Dynamic Voltage Restorer (DVR) System for Compensation of
... The problem of voltage sags and its severe impact on sensitive loads is well known. To solve this problem, The DVR is a modern and important custom power device for compensation voltage sags in power distribution systems . The Dynamic Vo ltage Restorer (DVR) is fast, flexib le and efficient solution ...
... The problem of voltage sags and its severe impact on sensitive loads is well known. To solve this problem, The DVR is a modern and important custom power device for compensation voltage sags in power distribution systems . The Dynamic Vo ltage Restorer (DVR) is fast, flexib le and efficient solution ...
NCP1380 - ONSemi
... valley is reached, the controller continues to reduce the frequency further down, offering excellent efficiency over a wide operating range. Thanks to a fault timer combined to an OPP circuitry, the controller is able to efficiently limit the output power at high−line. • Quasi−Resonance Current−mode ...
... valley is reached, the controller continues to reduce the frequency further down, offering excellent efficiency over a wide operating range. Thanks to a fault timer combined to an OPP circuitry, the controller is able to efficiently limit the output power at high−line. • Quasi−Resonance Current−mode ...
design a three phase controlled rectifier for use in the laboratory
... The purpose of this project is to successfully convert three phase ac to dc conversion of electric power using SCRs. AC to DC line commutated converters are used as the most usual choice for application. This is due to simplicity of the circuits requiring a minimum number of active and passive compo ...
... The purpose of this project is to successfully convert three phase ac to dc conversion of electric power using SCRs. AC to DC line commutated converters are used as the most usual choice for application. This is due to simplicity of the circuits requiring a minimum number of active and passive compo ...
MAX5886 3.3V, 12-Bit, 500Msps High Dynamic Performance DAC with Differential LVDS Inputs
... speeds up to 500MHz. The converter consists of separate input and DAC registers, followed by a currentsteering circuit. This circuit is capable of generating differential full-scale currents in the range of 2mA to 20mA. An internal current-switching network in combination with external 50Ω terminati ...
... speeds up to 500MHz. The converter consists of separate input and DAC registers, followed by a currentsteering circuit. This circuit is capable of generating differential full-scale currents in the range of 2mA to 20mA. An internal current-switching network in combination with external 50Ω terminati ...
... (OPF) has been solved an optimization problem where the objective function, equality and inequality constraints are nonlinear equation [1]. The Flexible AC Transmission System (FACTS) have been considered to maximize the use of existing transmission facilities. In this paper FACTS devices have been ...
Tunable Sensors for Process-Aware Voltage Scaling
... • Vmin_chip = max. Vmin of critical paths of a testcase • Vmin_est = max. Vmin of 3 ROs • For each testcase, calculate Vmin_est - Vmin_chip of every Monte Carlo sample • A chip is safe when Vmin_est - Vmin_chip > 0 ...
... • Vmin_chip = max. Vmin of critical paths of a testcase • Vmin_est = max. Vmin of 3 ROs • For each testcase, calculate Vmin_est - Vmin_chip of every Monte Carlo sample • A chip is safe when Vmin_est - Vmin_chip > 0 ...
DAC811 - Texas Instruments
... code that should produce zero voltage output, and adjust the offset potentiometer for zero output. For bipolar (BOB, BTC) configurations, apply the digital input code that should produce the maximum negative output voltage and adjust the offset potentiometer for minus full scale voltage. Example: If ...
... code that should produce zero voltage output, and adjust the offset potentiometer for zero output. For bipolar (BOB, BTC) configurations, apply the digital input code that should produce the maximum negative output voltage and adjust the offset potentiometer for minus full scale voltage. Example: If ...
microcontroller based control of three phase bldc motor
... The speed can be controlled in a closed loop by measuring the actual speed of the motor. If the speed is greater than the desired rated speed, then all the transistors are turned off for a short duration and then again excited based on the Hall position and accordingly speed can be adjusted to get c ...
... The speed can be controlled in a closed loop by measuring the actual speed of the motor. If the speed is greater than the desired rated speed, then all the transistors are turned off for a short duration and then again excited based on the Hall position and accordingly speed can be adjusted to get c ...
MAX5887 3.3V, 14-Bit, 500Msps High Dynamic Performance DAC with Differential LVDS Inputs
... speeds up to 500MHz. The converter consists of separate input and DAC registers, followed by a currentsteering circuit. This circuit is capable of generating differential full-scale currents in the range of 2mA to 20mA. An internal current-switching network in combination with external 50Ω terminati ...
... speeds up to 500MHz. The converter consists of separate input and DAC registers, followed by a currentsteering circuit. This circuit is capable of generating differential full-scale currents in the range of 2mA to 20mA. An internal current-switching network in combination with external 50Ω terminati ...
MAX16977 Evaluation Kit Evaluates: MAX16977 General Description Features
... The EV kit uses resistor R9 to connect the FSYNC pin to ground, which sets the switching frequency to the internal clock. An external logic-level clock can also connect to the provided FSYNC test point to synchronize the device. The external signal frequency must be 10% higher than the internal cloc ...
... The EV kit uses resistor R9 to connect the FSYNC pin to ground, which sets the switching frequency to the internal clock. An external logic-level clock can also connect to the provided FSYNC test point to synchronize the device. The external signal frequency must be 10% higher than the internal cloc ...
MC145193F - West Florida Components
... Random access of any register is provided (i.e., the registers may be accessed in any sequence). Data is retained in the registers over a supply range of 2.7 to 5.5 V. The formats are shown in Figures 14, 15, and 16. Din typically switches near 50% of VDD to maximize noise immunity. This input can b ...
... Random access of any register is provided (i.e., the registers may be accessed in any sequence). Data is retained in the registers over a supply range of 2.7 to 5.5 V. The formats are shown in Figures 14, 15, and 16. Din typically switches near 50% of VDD to maximize noise immunity. This input can b ...
all other uses, in any ... © 2013 IEEE
... amount of reactive power Qref may be needed in order to help the grid recover from voltage dips [12], [13]. As for the electric machine application, the Pref is set as negative for generator mode and positive for motor mode, there may be no or a few reactive power Qref requirements for magnetizing. ...
... amount of reactive power Qref may be needed in order to help the grid recover from voltage dips [12], [13]. As for the electric machine application, the Pref is set as negative for generator mode and positive for motor mode, there may be no or a few reactive power Qref requirements for magnetizing. ...
Enhancing Bit-Flip Recovery and PMU Design
... Regulator outputs may be programmed by control registers and defaults are set by non-volatile memory, or they can be fixed with external resistors. The latter is more convenient because the user has an infinite choice of values within the specification range as well as avoiding the delay, cost, and ...
... Regulator outputs may be programmed by control registers and defaults are set by non-volatile memory, or they can be fixed with external resistors. The latter is more convenient because the user has an infinite choice of values within the specification range as well as avoiding the delay, cost, and ...
A METHOD TO DETERMINE THE RELATIVE LOCATION OF
... When a motor starts, inrush current which is 5~10 times of rational current is absorbed into the motor and it lasts until the motor reaches steady state. The occurrence of inrush current makes the motor as a energy sink. Therefore the voltage drops and voltage sag happens. The waveform at PCC during ...
... When a motor starts, inrush current which is 5~10 times of rational current is absorbed into the motor and it lasts until the motor reaches steady state. The occurrence of inrush current makes the motor as a energy sink. Therefore the voltage drops and voltage sag happens. The waveform at PCC during ...
Sensorless Control for a Switched Reluctance Wind Generator
... calculating the slope of the phase current and using a reducedsize neural network (NN) whose inputs are the average current and the saturated inductance. The proposed estimator requires less processing time than traditional methods and can be fully implemented using a low-cost DSP with very few addi ...
... calculating the slope of the phase current and using a reducedsize neural network (NN) whose inputs are the average current and the saturated inductance. The proposed estimator requires less processing time than traditional methods and can be fully implemented using a low-cost DSP with very few addi ...
888-5031-001 - Gates Harris History
... the primary of a delta / wye step up transformer through three low voltage porcelain feed-through bushings. The high voltage secondary of the transformer is designed with (3) independent secondary windings, one for each different output level. Each of the (3) secondary windings are fed into its own ...
... the primary of a delta / wye step up transformer through three low voltage porcelain feed-through bushings. The high voltage secondary of the transformer is designed with (3) independent secondary windings, one for each different output level. Each of the (3) secondary windings are fed into its own ...
Atmel AT42QT1011 Single-key QTouch Touch Sensor IC Features
... The value of Cs also has a dramatic effect on sensitivity, and this can be increased in value with the trade-off of slower response time and more power. Increasing the electrode's surface area will not substantially increase touch sensitivity if its diameter is already much larger in surface area t ...
... The value of Cs also has a dramatic effect on sensitivity, and this can be increased in value with the trade-off of slower response time and more power. Increasing the electrode's surface area will not substantially increase touch sensitivity if its diameter is already much larger in surface area t ...
SA612A Double-balanced mixer and oscillator
... output is connected to the internal positive supply by a 1.5kΩ resistor. This permits direct output termination yet allows for balanced output as well. Figure 6 shows three single-ended output configurations and a balanced output. ...
... output is connected to the internal positive supply by a 1.5kΩ resistor. This permits direct output termination yet allows for balanced output as well. Figure 6 shows three single-ended output configurations and a balanced output. ...
IDT74FCT807BT/CT - Integrated Device Technology
... Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. Values for these conditions are examples of the IC formula. These limits are guaranteed but not tested. ...
... Per TTL driven input (VIN = 3.4V); all other inputs at VCC or GND. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. Values for these conditions are examples of the IC formula. These limits are guaranteed but not tested. ...
New Real time Voltage Stability Indicators Based on Phasor
... The performed analyses give evidence of the critical aspects, from the practical point of view, of methodologies based on real-time measurements at a given bus [3-6]. The main critical aspects are: Computing uncertainty of the equivalent grid parameters depending on the identification method, and ...
... The performed analyses give evidence of the critical aspects, from the practical point of view, of methodologies based on real-time measurements at a given bus [3-6]. The main critical aspects are: Computing uncertainty of the equivalent grid parameters depending on the identification method, and ...
Design and Implementation of a Hybrid Electric Bike
... The last two of our goals were met by selecting the appropriate components for the system, but were not achieved without some loss of comfort to the rider. In a system so small, it is fairly difficult to achieve all the objectives without compromise. Part II: Mechanical Design and System Integration ...
... The last two of our goals were met by selecting the appropriate components for the system, but were not achieved without some loss of comfort to the rider. In a system so small, it is fairly difficult to achieve all the objectives without compromise. Part II: Mechanical Design and System Integration ...
Section 3: Switching Regulators
... Also, like switchmode power conversion, linear power conversion and charge pump technology offer both regulators and controllers. So within the field of power conversion, the terms “regulator” and “controller” can have wide meaning. The most basic switcher topologies require only one transistor whic ...
... Also, like switchmode power conversion, linear power conversion and charge pump technology offer both regulators and controllers. So within the field of power conversion, the terms “regulator” and “controller” can have wide meaning. The most basic switcher topologies require only one transistor whic ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.