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The snubber is a transformer-like fault-protection device in the heating neutral beam of a fusion device, such as the ITER, which is designed to suppress the short-circuit current and protect the ITER during High Voltage sparking. To study the working principle of the snubber in depth, an accurate simulation model was developed in Simulink based on an improved parallelogram hysteresis model generated...
Due to its working modes, the Switching Mode Power Supply (SMPS) has low electromagnetic compatibility with other systems, such as Langmuir probes used in ion-source accelerators for heating plasma. Its high-frequency Electromagnetic Interference (EMI) is analyzed for its bias power suppl y of its core snubber. Located in the same HV pole of the accelerator, the EMI of SMPS lets its Langmuir probes...
During the working period of the ion source of a Neutral Beam Injector (NBI) for plasma heating, the temperature of its transmission line inserted in its snubber rises rapidly. This is because the heating current of the filament and arc reaches over 10 kA for over 100 s, which accumulates large amounts of energy on the line. Rapidly ageing of the wire insulation will occur as the temperature rises...
The core snubber is one of the most important devices in the EAST (Experimental Advanced Superconducting Tokamak) with NBI (Neutral Beam Injector) system. This device is designed to protect the NBI system during periods of high voltage breakdown. The theory for the core snubber was developed by Fink, Baker and Owen (the FBO model), who considered only resistance effects which generates a snubber design...
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