TY - THES

T1 - PC-based acquisition system for voltages and currents of a vacuum induction furnace

AU - Li, Xiaodong

N1 - embargoed until null

PY - 2009

Y1 - 2009

N2 - Nowadays, the vacuum inductive furnace is one of the most important and frequently used units for melting in metal industry. The Böhler-Metalltechnik company also uses the inductive furnace as a main unit of production process for special quality high alloy steels. A continuous supervision of production can be accomplished by monitoring decisive electrical power quantities, certain interactions of the load especially during the melting process. Also transient conditions at the grid influence operation of the inductive furnace. The task of this master thesis is to realize a computer based measurement system for continuously measuring and storing the voltages and currents of the inductive furnace. In this measurement system, sensors for voltages and currents are chosen and installed, sensor supplies are established, and analog signal transmission and scaling of signals are accomplished. Finally, by means of special measurement software DEWESOFT 6.3, measuring signals from the furnace unit are stored in external hard disks. These data in the hard disks can be analyzed in detail afterwards in order to evaluate operation and transient conditions.

AB - Nowadays, the vacuum inductive furnace is one of the most important and frequently used units for melting in metal industry. The Böhler-Metalltechnik company also uses the inductive furnace as a main unit of production process for special quality high alloy steels. A continuous supervision of production can be accomplished by monitoring decisive electrical power quantities, certain interactions of the load especially during the melting process. Also transient conditions at the grid influence operation of the inductive furnace. The task of this master thesis is to realize a computer based measurement system for continuously measuring and storing the voltages and currents of the inductive furnace. In this measurement system, sensors for voltages and currents are chosen and installed, sensor supplies are established, and analog signal transmission and scaling of signals are accomplished. Finally, by means of special measurement software DEWESOFT 6.3, measuring signals from the furnace unit are stored in external hard disks. These data in the hard disks can be analyzed in detail afterwards in order to evaluate operation and transient conditions.

KW - Vakuum-Induktionsofen Messung kritische Zustände Differenzverstärker Signalauskopplung Signalauswertung

KW - vacuum induction furnace measurement critical situation difference amplifier signal extraction signal analysis

M3 - Master's Thesis

ER -