. The NCP1607 incorporates two features to protect the application if FB is floating. The internal pull-down resistor, RFB, ensures that the FB pin is pulled low if it is floating. Additionally, an internal timer ...
... delivering maximum power. The output voltage increases and over stresses the components. The NCP1607 incorporates two features to protect the application if FB is floating. The internal pull-down resistor, RFB, ensures that the FB pin is pulled low if it is floating. Additionally, an internal timer ...
Keysight Technologies Right Load Switching and Simulation Design
... either a high or low side driver. Each output is connected with different load and the test will either be sequential or concurrent. At lower power levels, these can usually be managed with general purpose switches. However, when it comes to higher power levels of currents over 5 amps, such switchin ...
... either a high or low side driver. Each output is connected with different load and the test will either be sequential or concurrent. At lower power levels, these can usually be managed with general purpose switches. However, when it comes to higher power levels of currents over 5 amps, such switchin ...
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.