Frontiers in Energy
>> 2019,
Volume 13,
Issue 1
doi:
10.1007/s11708-018-0572-0
RESEARCH ARTICLE
Constant temperature control of tundish induction heating power supply for metallurgical manufacturing
National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha 410082, China
Accepted: 2018-07-17
Available online: 2018-07-17
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Abstract
The tundish induction heating power supply (TIHPS) is one of the most important equipment in the continuous casting process for metallurgical manufacturing. Specially, the constant temperature control is greatly significant for metallurgical manufacturing. In terms of the relationship between TIH load temperature and output power of TIHPS, the constant temperature control can be realized by power control. In this paper, a TIHPS structure with three-phase PWM rectifiers and full-bridge cascaded inverter is proposed. Besides, an input harmonic current blocking strategy and a load voltage feedforward control are also proposed to realize constant temperature control. To meet the requirement of the system, controller parameters are designed properly. Experiments are conducted to validate the feasibility and effectiveness of the proposed TIHPS topology and the control methods.
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