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Design of AC Filter for HVDC Transmission Project
Design of AC Filter for HVDC Transmission Project

... AC filter design is a complex subject which is related to the system impedance scanning, DC reactive power control, inverter harmonics calculation, the filter parameter tuning and setting selection. Its purpose is not only to consider the safety, technical and economic factors, to allocate reasonabl ...
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... Variable Frequency Drives (VFDs) are electronic devices used for the purpose of controlling the speed of AC motors. The benefits of a VFD’s application on industrial refrigeration system components and other equipment outweigh its tradeoffs, providing they are properly applied. The primary benefit o ...
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... RINTERNAL in Figure 6). The impedance of this resistor is 400kΩ to 500kΩ. If your design is using a resistor divider network to generate the 3.3V supply (for both VDD and CE to enable programming) from a larger voltage source, the 400kΩ (worst case) resistor needs to be taken into account as a paral ...
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... gate driver operation up to VS=-5V (typical) at VBS=15V. Logic input is compatible with standard CMOS outputs. The UVLO circuits prevent malfunction when VCC and VBS are lower than the specified threshold voltage. It is available in a space saving SOIC-8 Package. Minimum source and sink current capa ...
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... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
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... cylinder rotating in a plane perpendicular to a uniform static magnetic field. A potential difference is created between the center of the disc and the rim (or ends of the cylinder), the electrical polarity depending on the direction of rotation and the orientation of the field. It is also known as ...
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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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