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| | Based upon the design and calculations involved in the joint research on experimental superconducting synchronous machines at Shanghai Electric Machinery Works,an analysis of the magnetic field of super- conducting synchronous machines is introduced in this paper. In consideration of the special features of the coustruction of steam turbo-generators,the 3—dimensional magnetic field is simplified to a 2—dimensional problem.The paper then proceeds on the theoretical analysis of the exciting magnetic field and... | | 根据在上海电机厂参加协作研制试验性超导汽轮发电机时所作的实际设计计算工作(并已经过制成电机的试验验证),对超导同步电机的磁场分析作一介绍。从汽轮发电机的实际结构情况出发,把超导同步电机中的三维空间磁场简化为二维场问题来解。分别对电机的励磁磁场和电枢磁场进行了理论分析,从而得出可供设计计算这种新型电机时应用的磁场计算公式。 | | 文摘来源 | | A. C. machines presently designed to operate from a solid state power converter retain a sinusoidal winding distribution even though such machines were originally intended only for operation with sinusoidal rather than rectangular power supplies. This paper describes a unique type of concentrated winding machine in which the winding distribution is intentionally rectangular to better accomodate the rectangular waveforms of conventional six pulse converters. Equations which define steady state are derived an... | | 目前用于交流调速驱动的电机,仍然采用传统的正弦绕组分布,而这些电机在设计时是按正弦波交流电源考虑的。本文描述了一种独特的集中式绕组电机,它的绕组磁势不是正弦而是矩形分布,以更加适合于传统六脉冲换流器矩形波电源的要求。文中推导了电机方程及参数计算公式,给出了样机参数和特性的计算值与实测值的比较。文章对该种新型电机发电机运行方式的稳态特性以及最佳运行条件作了详细的分析,同时对电动机运行方式也进行了研究。 | | 文摘来源 | | This paper discusses the configuration and operating principles of a novel Rare-Earth Permanent Magnet (REPM) brushless DC generator which achieves the optimum combination of square waveform REPM AC generator and boost type power converter. It also studies in detail the performamce characteristics of this system;the relationship among output volt-age U0 ,duty cycle Dy ,AC input current It and machine speed n ;the DC output ripple △U0, input current ripple △Ii , load connection characteristics and efficiency... | | 本文讨论了一种新型永磁无刷直流发电机的构成和工作原理,并指出稀土永磁方波电机与工作于方波方式的升压型功率变换器协调工作,是实现最佳配合的一种新方案.文中还详细分析了该电机的特性:输出电压U_0、导通比D_y、输入电流I_i与转速n的关系;输出电压的脉动△u_0、输入电流的脉动△I_i、外特性和效率。样机实验表明,分析是正确的。 电力电子器件的发展,将日益显示这种新型电机的生命力。我国稀土资源丰富,发展稀土电机有广阔的前景,稀土电机的发展与电力电子变换器的发展关系十分密切.本文就是从两者的结合方面进行分析讨论的。为机电一体化电机的开发和设计提供了理论和技术基础。 | | 文摘来源 | |   | | << 更多相关文摘 |
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