Modeling and analysis of power quality problems caused by coreless induction melting furnace connected to distribution network

The development of power electronic devices offers the production of high-power current-source inverter-based coreless induction melting furnaces (CSI-CIMFs) for steel scrap melting process. These high-power CSI-CIMFs introduce many advantages in melting processes for low production rate steel mill and foundries. Besides the advantages of CSI-CIMF, it has unfamiliar time-varying harmonic and interharmonic characteristic. In this paper, operating principle and cause of time-varying harmonic and interharmonic characteristic of CSI-CIMF is clearly presented. The time-varying harmonic and interharmonic characteristic of CSI-CIMF is studied by simulation and field measurements of a real 10 MVA CSI-CIMF. The effect of time-varying harmonics and interharmonics of CSI-CIMF on power system is presented by harmonic analysis. The simulation model of CSI-CIMF is developed in PSCAD/EMTDC by using nameplate parameters and field measurements of a real 10 MVA CSI-CIMF in a steel mill which is located in Iskenderun, Turkey.

[1]  J. Tapson,et al.  Frequency control of a current-fed inverter for induction heating , 2000, ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543).

[2]  P. Lehn,et al.  Interharmonics: Theory and Modeling , 2007, IEEE Transactions on Power Delivery.

[3]  R. Yacamini,et al.  Power system harmonics. IV. Interharmonics , 1996 .

[4]  M. Junaid,et al.  Voltage waveform distortion measurement caused by the current drawn by modern induction furnaces , 2008, 2008 13th International Conference on Harmonics and Quality of Power.

[5]  Wilsun Xu,et al.  Interharmonic-flicker curves , 2005, IEEE Transactions on Power Delivery.

[6]  Fang Zheng Peng,et al.  High-frequency current-source inverters using SI thyristors for induction heating applications , 1989 .

[7]  J. D. Lavers,et al.  Simple starting scheme for a parallel resonance inverter for induction heating , 1994 .

[8]  R. Yacamini,et al.  Harmonic transfer through converters and HVDC links , 1992 .

[9]  B. Axelrod,et al.  An approximate analysis of a starting process of a current source parallel inverter with a high-Q induction heating load , 1997 .

[10]  Unnikrishnan AK,et al.  Three level STATCOM Based Power Quality Solution for a 4 MW Induction Furnace , 2006, 2006 International Conference on Power Electronic, Drives and Energy Systems.

[11]  Praveen Jain,et al.  A comparison of load commutated inverter systems for induction heating and melting applications , 1991 .

[12]  S. L. Semiatin,et al.  Elements of Induction Heating: Design Control and Applications , 1988 .

[13]  Ilker Yilmaz,et al.  Medium-Frequency Induction Melting Furnace as a Load on the Power System , 2011, IEEE Transactions on Industry Applications.

[14]  Ilker Yilmaz,et al.  Field-Data-Based Modeling of Medium-Frequency Induction Melting Furnaces for Power Quality Studies , 2011, IEEE Transactions on Industry Applications.

[15]  Inmaculada Zamora,et al.  Harmonic Distortion in an Steel Plant with Induction Furnaces , 2003 .

[16]  Ozgul Salor,et al.  Mobile monitoring system to take nationwide PQ measurements on electricity transmission systems , 2009 .

[17]  S. Kittiratsatcha,et al.  Switching Frequency Control based on Phase-locked Loop for a Current-fed Parallel Resonant Inverter , 2007, 2007 Power Conversion Conference - Nagoya.

[18]  L. Smith,et al.  Electric metal melting-a review , 1988 .

[19]  R. C. Dugan,et al.  Impact of induction furnace interharmonics on distribution systems , 1999, 1999 IEEE Transmission and Distribution Conference (Cat. No. 99CH36333).

[20]  S.M. Halpin,et al.  Comparison of IEEE and IEC harmonic standards , 2005, IEEE Power Engineering Society General Meeting, 2005.

[21]  Robert L. Boylestad.  Introductory Circuit Analysis , 1990 .