| 1. | Auxiliary exciting winding 辅助励磁绕组 |
| 2. | According to computer calculating , we can obtain the harmonics amplitude of the stator coil of excitation machine 通过计算,可得到励磁绕组中感应电势的各次谐波幅值。 |
| 3. | The winding through which a current is passed to produce the primary source of flux in the machine is called the field winding 电流通过其在电机中产生主磁通的绕组称为励磁绕组。 |
| 4. | Because insulation layers in strands and turns are very thin , they are always be out of consideration when calculating electromagnetic fields 大型水轮发电机励磁绕组匝间绝缘很薄,在以往的场计算中常忽略了它的存在。 |
| 5. | Because insulation layers in strands and turns are very thin , they are always be out of consideration when calculating electromagnetic fields 大型水轮发电机定子绕组股线绝缘和励磁绕组匝间绝缘很薄,在以往的场计算中常忽略了它的存在。 |
| 6. | Before connection upon completion of generator ' s mounting , measured insulation resistance of generator ' s winding , dry out the generator if necessary 发电机安装完毕接线前,测试发电机定子绕组及励磁绕组电机绕组绝缘电阻。如果需要,对电机要进行干燥。 |
| 7. | The study in this thesis will provide reference in improving salient - pole synchronous motors " asynchronous starting capability and designing the control exciting winding scheme 本文所作的研究工作,对凸极同步电动机异步起动的起动性能有所改善和励磁绕组的控制设计方面的研究有一定的指导意义。 |
| 8. | The thesis realizes the control exciting winding method and the best exciting in towards polarity method provided in this thesis with singlechip ( at90s8535 ) and scr hardware . it proves these methods are accurate and available through the control exciting winding test . analyzing the stator current and exciting current test curves on a salient - pole synchronous motor with 2kw - 4 poles , it solves the starting - difficulty of salient - pole synchronous motors , and improves motors " starting capability 通过在一台2kw 、 4极凸极同步电动机上进行异步起动试验和分析试验过程中的励磁绕组电流和定子绕组电流的波形,证明了本文提出的励磁控制线路的正确性和可行性,较好地解决了凸极同步电动机起动难的问题,同时改善了电机的起动性能。 |
| 9. | The system takes both advantages , the former is fast and convenient characteristics of dasylab in building a control and measure system , and the latter is the powerful program function and abundant control button of labwindows / cvi . it can acquire , analysis and save the real - time data in the experiments of the lim and electromagnet meanwhile , it can control the start / stop of the lim . electromagnet and dc motor , as well as it can control the change of the voltage and frequency of the lim . the exciting windings voltage and rotor windings voltage of the dc motor 整个测控系统利用了dasylab组建采集分析系统的简单快捷和labwindows cvi丰富的控件与强大的编程功能,将两者的优点有机的结合起来,可以完成直线电机及电磁铁试验中的数据采集、分析、存储,并且可以控制试验中直线电机、电磁铁、直流电机的启动与停止,对直线电机绕组电压、直线电机绕组电压频率、直流电机励磁绕组电压、直流电机电枢绕组电压、电磁铁绕组电压的大小进行控制。 |
| 10. | In this thesis , the basic operation theory of salient - pole synchronous motors is discussed ( based on the analysis of the electromagnetic relationship among stator winding 、 rotor winding and damper winding , the transitional process of salient - pole synchronous motors ( asynchronous starting , the thesis provids a novel control method and connection of exciting winding during salient - pole synchronous motors ( asynchronous starting 本文论述了凸极同步电动机的基本运行原理,在分析了凸极同步电动机定、转子绕组及阻尼绕组的电磁关系的基础上,研究了凸极同步电动机异步起动的过渡过程,提出了一种新型的凸极同步电动机异步起动过程中励磁绕组控制方法和线路。 |