In view of the stability unmanned aerial vehicle (UAV) power system, this paper found that voltage spike generated by IGBT mainly occurs when is turned off in study system interior and drive overvoltage protection, an excessive will lead to damage. To eliminate serious threat safe operation circuit, protection circuit combining dynamic feedback active clamping proposed. method, circuits are ope...

With the application of the articulated phase insulator, and the speed of electric locomotive rising, it is inevitable for the electric locomotive to adopt the technology automatic passing through the electric phase separation. However, when the locomotive passes the electric phase separation, a variety of overvoltages will be generated, such as the cut-off overvoltage and the closing overvolta...

Frequent Switching of arc furnace in steel company causes a great effect on the insulation of arc furnace transformer winding which in turn may causes a shutdown of production for long periods of time. Therefore, it is necessary to study and analyze the causes of these outages and design an adequate protective device. In this paper the transient overvoltage resulted from vacuum circuit breaker ...

Abstract As voltage measuring devices are widely used in the high power system with a primary‐secondary‐fusion structure, electronic transformers directly connected to primary conductor and would face much more serious electromagnetic environments than general secondary equipment. result, they still experience failures even when protection measures adopted suppress overvoltages' amplitudes. To ...

The inductor-based and capacitor-free bipolar pulse converter can be applied to electric vehicle charging realize an efficient reliable charging-control strategy. Inductor-based converters avoid the failure caused by of energy storage capacitors improve reliability. An overvoltage protection scheme based on active clamping topology is used protect this when load impedance too large. This take e...