Electromagnetism - Physical Science
... current(only work when there is one), electromagnets are used in a variety of electric ...
... current(only work when there is one), electromagnets are used in a variety of electric ...
Doubly-Fed Induction Generator Wind Turbine Model for Fault Ride-Through Investigation Yutana Chongjarearn
... the operating slip range of DFIG is limited, the effects of the former term are very small and also the stator flux is assumed constant. Therefore, the reference rotor voltages for control of active and reactive powers can be expressed as ...
... the operating slip range of DFIG is limited, the effects of the former term are very small and also the stator flux is assumed constant. Therefore, the reference rotor voltages for control of active and reactive powers can be expressed as ...
Development of the Klystron Modulator using a High
... capacitor charging switch-mode power supplies. Four SMART 5015 power supplies (Dong-A Hitech model) are used in parallel. This combination can charge the pulse forming network (PFN) to 50 kV at 57.8 kJ per second. The charging voltage is going linear up to the desired PFN level VDC with charging tim ...
... capacitor charging switch-mode power supplies. Four SMART 5015 power supplies (Dong-A Hitech model) are used in parallel. This combination can charge the pulse forming network (PFN) to 50 kV at 57.8 kJ per second. The charging voltage is going linear up to the desired PFN level VDC with charging tim ...
Automatic Voltage Control
... Voltage control is an integral part of power system operation. Controlling voltages on the power system allows for the efficient transmission of power whilst respecting equipment limitations. One of the most efficient ways to control voltages on the power system is to place generators in voltage con ...
... Voltage control is an integral part of power system operation. Controlling voltages on the power system allows for the efficient transmission of power whilst respecting equipment limitations. One of the most efficient ways to control voltages on the power system is to place generators in voltage con ...
Produce High DC/DC Step-Down Ratios in Tight Spaces with 30ns
... Introduction It can be a challenge to design a DC/ DC converter that takes a high voltage automotive or industrial power supply down to the 1.5V or lower voltages required by today’s microprocessors and programmable logic chips. To maintain efficiency and performance, designers are often forced to c ...
... Introduction It can be a challenge to design a DC/ DC converter that takes a high voltage automotive or industrial power supply down to the 1.5V or lower voltages required by today’s microprocessors and programmable logic chips. To maintain efficiency and performance, designers are often forced to c ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... power utilities, the problems of waveform distortion start appear on the transmission side due to the increasing implementation of HVDC and FACTS devices, which are used in increasing the transmission line power capability. Also in the generation side a problem of waveform distortion may arise becau ...
... power utilities, the problems of waveform distortion start appear on the transmission side due to the increasing implementation of HVDC and FACTS devices, which are used in increasing the transmission line power capability. Also in the generation side a problem of waveform distortion may arise becau ...
Latch-Up and its Prevention
... Assume the Rwell and Rsub are significantly large so that they cause open circuit connections, this results in low current gains and the currents would be reverse leakage currents for both the npn and pnp transistors. If some external disturbance occurs, causing the collector current of one of the p ...
... Assume the Rwell and Rsub are significantly large so that they cause open circuit connections, this results in low current gains and the currents would be reverse leakage currents for both the npn and pnp transistors. If some external disturbance occurs, causing the collector current of one of the p ...
Dynamic Braking of Induction Motors
... Capacitor Braking Method • Disconnect the motor from the line and connect a capacitor bank to the stator terminals. • Motor behaves as a self-excited induction generator. • Rotational energy is dissipated as I2R losses in the rotor and stator windings. • Increase the effect by adding resistor load. ...
... Capacitor Braking Method • Disconnect the motor from the line and connect a capacitor bank to the stator terminals. • Motor behaves as a self-excited induction generator. • Rotational energy is dissipated as I2R losses in the rotor and stator windings. • Increase the effect by adding resistor load. ...
2STN2540
... Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ...
... Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ...
a quasi-z-source direct matrix converter feeding a vector controlled
... buck and boost condition in four-quadrant modes with reduced number of switches, therefore achieving low cost, high efficiency, and reliability, compared with back-to-back converter. The use of variable speed motor drives is a growing trend in industrial and automotive applications, guaranteeing hig ...
... buck and boost condition in four-quadrant modes with reduced number of switches, therefore achieving low cost, high efficiency, and reliability, compared with back-to-back converter. The use of variable speed motor drives is a growing trend in industrial and automotive applications, guaranteeing hig ...
lab 04- comparators
... Protoboards allow the ready assembly of low power, low voltage electronic circuits. Good assembly practices will minimize the problems associated with poor connections, and will aid troubleshooting. Most protoboard wiring is done with low gauge, single strand wiring. A wire is inserted into a slot i ...
... Protoboards allow the ready assembly of low power, low voltage electronic circuits. Good assembly practices will minimize the problems associated with poor connections, and will aid troubleshooting. Most protoboard wiring is done with low gauge, single strand wiring. A wire is inserted into a slot i ...
Multilevel Inverters with Imbricated Switching Cells, PWM
... where fCk and fCk+1 stand for the connection functions for Ak and Ak+1 switches and can only have two values: 0 or 1 (according to the state of the switches) [5]. For instance, if fCk =1 when the Ak switch is off and fCk=0 when the Ak switch is on. For multilevel converters, in order to obtain equal ...
... where fCk and fCk+1 stand for the connection functions for Ak and Ak+1 switches and can only have two values: 0 or 1 (according to the state of the switches) [5]. For instance, if fCk =1 when the Ak switch is off and fCk=0 when the Ak switch is on. For multilevel converters, in order to obtain equal ...
STP 3 & 4 8.0 Electric Power 8.1 Introduction
... indirectly through bus tie breakers. The three Class 1E buses may be supplied power from the other winding of the reserve auxiliary transformer. Unit auxiliary transformers (UATs) A & B each provide power to three non-Class 1E buses and one Class 1E bus. UAT C provides power to one non-Class 1E bus ...
... indirectly through bus tie breakers. The three Class 1E buses may be supplied power from the other winding of the reserve auxiliary transformer. Unit auxiliary transformers (UATs) A & B each provide power to three non-Class 1E buses and one Class 1E bus. UAT C provides power to one non-Class 1E bus ...
Solutionto QuestionBank
... The two fixed coils in series act as the current coil and the moving coil in series with R act as the potential coil. The moving coil is pivoted between the two fixed coils carries a current I2 proportional to V. This current is fed to m through two springs which also provides the necessary controll ...
... The two fixed coils in series act as the current coil and the moving coil in series with R act as the potential coil. The moving coil is pivoted between the two fixed coils carries a current I2 proportional to V. This current is fed to m through two springs which also provides the necessary controll ...
Using Impedance Tuners to Extend the Agilent 8960 Beyond 50Ω
... being held close to the body or in a pocket surrounded by coins, etc. Each of these scenarios can be regarded as non-ideal from an RF standpoint, meaning non-50 ohm. We are able to use a single tuner to vary the VSWR magnitude and phase seen by the antenna port of the phone and test its performance ...
... being held close to the body or in a pocket surrounded by coins, etc. Each of these scenarios can be regarded as non-ideal from an RF standpoint, meaning non-50 ohm. We are able to use a single tuner to vary the VSWR magnitude and phase seen by the antenna port of the phone and test its performance ...
New Comparators Feature Micropower Operation Under All
... Under All Conditions – Design Note 137 Jim Williams Some micropower comparators have operating modes that allow excessive current drain. In particular, poorly designed devices can conduct large transient currents during switching. Such behavior causes dramatically increased power drain with rising f ...
... Under All Conditions – Design Note 137 Jim Williams Some micropower comparators have operating modes that allow excessive current drain. In particular, poorly designed devices can conduct large transient currents during switching. Such behavior causes dramatically increased power drain with rising f ...
Three-phase electric power
Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. A three-phase system is usually more economical than an equivalent single-phase or two-phase system at the same line to ground voltage because it uses less conductor material to transmit electrical power.The three-phase system was independently invented by Galileo Ferraris, Mikhail Dolivo-Dobrovolsky, Jonas Wenström and Nikola Tesla in the late 1880s.