REN Xinrun, LV Qibing.Research on Three-dimensional Mathematical Model and Control Strategy of Rail Welding Joint Induction Heating Power Supply[J].Electric Welding Machine, 2024, 54(2): 44-51.
REN Xinrun, LV Qibing.Research on Three-dimensional Mathematical Model and Control Strategy of Rail Welding Joint Induction Heating Power Supply[J].Electric Welding Machine, 2024, 54(2): 44-51. DOI: 10.7512/j.issn.1001-2303.2024.02.07.
Research on Three-dimensional Mathematical Model and Control Strategy of Rail Welding Joint Induction Heating Power Supply
In order to improve the performance of welded joints
the rail welding joint must be normalized after welding. Compared with the flame heating normalization method
the induction heating normalization method has the advantages of high degree of automation
stable normalizing quality
good working environment and so on. It is more and more recognized in rail field welding joint normalization. This paper focuses on the analysis of the PFM
PWM
PFM&PWM three AC side power regulation methods
the establishment of the mathematical model of the three control methods
and the use of MATLAB software to carry out three-dimensional visualization analysis of the mathematical model. The results show that the PFM&PWM control method has the advantages of less switching loss and less frequency change during power adjustment compared with the other two control methods. The control strategy of rail welding joint induction heating power supply based on PFM&PWM control method is proposed
and its control track is illustrated by combining with the three-dimensional mathematical model of rail welding joint induction heating power supply; The software and hardware based on TMS320F28335 are designed to realize the control waveform of the control strategy.
关键词
钢轨焊接接头感应加热电源MATLAB三维数学模型PFM&PWM
Keywords
rail welding jointinduction heating power supplyMATLABthree-dimensional mathematical modelPFM & PWM
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