BLOT 发表于 2025-3-30 10:48:19
Three-Phase Induction Machines,nt of the engineering world than Edison, † who had pioneered the first (d-c) system. Even though the advantages of high-voltage power transmission and the need for transformers were known and appreciated, it took another breakthrough, the invention of the . (attributed to Tesla) to turn the tide in favor of a-c.解开 发表于 2025-3-30 13:11:15
Application of Induction Motors,ad torque.) In other words, the motor and its load are settling on that speed at which this condition of . is satisfied. With the aid of a given torque-speed characteristic (like that of Fig. 13-14), the steady-state speed is determined as that speed at which the magnitude of the motor torque equals that of the load torque.进步 发表于 2025-3-30 19:17:53
http://reply.papertrans.cn/31/3057/305679/305679_53.pngjarring 发表于 2025-3-30 23:23:41
Two-Phase Servomotors,ssential purpose is not power conversion per se, but rather the translation of a time-varying . into a corresponding time-varying .. Some examples may help to illustrate the idea to those readers who have not yet studied feedback control systems.调情 发表于 2025-3-31 01:46:57
Single-Phase Motors,-state operation of polyphase generators and motors, the stator and rotor currents produce rotating mmf waves of constant magnitude. Since these waves rotate at constant (synchronous) speed, they maintain a constant torque angle, and thereby a constant torque and constant power.懒惰人民 发表于 2025-3-31 05:47:18
http://reply.papertrans.cn/31/3057/305679/305679_56.pnganachronistic 发表于 2025-3-31 11:52:59
curriculum of many electrical engineering departments. The most obvious is the current public awareness of the "energy crisis. " More fundamental is the concern with social responsibility among college students in general and engineering students in particular. After all, electric power remains one六个才偏离 发表于 2025-3-31 16:45:30
http://reply.papertrans.cn/31/3057/305679/305679_58.png过度 发表于 2025-3-31 19:20:50
http://reply.papertrans.cn/31/3057/305679/305679_59.png失眠症 发表于 2025-4-1 01:12:47
https://doi.org/10.1007/978-3-663-12149-7nt of the engineering world than Edison, † who had pioneered the first (d-c) system. Even though the advantages of high-voltage power transmission and the need for transformers were known and appreciated, it took another breakthrough, the invention of the . (attributed to Tesla) to turn the tide in favor of a-c.