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Of aluminum electromagnetic continuous casting and rolling Mechanism and complex electromagnetic field of electrical control

Author: SunQiBing
Tutor: HuangYunSheng
School: Central South University
Course: Control Theory and Control Engineering
Keywords: Electromagnetic continuous casting and rolling Grain refinement SPWM AC - DC - AC variable IGBT SCM Electromagnetic Compatibility
CLC: TG334.9
Type: Master's thesis
Year: 2005
Downloads: 65
Quote: 0
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Abstract


Brought about by the high cost and pollution problems alloying add grain refiner for aluminum twin-roll continuous casting and rolling production process , a process improvement program based on the electromagnetic field . Through the relevant literature data , to establish the idea of this topic frequency longitudinal pulsation and transverse traveling wave composite magnetic field \The subject of the control object is added to the load coil to generate complex electromagnetic field of special electrical parameters . We use control scheme using SPWM AC - DC - AC inverter technology required to achieve load coil VVVF power ( main magnetic field ) ; generated by the microcontroller PWM drive pulse random control the output frequency of the inverter power adjustable ; additional magnetic field DC power required by the controlled Rectifier . This paper first analyzes the status quo of China 's aluminum roll and the relationship between supply and demand , and discusses the electromagnetic field on the mechanism of grain refinement of aluminum casting and rolling parameters requirements, proposed the idea of a special electromagnetic parameters of complex electromagnetic field control . Then SPWM AC - DC - AC variable frequency control scheme and the selection of the basis of the IGBT power module . Then discusses the control part of the microcontroller hardware and software as well as the control system of the electromagnetic compatibility issues its response measures . Finally, the entire work is summarized and prospect . Industrial tests showed the feasibility of the control scheme is worth promoting.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Rolling mill machinery equipment > Rolling automation
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