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一、问题的提出 众所周知,目前国内的架空索道,除重力式往复索道外,无论单线或双线的循环式架空索道,从动力型式上都可以分作两大类。一类是动力型索道,电动机由电网供电驱动索道的运行;另一类是制动型,电动机按发电机运转,电动机转子转速超过同步转速,处于发电反馈制动状态,向电网反馈电流。而动力型索道又可分为停电后能自动反转和停电后自动停车不会反转的两种。
First, the problem raised As we all know, the current domestic ropeway, in addition to gravity reciprocating ropeway, whether single or double loop cableway, from the power type can be divided into two categories. The other is the braking type. The motor runs according to the generator. The rotor speed of the motor exceeds the synchronous speed, and it is in the regenerative braking state of power generation and feeds back the current to the power grid. The power cableway can be divided into power after the automatic reversal and power failure will not automatically reverse the parking two.