【摘要】 本文提出一种利用谐波起动交流电动机的新方法,并提出按该方法起动的绕线转子导步电动机、笼型异步电动机和隐极式同步电动机。用本方法起动时,要改变电机定子绕组联结法而产生很强的谐波磁场,依靠该谐波磁场和特殊设计的转子绕组相配合而改善起动性能。本文提出的三种新型电动机的共同特点是能设计成起动转矩大、起动电流小、可全电压起动的,对于绕线转子异步电动机,由于取消了转子上的电刷、滑环,转子上没有任何电的触点,因而提高了起动和运行的可靠性;对于笼型异步电动机,可提高其运行时的效率和功率因数;对于隐极式同步电动机,可使起动时容易牵入同步,并可取消为起动而装干转子上的阻尼笼。更多还原

【Abstract】 The present paper provides a new method of starting AC motors by harmonics, and three new types of motors started by this method:non-salient-ole synchronous motors,wound-rotor and cage-rotor asynchronous motors started thereby.During the starting period,according to the present paper,the connection of the stator winding of the motor is changed so as to create some very strong harmonic fields,by means of harmonic fields associated with the rotor winding to improve the starting perfor- mance.The characteristics of the three motors which the present paper proposes are of big starting torque,small starting current and can be started by direct-on-line.To the wound-rotor asynchronous motor,brushes,slip rings on the rotor are eliminated and there is not any electric contact whereby to increase the reliability of the starting and running.The running efficiency is also increased to the cage rotor asynchronons motor.To synchronous motors,the merit of them is easy synchronization, and eliminating the damping cage for starting.更多还原