DISTRIBUTED GENERATION ISLANDING
... Active Anti-Islanding Impact Degradation of power quality and system stability as DG penetration becomes higher Currently the local islanding detection methods virtually guarantee that the DG will be unable to provide grid support or improve grid stability when the grid is stressed anti-islandi ...
... Active Anti-Islanding Impact Degradation of power quality and system stability as DG penetration becomes higher Currently the local islanding detection methods virtually guarantee that the DG will be unable to provide grid support or improve grid stability when the grid is stressed anti-islandi ...
AA23166170
... compensate the source current become purely sinusoidal and deliver the minimum average real power to the load. Although under non-linear loading it can guarantee only one optimal criterion, in this paper multiple objectives for shunt power compensation are proposed. In addition, power factor correct ...
... compensate the source current become purely sinusoidal and deliver the minimum average real power to the load. Although under non-linear loading it can guarantee only one optimal criterion, in this paper multiple objectives for shunt power compensation are proposed. In addition, power factor correct ...
Laboratory Test Analysis of Power Semiconductors
... Fig. 9: Characteristic curve of a GTO (same as standard thyristor) The negative non-conducting zone is not used during the laboratory test. The device works on the positive non-conducting zone if a positive anode-cathode voltage UAK is used but the ignition (= switch on) has not been done. This is t ...
... Fig. 9: Characteristic curve of a GTO (same as standard thyristor) The negative non-conducting zone is not used during the laboratory test. The device works on the positive non-conducting zone if a positive anode-cathode voltage UAK is used but the ignition (= switch on) has not been done. This is t ...
Final Report - Edge - Rochester Institute of Technology
... Sun’s rays without the need of mechanical tracking schemes. That is, while the system is in use, each panel array would be positioned so the sun’s angle of incidence is maximized throughout the day. Thus the energy varies from branch to branch throughout the day. Once the energy is harvested from th ...
... Sun’s rays without the need of mechanical tracking schemes. That is, while the system is in use, each panel array would be positioned so the sun’s angle of incidence is maximized throughout the day. Thus the energy varies from branch to branch throughout the day. Once the energy is harvested from th ...
... 1) Calculate the two break frequencies using the given values. Measure the two break frequencies by finding the points where v0 / vi 0.7 . Section 5.6 of GIL provides further instructions if needed. Although any amplitude input signal can be used a good recommended signal is 10 V (p-p). The measur ...
Fast Opening Switch Approach for High-Voltage Vacuum
... chosen. Because of the heat load of dc mode operation, a direct liquid cooled version is deemed necessary. This requires the use of some additional auxiliary components such as a pump unit with integrated electronic, active radiator, fittings, flexible tubes and Perflourinated Polyether coolant (PFP ...
... chosen. Because of the heat load of dc mode operation, a direct liquid cooled version is deemed necessary. This requires the use of some additional auxiliary components such as a pump unit with integrated electronic, active radiator, fittings, flexible tubes and Perflourinated Polyether coolant (PFP ...
Circuits - Single-Chip Frequency Converter
... build many different oscillator types with few external components. Figure 6 shows some of the main versions; there are many others. The NE602 can be used as an oscillator without the mixer. One way is to sam~ l the e LO output at pin 7 :a better way is to unbalance the mixer and use it to amplify t ...
... build many different oscillator types with few external components. Figure 6 shows some of the main versions; there are many others. The NE602 can be used as an oscillator without the mixer. One way is to sam~ l the e LO output at pin 7 :a better way is to unbalance the mixer and use it to amplify t ...
A 400 MHz DDS Core Unit
... the capacitor C23 and the resistor R14 or by the microcontroller subsystem, but in this case C23 must be removed. U2 provides the regulation for the 3,3 Volt Digital Vdd power, while U3 for the 1,8 Volt Analo g Vdd power, both of them are fed by the Vcc (normally +5 Volt) power net. Vcc is also rout ...
... the capacitor C23 and the resistor R14 or by the microcontroller subsystem, but in this case C23 must be removed. U2 provides the regulation for the 3,3 Volt Digital Vdd power, while U3 for the 1,8 Volt Analo g Vdd power, both of them are fed by the Vcc (normally +5 Volt) power net. Vcc is also rout ...
Practical Feedback Loop Design Considerations for
... desired value and then influencing the value of the system variable using the error signal. Switched-mode power supply systems inevitably require feedback control to regulate the output voltage and/or current to a desired value. Fig. 1 shows a simplified feedback circuit for a boost converter. The o ...
... desired value and then influencing the value of the system variable using the error signal. Switched-mode power supply systems inevitably require feedback control to regulate the output voltage and/or current to a desired value. Fig. 1 shows a simplified feedback circuit for a boost converter. The o ...
Timers Two-state Relay Type SG 125
... 230 VAC ± 15%, 45 to 65 Hz 115 VAC ± 15%, 45 to 65 Hz 24 VAC ± 15%, 45 to 65 Hz ≥ 40 ms ≥ 2.0 kVAC (rms) (supply/elec.) Rated transient protection volt. 4 kV (1.2/50 µs) (line/neutral) Power supply DC type Installation cat. III (IEC 60664) Rated operational volt. 724 24 VDC ± 15% (pin 2 pos.) Rated ...
... 230 VAC ± 15%, 45 to 65 Hz 115 VAC ± 15%, 45 to 65 Hz 24 VAC ± 15%, 45 to 65 Hz ≥ 40 ms ≥ 2.0 kVAC (rms) (supply/elec.) Rated transient protection volt. 4 kV (1.2/50 µs) (line/neutral) Power supply DC type Installation cat. III (IEC 60664) Rated operational volt. 724 24 VDC ± 15% (pin 2 pos.) Rated ...
Quantum LX Temperature Input Signal Testing
... Quantum LX Temperature Input Signal Testing If the supply voltage is within the proper range with all connectors connected, measure the microamps of the signal from the sensor. Measure the microamps with your meter in series with the signal wire (terminal 2 or 5). Refer to the Analog board wiring ...
... Quantum LX Temperature Input Signal Testing If the supply voltage is within the proper range with all connectors connected, measure the microamps of the signal from the sensor. Measure the microamps with your meter in series with the signal wire (terminal 2 or 5). Refer to the Analog board wiring ...
McCamey Area Limits
... a result of the outages of multiple elements that are considered as feasible due to proximity of each other (i.e. shared structure or right-of-way) and not due to the absence of circuit breakers between elements. – System Impact: SOLs exceeded that would not expose a widespread portion of ERCOT even ...
... a result of the outages of multiple elements that are considered as feasible due to proximity of each other (i.e. shared structure or right-of-way) and not due to the absence of circuit breakers between elements. – System Impact: SOLs exceeded that would not expose a widespread portion of ERCOT even ...
O044057984
... In this paper, a new TL LLC SRC for highand wide-input voltage applications is introduced, and its analysis results under wide input voltage are presented. In high-input-voltage applications such as three-phase systems, fuel cell systems, photovoltaic systems, and ship electric power distribution sy ...
... In this paper, a new TL LLC SRC for highand wide-input voltage applications is introduced, and its analysis results under wide input voltage are presented. In high-input-voltage applications such as three-phase systems, fuel cell systems, photovoltaic systems, and ship electric power distribution sy ...
TS6001-2.5V Voltage Reference Demo Board
... Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, ...
... Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, ...
Real Time Implementation of PI and PID Controlled Cascaded H
... noted that high switching frequency PWM means lower efficiency and higher switching loss and low switching frequency PWM means higher efficiency and lower switching loss [5]. The patent result search shown that multilevel inverter circuits have been around for more than 25 years. Today, in medium vo ...
... noted that high switching frequency PWM means lower efficiency and higher switching loss and low switching frequency PWM means higher efficiency and lower switching loss [5]. The patent result search shown that multilevel inverter circuits have been around for more than 25 years. Today, in medium vo ...
CN-0036 8位至12位DAC AD5426/AD5432/AD5443的精密、双极性配置
... number of bits: D = 0 to 255 (8-bit AD5426), D = 0 to 1023 (10-bit AD5432), and D = 0 to 4095 (12-bit AD5443). In some applications, it may be necessary to generate a full 4-quadrant multiplying operation or a bipolar output swing. This can easily be accomplished by using another external amplifier ...
... number of bits: D = 0 to 255 (8-bit AD5426), D = 0 to 1023 (10-bit AD5432), and D = 0 to 4095 (12-bit AD5443). In some applications, it may be necessary to generate a full 4-quadrant multiplying operation or a bipolar output swing. This can easily be accomplished by using another external amplifier ...
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.