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Developing electric drive with adaptive algorithm for soft switching between frequency converter and three-phase mains

机译:使用自适应算法开发电驱动器,以实现变频器和三相主电源之间的软切换

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The paper presents a new approach for induction motor (IM) soft switching from frequency converter (FC) to mains and vice versa. Industrial companies' and municipal services' proper operating require numerous complex systems interconnection and cooperation the structure of which depends on the company's type. The frequency control station (FCS) is one of the abovementioned systems. The FCS application for industrial unit group control is usually a technically and economically reasonable solution. Despite all the advantages, the solution provides a dangerous mode which could appear while operating. The article deals with AC electric drive transient at supply voltage loss. The reason for particular attention paid to the voltage loss's processes stands for its connection with FCS operating. The paper conducts detailed investigation of the IM switching processes between FC and mains. Besides, it considers the probable risk estimation. The technique proposed in the article intends to eliminate probable emergency operation while switching. The authors suggest soft switching technique, its schematic circuit implementation and a closed-loop control system designing and calculation. Schematic circuit components' selection guideline is also proposed.
机译:本文提出了一种新的方法,用于感应电动机(IM)从变频器(FC)切换到市电,反之亦然。工业公司和市政服务的正常运行需要大量复杂的系统互连和协作,其结构取决于公司的类型。频率控制站(FCS)是上述系统之一。 FCS在工业单位组控制中的应用通常是技术上和经济上合理的解决方案。尽管具有所有优点,该解决方案仍提供了一种危险模式,该模式可能在运行时出现。本文讨论了电源电压损失时的交流电驱动瞬变。之所以要特别注意电压损失的过程,是因为它与FCS操作有关。本文对FC与电源之间的IM切换过程进行了详细的研究。此外,它还考虑了可能的风险估计。本文中提出的技术旨在消除切换时可能发生的紧急操作。作者提出了软开关技术,其原理图电路实现以及闭环控制系统的设计和计算。还提出了原理图电路元件的选择指南。

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