5SHX14H4510 IGCT可控硅主板

5SHX14H4510  励磁电源装置： 该部分是励磁电源的一部分，为同步发电机的转子绕组提供直流励磁电流。励磁调节器： 根据控制要求的输入信号和给定的调节标准控制励磁电源装置输出的装置。

5SHX14H4510 EXCITATION POWER SUPPLY UNIT: This part is part of the excitation power supply and provides DC excitation current to the rotor windings of the synchronous generator. EXCITATION REGULATOR: A device that controls the output of the excitation power supply unit in accordance with the input signals required for control and the given regulation criteria.

5SHX14H4510    励磁系统还包含自动电压调节器（AVR），它是一种励磁调节器，可根据控制要求和给定的调节标准控制励磁功率单元的输出，它是一种励磁调节器，可根据控制要求和给定的调节标准控制励磁功率单元的输出。励磁功率单元是为同步电机转子绕组提供直流励磁电流的部件。同步发电机转子绕组提供直流励磁电流的部分。

5SHX14H4510  The excitation system also contains an automatic voltage regulator (AVR), which is an excitation regulator that controls the output of the excitation power unit according to control requirements and given regulation criteria. The excitation power unit is a component that provides DC excitation current to the synchronous motor rotor winding. The part that provides DC excitation current to the synchronous generator rotor winding.

5SHX14H4510  在DCB关断过程中，电流从机械开关支路转移至电力电子支路，开关管导通线路短路电流约3~5ms后关断。关断时的温度过高可能导致关断失败，而强开关管的通流能力在通流期间的温度上升较小，关断大电流的可靠性较高。IGCT具有较强的电导调制效应，通态压降远低于IGBT，且不会出现IGBT的退闸现象，在通流期间的温度上升远低于IGBT，因此具有更高的通流能力。

5SHX14H4510  During DCB shutdown, the current is transferred from the mechanical switching branch to the power electronic branch, and the switching tube conducts the line short-circuit current for about 3 to 5 ms before shutting down. The high temperature during turn-off may lead to turn-off failure, while the strong switching tube has a higher reliability of turning off high currents with a smaller temperature rise during turn-off.IGCT has a stronger conductance modulation effect, the on-state voltage drop is much lower than that of IGBT, and the phenomenon of IGBT debounce does not occur, and the temperature rise during turn-off is much lower than that of IGBT, so that it has a much higher turn-off capability.