Title :
Zero voltage fired, transformer coupled thyristor power control applied for temperature control of the tin bath in the float glass process
Author :
Heath, L. ; Blackmond, R.C.
Author_Institution :
AFG Ind., Kingsport, TN, USA
Abstract :
A novel thyristor-based power circuit is described which substitutes zero-voltage fired, time proportioning control, and thus allows fewer transformer taps while causing no degradation of circuit power factor. In addition, harmonic distortion usually associated with phase angle control in this application is also eliminated. A system description outlining power requirements, a comparison of power factor costs, and system design philosophy is provided, along with some operational history and an explanation of the thyristor control.<>
Keywords :
electric heating; glass industry; power control; temperature control; thyristor applications; electric heating; float glass process; harmonic distortion elimination; phase angle control; power factor costs; temperature control; thyristor-based power circuit; time proportioning control; tin bath; zero voltage fired transformer coupled thyristor; Control systems; Costs; Coupling circuits; Degradation; Harmonic distortion; History; Power control; Proportional control; Reactive power; Thyristors;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25195
