Reduced voltage method for starting squirrel cage induction motor
... After completing this article, we are able to compare induction motor with synchronous motor. Point wise comparison between the induction motor and synchronous motor is written below, (a) Induction motor always operates at lagging power factor while the synchronous motor can operate at both lagging ...
... After completing this article, we are able to compare induction motor with synchronous motor. Point wise comparison between the induction motor and synchronous motor is written below, (a) Induction motor always operates at lagging power factor while the synchronous motor can operate at both lagging ...
Experiment 1-3
... Select a 1 k resistor, and measure its exact resistance using the Fluke multimeter. Select one of the diodes and construct the circuit shown in Figure 1, using the resistor you just measured, the Tektronix power supply, and two Fluke multimeters. One meter measures the voltage drop across the diode ...
... Select a 1 k resistor, and measure its exact resistance using the Fluke multimeter. Select one of the diodes and construct the circuit shown in Figure 1, using the resistor you just measured, the Tektronix power supply, and two Fluke multimeters. One meter measures the voltage drop across the diode ...
***DENOTES: POR posted online 600-V gate driver from TI enables
... Complementary devices to maximize system performance Every gate driver in a system requires the appropriate controller for the end application. TI offers several pulse-width modulation (PWM), resonant, power factor correction (PFC) and digital power controllers. With the UCC27714 and TI’s recently r ...
... Complementary devices to maximize system performance Every gate driver in a system requires the appropriate controller for the end application. TI offers several pulse-width modulation (PWM), resonant, power factor correction (PFC) and digital power controllers. With the UCC27714 and TI’s recently r ...
Diagnostic Radiology III
... an iron core • Law of Transformers still applies • Operates on principle of self-induction rather than mutual induction • Smaller increases or decreases in secondary voltage than normal transformers • Does not electrically isolate primary from secondary circuit ...
... an iron core • Law of Transformers still applies • Operates on principle of self-induction rather than mutual induction • Smaller increases or decreases in secondary voltage than normal transformers • Does not electrically isolate primary from secondary circuit ...
Value
... These Hall-effect sensors accurately track extremely small changes in magnetic flux density—changes generally too small to operate Hall-effect switches. As motion detectors, gear tooth sensors, and proximity detectors, they are magnetically driven mirrors of mechanical events. As sensitive monitors ...
... These Hall-effect sensors accurately track extremely small changes in magnetic flux density—changes generally too small to operate Hall-effect switches. As motion detectors, gear tooth sensors, and proximity detectors, they are magnetically driven mirrors of mechanical events. As sensitive monitors ...
Tool Box Talk Electrical Safety
... operating at 50 volts or more. The primary hazards associated with contact with live circuits include shock, electrocutions, indirect injuries associated with falls or other contact hazards resulting from involuntary muscle reactions. Most electrical circuits used in everyday construction applicatio ...
... operating at 50 volts or more. The primary hazards associated with contact with live circuits include shock, electrocutions, indirect injuries associated with falls or other contact hazards resulting from involuntary muscle reactions. Most electrical circuits used in everyday construction applicatio ...
EE 1312227
... power semiconductor devices over the last two densities, are being achieved through the use of the decades, have led to the development of power so-called switch mode operation, in which power semiconductor devices with high power ratings and semiconductor devices are controlled in ON=OFF very good ...
... power semiconductor devices over the last two densities, are being achieved through the use of the decades, have led to the development of power so-called switch mode operation, in which power semiconductor devices with high power ratings and semiconductor devices are controlled in ON=OFF very good ...
Neutral Point Clamped (Npc) Type Multilevel Inverter
... NPC type Multilevel inverters plays vital role in the field of power electronics and being extensively used in various industrial and commercial applications because it possess low electromagnetic interference and the efficiency is considerably high. NPC Multilevel inverters have become more favoure ...
... NPC type Multilevel inverters plays vital role in the field of power electronics and being extensively used in various industrial and commercial applications because it possess low electromagnetic interference and the efficiency is considerably high. NPC Multilevel inverters have become more favoure ...
Three Phase Three Level DC/DC Converter Using Active
... Therefore, a novel TPTL dc/dc converter adopting a symmetrical duty cycle control is proposed in this paper. Compared with the available TPTL converters, the proposed converter has fewer switches and simpler configuration. The voltage stress on all switches can be reduced to the half of the input vo ...
... Therefore, a novel TPTL dc/dc converter adopting a symmetrical duty cycle control is proposed in this paper. Compared with the available TPTL converters, the proposed converter has fewer switches and simpler configuration. The voltage stress on all switches can be reduced to the half of the input vo ...
K Direct Torque Control of Induction Motor Using Space
... Lower starting torque, which may be a serious issue with pumps or any devices with significant breakaway torque Increased complexity: more contactors and some sort of speed switch are needed Two shocks to the motor (one for the initial start and another when the motor switches from wye to delt ...
... Lower starting torque, which may be a serious issue with pumps or any devices with significant breakaway torque Increased complexity: more contactors and some sort of speed switch are needed Two shocks to the motor (one for the initial start and another when the motor switches from wye to delt ...
Transformers
... Different electrical devices require different amounts of electrical energy to operate. An electric stove requires a lot of electrical energy while a lamp requires very little. Some devices require different voltages and currents. A computer may require 12 V to operate, so the voltage in your home m ...
... Different electrical devices require different amounts of electrical energy to operate. An electric stove requires a lot of electrical energy while a lamp requires very little. Some devices require different voltages and currents. A computer may require 12 V to operate, so the voltage in your home m ...
Bertan 230 Series of High Voltage Power Supplies, Spellman High
... Isolated (Floating) Output-Option F Units up to and including 5kV can be provided with differential outputs capable of floating up to ±2kV from ground. Voltage programming and monitoring functions are normally referenced to ground. Current monitoring and metering is eliminated. Replace “R” suffix wi ...
... Isolated (Floating) Output-Option F Units up to and including 5kV can be provided with differential outputs capable of floating up to ±2kV from ground. Voltage programming and monitoring functions are normally referenced to ground. Current monitoring and metering is eliminated. Replace “R” suffix wi ...
BRSTM32MC1211
... control capable timers. This allows two brushless motors to be driven simultaneously, or to have a triple sample and hold current acquisition for very high‑end control systems. These features are supported by additional interrupt vectors and a second DMA controller. ...
... control capable timers. This allows two brushless motors to be driven simultaneously, or to have a triple sample and hold current acquisition for very high‑end control systems. These features are supported by additional interrupt vectors and a second DMA controller. ...
Overcurrents
... The fuse is a reliable overcurrent protective device. A “fusible” link or links encapsulated in a tube and connected to contact terminals comprise the fundamental elements of the basic fuse. Electrical resistance of the link is so low that it simply acts as a conductor. However, when destructive cur ...
... The fuse is a reliable overcurrent protective device. A “fusible” link or links encapsulated in a tube and connected to contact terminals comprise the fundamental elements of the basic fuse. Electrical resistance of the link is so low that it simply acts as a conductor. However, when destructive cur ...
Reverse polarity and overvoltage protection
... This is different from parallel transient voltage suppressor and fuse. Blow fuses have the obvious problem of being a one-time devices. PTC resettable fuses tend to be slow and they can conduct significant amount of current even in tripped state (to stay tripped, the fuse needs to maintain itself ho ...
... This is different from parallel transient voltage suppressor and fuse. Blow fuses have the obvious problem of being a one-time devices. PTC resettable fuses tend to be slow and they can conduct significant amount of current even in tripped state (to stay tripped, the fuse needs to maintain itself ho ...
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.