STATCOM
... reference value, generating an error signal. This signal is the input of a PI (Proportional-Integral) controller. The output of the controller gives the phase angle δ necessary to produce a power flow between the STATCOM and the AC system, changing the converter output voltage level. If the error be ...
... reference value, generating an error signal. This signal is the input of a PI (Proportional-Integral) controller. The output of the controller gives the phase angle δ necessary to produce a power flow between the STATCOM and the AC system, changing the converter output voltage level. If the error be ...
a review paper on mitigation of power quality issues in
... In passive filter inductor and capacitor are used. The high order LCL filter using space of conventional L-filter for smoothing the output current. It’s saves large amount of cost and reduce the rate and size as the reduce in component. It has been used in grid connected inverter and pulse width mod ...
... In passive filter inductor and capacitor are used. The high order LCL filter using space of conventional L-filter for smoothing the output current. It’s saves large amount of cost and reduce the rate and size as the reduce in component. It has been used in grid connected inverter and pulse width mod ...
Saftronics Inc.
... *1 The applicable standard motor refers to a 4 pole standard motor. *2 The rated capacity indicates a 460V input voltage. *3 Voltages greater than the source voltage cannot be output. *4 Amperage values in parentheses ( ) are applicable to operation with 3 kHz or lower carrier frequencies (F26 = 3 o ...
... *1 The applicable standard motor refers to a 4 pole standard motor. *2 The rated capacity indicates a 460V input voltage. *3 Voltages greater than the source voltage cannot be output. *4 Amperage values in parentheses ( ) are applicable to operation with 3 kHz or lower carrier frequencies (F26 = 3 o ...
Selecting the Optimum Transient Voltage Suppressor
... Transients are by definition nonrepetitive, with energy levels that are difficult to ascertain. Moreover, they generally result from an unexpected failure elsewhere in the system or from natural phenomenon such as lightning. Because of this, determining energy content and duration of the surge is th ...
... Transients are by definition nonrepetitive, with energy levels that are difficult to ascertain. Moreover, they generally result from an unexpected failure elsewhere in the system or from natural phenomenon such as lightning. Because of this, determining energy content and duration of the surge is th ...
Pololu - Understanding Destructive LC Voltage Spikes
... (ESR). On older capacitors, that resistance tended to be high enough to dampen the LC oscillation to the point that any spikes were negligible or even non-existent. However, newer, increasingly common ceramic capacitors have extremely low ESRs that are generally a benefit but do very little to dampe ...
... (ESR). On older capacitors, that resistance tended to be high enough to dampen the LC oscillation to the point that any spikes were negligible or even non-existent. However, newer, increasingly common ceramic capacitors have extremely low ESRs that are generally a benefit but do very little to dampe ...
HMC725LC3C
... The HMC725LC3C is a XOR/XNOR gate function designed to support data transmission rates of up to 13 Gbps, and clock frequencies as high as 13 GHz. All input signals to the HMC725LC3C are terminated with 50 Ohms to ground on-chip, and maybe either AC or DC coupled. The differential outputs of the HMC7 ...
... The HMC725LC3C is a XOR/XNOR gate function designed to support data transmission rates of up to 13 Gbps, and clock frequencies as high as 13 GHz. All input signals to the HMC725LC3C are terminated with 50 Ohms to ground on-chip, and maybe either AC or DC coupled. The differential outputs of the HMC7 ...
Chapter 28
... how many should the secondary have? (b) You can save money with a transformer whose maximum primary current is 1.5 A. If your stereo draws a maximum of 3.3 A, will this transformer work? ...
... how many should the secondary have? (b) You can save money with a transformer whose maximum primary current is 1.5 A. If your stereo draws a maximum of 3.3 A, will this transformer work? ...
low-pass filter
... Let‘s apply a voltage Vin of a very low frequency and of an amplitude of 10V to the input of the circuit in the figure. If we let the frequency become lower and lower, the input voltage will become a DC voltage. This input voltage Vin of 10V will charge the capacitor and in a moment the output volta ...
... Let‘s apply a voltage Vin of a very low frequency and of an amplitude of 10V to the input of the circuit in the figure. If we let the frequency become lower and lower, the input voltage will become a DC voltage. This input voltage Vin of 10V will charge the capacitor and in a moment the output volta ...
SET 3 - contentcarry
... ∴ Current through 4 ohm resistor = 12 / 6 = 2 A Current through 4 ohm resistor = 12 / 4 = 3 A Current through 12 ohm resistor = 12 / 12 = 1A Current through 10 ohm resistor ...
... ∴ Current through 4 ohm resistor = 12 / 6 = 2 A Current through 4 ohm resistor = 12 / 4 = 3 A Current through 12 ohm resistor = 12 / 12 = 1A Current through 10 ohm resistor ...
l-17 nkd et ee nptel
... (capacitive) BC = ω C . The phase angle is φ = 0° , and the power factor is unity ( cos φ = 1 ). The total (supply) current is phase with the input voltage. So, the magnitude of the total current ( (V / R) ) in the circuit is only limited by resistance R. The phasor diagram is shown in Fig. 17.4b. T ...
... (capacitive) BC = ω C . The phase angle is φ = 0° , and the power factor is unity ( cos φ = 1 ). The total (supply) current is phase with the input voltage. So, the magnitude of the total current ( (V / R) ) in the circuit is only limited by resistance R. The phasor diagram is shown in Fig. 17.4b. T ...
Medium Voltage Switchgear Condition Assessments
... values of built-in indicators and to identify ageing factors, as well as malfunction of operating mechanisms, secondary system, etc. Actual personal Safety regulations have to be observed strictly during performing an audit as switchgears and substations are subjected to modifications during their ...
... values of built-in indicators and to identify ageing factors, as well as malfunction of operating mechanisms, secondary system, etc. Actual personal Safety regulations have to be observed strictly during performing an audit as switchgears and substations are subjected to modifications during their ...
Electrical Breakdown Of Small Gaps In Vacuum
... factor P can be written as d p = - Pwd exp - p i ' ] d+H where ,p is the value of P when the second electrode is located at a very large distance from the first one in comparison to H , and d is the interelectrode gap. However, for values of d close to that of H , the factor P increases rapidly. Boy ...
... factor P can be written as d p = - Pwd exp - p i ' ] d+H where ,p is the value of P when the second electrode is located at a very large distance from the first one in comparison to H , and d is the interelectrode gap. However, for values of d close to that of H , the factor P increases rapidly. Boy ...
Oscillators
... to give positive feedback, which an oscillator must have. The op-amp works with a bipolar supply, so the output can swing above and below ground. Note that the Wien network is returned to GND, not the negative supply. On the left is the negative feedback network. When the oscillator is running stabl ...
... to give positive feedback, which an oscillator must have. The op-amp works with a bipolar supply, so the output can swing above and below ground. Note that the Wien network is returned to GND, not the negative supply. On the left is the negative feedback network. When the oscillator is running stabl ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""