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Synchronous Machine
Synchronous Machine

... Transient Short Circuit Current: High Bav → low Tph → low leakage reactance (Xl )→ high short circuit current Voltage Rating: In high voltage machines slot width required is more to accommodate thicker insulation →smaller tooth width → small allowable Bav Stability : Pmax =VE/Xs . Since high Bav giv ...
MTP3055 - Department of Electrical Engineering, University of
MTP3055 - Department of Electrical Engineering, University of

... including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must b ...
AND8273 - Design of a 100 W Active Clamp Forward DC
AND8273 - Design of a 100 W Active Clamp Forward DC

... dc−dc converter. This IC operates from an input supply up to 150 V, thus covering the input voltages usually found in telecom, datacom and 42 V automotive systems. One can also note that the NCP1562 can be used in mains related applications (e.g. desktop, server, flat TVs) as it can be supplied by a ...
PSU_Part4_IsolatedDCDC - Renesas E
PSU_Part4_IsolatedDCDC - Renesas E

... Flyback and Half-bridge examples.  Flyback: By monitoring ZCD winding in the transformer, turns the MOSFET from off to on at the same time secondary side current becomes zero (zero current switching: ZCS). -> This type is called a (flyback) quasi-resonant converter.  Half-bridge: Connect an induct ...
Lecture 1: AC Fundamental
Lecture 1: AC Fundamental

... Chapter (15): AC Fundamentals  Sinusoidal ac Voltage One complete variation is referred to as a cycle. Starting at zero, the voltage increases to a positive peak amplitude, decreases to zero, changes polarity, increases to a negative peak amplitude, then returns again to zero.  Since the waveform ...
NOVA Family of Products
NOVA Family of Products

... recognition of the total expense surrounding the application and life of equipment. Initial purchase cost is only one element, as installation, maintenance, malice, and disposal must also be considered during the equipment’s useful life. ...
Current Source Modular Multilevel Converter for HVDC and FACTS
Current Source Modular Multilevel Converter for HVDC and FACTS

... The series connection of current source parallel links is dual to the parallel connection of voltage source chain links, as shown in Fig. 9. A capacitor is connected in parallel to each parallel link. These capacitors are essential and may serve three major functions:  Voltage sharing. Because each ...
Drain current injection circuitry for enabling the use of super
Drain current injection circuitry for enabling the use of super

... been supplied by the DCI circuit. The injected current then falls to zero as the supply supports the full load current and the device’s Coss is charged to approximately 90V. At this point D is reverse biased and stops conducting. Any excess inductor current is forced into Q3 and the associated energ ...
DLD101 LINEAR MODE CURRENT SINK LED DRIVER DFN3030D-8
DLD101 LINEAR MODE CURRENT SINK LED DRIVER DFN3030D-8

Quasi-Resonant Full-Wave Zero-Current Switching Buck
Quasi-Resonant Full-Wave Zero-Current Switching Buck

... The placed resonant circuit between output filter and input source is utilized to force the current and voltage to become zero. The resonant circuits are classified in three categories, conventional, quasi-resonant and multi-resonant. Quasi-resonant converters can be performed as half-wave [9] and f ...
www.LEUTRON.DE
www.LEUTRON.DE

... Until now, SPDs that had been designed for normal supply voltages were used at the dc side to protect both L+ and L- against ground potential. These SPDs were laid out to at least 50% of the maximum no-load voltage of the PV generator. After years of usage an insulation fault may occur in the PV gen ...
Chapter 18
Chapter 18

...  The charging or discharging of a capacitor, and the energising and de-energising of an inductor, are each associated with exponential voltage and current waveforms  Circuits that contain resistance, and either capacitance or inductance, are termed first-order systems  The increasing or decreasin ...
universe photonics co., ltd
universe photonics co., ltd

... Transceivers offer a metal case and shielded design to minimize the EMI challenge facing the host equipment designer. These transceivers provided superior EMI performance. This greatly assists the designer in the management of the overall system EMI performance. ...
ekonomski fakultet podgorica
ekonomski fakultet podgorica

EDUCATIONAL LCD OSCILLOSCOPE eDu08
EDUCATIONAL LCD OSCILLOSCOPE eDu08

... IMPORTANT!: You should not attempt to measure voltages beyond 30Vp (=30VDC or 21VAC). If you are unsure if the voltage you’re about to measure is within the limits of the scope, then don’t measure it, or check with a multimeter first. Also: Never attempt to perform measurements on equipment that is ...
Meters and Electronic Controls.indd
Meters and Electronic Controls.indd

BU7295HFV
BU7295HFV

... (Note 3) The voltage difference between inverting input and non-inverting input is the differential input voltage. Then input terminal voltage is set to more than VSS. (Note 4) An excessive input current will flow when input voltages of more than VDD+0.6V or less than VSS-0.6V are applied. The input ...
GUIDE TO CONSTANT-VOLTAGE SYSTEMS
GUIDE TO CONSTANT-VOLTAGE SYSTEMS

... Other high-voltage systems might run at other voltages. Although rare, the 200V system has been used for cable length exceeding one mile. ADVANTAGES OF 70V OPERATION As stated before, a 70V line reduces power loss due to cable heating. That's because the speaker cable carries the audio signal as a ...
DRV135 数据资料 dataSheet 下载
DRV135 数据资料 dataSheet 下载

... single-ended, ground-referenced input to a floating differential output with +6dB gain (G = 2). Figure 1 shows the basic connections required for operation. Decoupling capacitors placed close to the device pins are strongly recommended in applications with noisy or high impedance power ...
LT1512
LT1512

... grounded end of the capacitor must be connected directly to the ground plane to which the GND pin is connected. GND S, GND: The LT1512 uses separate ground pins for switch current (GND) and the control circuitry (GND S). This isolates the control ground from any induced voltage created by fast switc ...
NEC Class 2 Power Circuits and Power Supplies
NEC Class 2 Power Circuits and Power Supplies

... Class 2 requirements for the power sources are also defined in the NEC. Due to the voltage limits of class 2, only the load side of a DC power supply can meet the class 2 circuit requirements. The following technical note describes the requirements of a Class 2 power supply. Using the SDP4-24100 as ...
RF5375 2.4GHz TO 2.5GHz, 802.11b/g/n WiFi FRONT END MODULE Features
RF5375 2.4GHz TO 2.5GHz, 802.11b/g/n WiFi FRONT END MODULE Features

... Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Abs ...
Advanced Protection, Automation, and Control Functions
Advanced Protection, Automation, and Control Functions

Performance of Relaying During Wide-area Stressed
Performance of Relaying During Wide-area Stressed

Paper Title (use style: paper title)
Paper Title (use style: paper title)

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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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