论文部分内容阅读
为适应水头变比较大电站的要求，潘家口电机采用两种转速，即１２５ｒ／ｍｉｎ和１４２．９ｒ／ｍｉｎ运行。定子采用两套绕组。１２５ｒ／ｍｉｎ电机作为发电机运行用一套绕组。定子绕组采用借槽方法，来消弱转子磁场中与主波相邻的两个谐波中磁密幅值较高的那次谐波，以满足电压波形畸变率的要求，同时也避免接近于两倍电网频率谐波磁势所引起的铁心振动和噪声。１４２．９ｒ／ｍｉｎ电机作为电动机运行用另一套绕组。定于绕组采用借槽方法，为了降低与生波相邻的两个反向波中次数较低的那次谐波的磁势幅值。以达到消弱机组振动和噪声源的目的。
In order to meet the requirements of larger power stations, Panjiakou motor uses two speeds, that is, 125r / min and 142.9r / min operation. Stator with two sets of windings. 125r / min The motor runs as a set of windings for the generator. Stator windings by slot method to weaken the rotor magnetic field and the main wave adjacent to two harmonics in the magnetic flux density higher harmonic that to meet the voltage waveform distortion rate requirements, but also to avoid close to Twice the grid harmonic magnetic potential caused by the core vibration and noise. 142.9r / min The motor is used as a motor for another winding. Set to be used in the winding by slot method, in order to reduce the two adjacent waves with the wave of the lower frequency of that harmonic magnetic potential amplitude. In order to achieve the purpose of weakening unit vibration and noise source.