文档介绍：三相异步电动机调速系统设计(精)
三相异步电动机调速系统设计(精)
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三相异步电动机调速系统设计(精)
Anhui Vocactional & Technical Collegually the rotor current with load determines the size,
三相异步电动机调速系统设计(精)
三相异步电动机调速系统设计(精)
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三相异步电动机调速系统设计(精)
cannot be adjusted; and the rotor loop impedance regulator belonging to the energy dissipation type adjustable speed, a lot of problems, so the rotor side control variables can only be electromotive force. In the
play of wound-rotor asynchronous motor control on the foundation of the advantage, improve speed performance to need from two aspects:
1 from the energy point of view, should be the loss in rotor of additional resistance on energy absorption, energy or converted into other useful feedback to the grid, to enhance the transmission efficiency of the system
2 from the high performance speed requirements are taken into account, the application of control theory, the closed loop speed control system composition, meet the accuracy of speed, dynamic response requirement.
Above all, use of cascade speed regulation system, is to make the winding type asynchronous motor speed and effective measures to realize high performance. With rotor EMF to replace resistor, absorb slip power; double closed-loop control system can improve the static, dynamic performance. This additional electromotive force method will slip power recovery speed is known as a double closed loop cascade speed control.
eywords 】 Energy saving, Double closed-loop, Speed control, Variable pole
目录
摘要 1
Abstract 2
第 1 章三相异步电动机的工作原理及结构 4 三相异步电动机工作原理 4
工作原理 5
第 2 章三相异步电动机调速概述 7
调速概念 7
调速方法 7
调速范围 11
动态速降 11
恢复时间 11
三相异步电动机调速系统设计(精)
三相异步电动机调速系统设计(精)
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三相异步电动机调速系统设计(精)
第 3 章串级调速的基本原理及线路 11 串级调速的基本原理 11
串极调速基本类型 11
串极调速系统的启动方式 14
结论17
致谢18
参考文献 19
第一章三相异步电动机的工作原理及结构
三相异步电动机的结构