Electromagnetic stirring power supply system with bidirectional energy flow and its control strategy

Li, Yan; Luo, An; Xiang, Xinxing; Chen, Yandong; He, Zhixing; Chen, Zhiyong; Zhou, Fayun

doi:10.23919/epe17ecceeurope.2017.8099050

Cited by 1 publication

(2 citation statements)

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“…At the same time, it can improve the quality of the product while increasing the output [1][2][3][4][5]. The power supply is the key equipment of electromagnetic stirring, and its current waveform quality and response speed directly affect the quality of continuously cast steel [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…The electromagnetic stirring power supply for steel continuous casting generally adopts a two-phase quadrature inverter power supply, which outputs two-phase quadra-ture current to supply for the induction coil, which stimulates the formation of electromagnetic thrust, thereby causing the molten steel to rotate [6][7][8]. In the traditional topological structure of the two-phase inverter power supply, the front and rear two-stage structure of the front-stage rectifier, the back-stage inverter is generally adopted.…”

Section: Introductionmentioning

confidence: 99%

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Research on the High Reliable Electromagnetic Stirring Power Supply

Xiang

Luo

et al. 2021

Applied Sciences

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A reconstructed topology with fault diagnosis and fault-tolerant control strategy of the two-phase quadrature power supply of an electromagnetic stirring system are proposed to improve the reliability of the system. First, if the back stage inverter is faulty, the topology will be reconstructed after the diagnosed fault. The reconstructed topology with the fault diagnosis can be applied twice. Additionally, a fault pulse reset method is proposed to form a fault-tolerant control strategy, for which the high-reliability electromagnetic stirring power supply does not need to switch the control algorithm before and after the failure. The reliability of the electromagnetic stirring power supply is improved greatly. Finally, simulations and experiments verify the correctness of the electromagnetic stirring power supply fault diagnosis algorithm, reconstruction topology, and its fault-tolerant control strategy proposed in this paper.

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