【摘要】 本文提出励磁电流可自动控制的他励式双高调速系统设计方案。系统在提升特别是在下放重物时，具有较硬的机械特性；在负载１０％～１００％的变化范围内，可实现最大偏差１００％≤１０％，调速范围Ｄ≥１０；在满载运行条件下，可节约电能８０％以上。更多还原

【Abstract】 A design scheme of a separate-excited speed control system with double high performances is presented in the paper. This system has a harder external characteristic at hoisting heavy duty especially at unloading. Within 10% ￣ 100% load variation, the ratio of the max speed deviation to the min speed, which is 100% is≤10%,and the speed regulation range D is≥10. It can save over 80% power consumption at full aoad.更多还原