硅堆具有整流效率高,耗电少,体积小,机械性能好,寿命长等优点。所以,目前矿井电气设备中广泛应用着硅堆作为整流元件或构成三相电路的人为中性点。下面谈一点硅堆在使用中的几点体会。 (1)在煤矿电气没备中硅堆是在工频电源状态下工作的,因此,应选用工频电压硅堆。这种硅堆要求正向压降低,反向击穿电压高,反向漏电流小,至于整流效率不必多考虑。假若选用高频硅堆用于工频电气设备中,其价格要高出2～3倍,相当不经济。 (2)为了提高硅堆在煤矿电气设备中使用的安全性、可靠性,在安装时应注意尽量远离主线路等发热元件。同时,硅堆要水平放置,因为竖直放置会使其功率容量减小。 (3)使用硅堆时,还要避免使硅堆对地有过大的 Silicon heap rectifier with high efficiency, low power consumption, small size, good mechanical properties, long life and other advantages. Therefore, the current mine electrical equipment is widely used silicon rectifier as a rectifier or three-phase circuit composed of artificial neutral point. Here to talk about some experience in the use of silicon heap. (1) In the mine electrical equipment is not prepared silicon reactor power frequency power state work, therefore, should be selected frequency voltage silicon reactor. This silicon reactor requires low forward voltage drop, reverse breakdown voltage high, reverse leakage current is small, as the rectifier efficiency do not have to consider. If the use of high-frequency silicon reactor for power frequency electrical equipment, the price should be 2 to 3 times higher, quite uneconomical. (2) In order to improve the safety and reliability of the silicon reactor used in coal mine electrical equipment, attention should be paid to keep away from the heating elements such as the main line as far as possible during installation. At the same time, the silicon stack should be placed horizontally as the vertical placement will reduce its power capacity. (3) When using silicon heap, but also to avoid the silicon heap to the ground has been too large