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首页> 外文会议>Annual IEEE International Systems Conference >System of Systems Strand Tilt Analysis Perspective on MediuMHigh Voltage Stator Bar and a Non-Destructive Testing Case Study
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System of Systems Strand Tilt Analysis Perspective on MediuMHigh Voltage Stator Bar and a Non-Destructive Testing Case Study

机译：基于MediMM高压定子棒的系统线倾角分析系统和无损测试案例研究

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Stator copper bar is usually divided into several thin uniform strands, insulated from each other. This is done to reduce additional induced voltage due to convergence of magnetic flux from winding and rotor themselves. Flux density varies radially in density which causes different induced voltage strand to strand. To cancel out unbalanced strand voltage and minimize circulating current and resultant heating, strands are usually transposed. Transposition mechanism is fairly common, and is referred as roebelling. Manufacturing an ideal transposition is a difficult process. There is almost always some associated manufacturing defects present. Untreated issues like strand tilt leads to less utilization of material (less efficiency) & also issues like partial discharge leads to heating due to voids in the insulation. Nonconformance cost incur during the operation, if issues are not corrected. Paper presents the analysis with SoS (System of Systems) approach. In a better performing system (in this case electrical generator), each of the systems (strand, roebel coil and each phase winding) should collectively work to achieve the target of overall system (i.e. more efficient generator system). There are some other issues which arises due to the strand misalignment, e.g. void in the insulation, partial discharge and slot induced eddy voltage change and are discussed in the paper. Paper presents how important is it for system to work in coordination with other systems in order for the overall system to work efficiently. Paper also presents the complexity in evaluating strand tilt during stator coil manufacturing process. A unique solution of non-destructive testing to detect strand tilt is presented which provided excellent result. This is helpful to evaluate, how off the strand is tilted at any particular location on the generator coil.
机译：定子铜排通常分为几根均匀的细线，彼此绝缘。这样做是为了减少由于来自绕组和转子本身的磁通量会聚而产生的附加感应电压。磁通密度的密度沿径向变化，从而导致不同的感应电压线束。为了消除不平衡的线束电压并最大程度地减少循环电流和由此产生的热量，通常会对线束进行换位。换位机制相当普遍，被称为抢劫。制造理想的换位是一个困难的过程。几乎总是存在一些相关的制造缺陷。未处理的问题（例如绞线倾斜）会导致材料利用率降低（效率降低），还会出现部分放电（由于绝缘体中的空隙而导致发热）的问题。如果问题未得到纠正，则在操作过程中会产生不符合项的成本。本文介绍了使用SoS（系统的系统）方法进行的分析。在性能更好的系统（在这种情况下为发电机）中，每个系统（绞线，罗贝尔线圈和每个相绕组）应共同工作以实现整个系统（即更高效的发电机系统）的目标。由于股线未对准，还会产生其他一些问题，例如绝缘中的空隙，局部放电和缝隙引起的涡流电压变化将在本文中进行讨论。论文提出了系统与其他系统协同工作以使整个系统有效工作的重要性。论文还提出了在定子线圈制造过程中评估钢绞线倾斜度的复杂性。提出了一种独特的无损检测解决方案来检测钢绞线倾斜，从而提供了出色的结果。这有助于评估线束在发电机线圈上任何特定位置的倾斜角度。

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