The Fully Digital Control System Of The Arc-Suppression Coil With Magnetic Bias

The fully digital control system of the arc-suppression coil with magnetic bias is studied in this theis .Based on the detailed analysis of the various automatic tuning principle of the arc-suppression coil (ASC), a tuning method of the magnetic bias ASC is acquired. According to operating principle of the magnetic bias ASC,the control method of magnetic bias ASC is decided.A new design method of synchronous circuit and trigger circuit is proposed, a digital trigger for three-phase fully-controlled bridge with the ability to following the frequency fluctuation of power network is designed, using a single chip microcomputer 80C196KC and a programmable device for single chip microcomputer PSD913F2 , a digital PID regulater with close-loop magnetic bias current is implemented. According to tuning theory and control method of the magnetic bias ASC, the fully digital controller of the magnetic bias ASC is implemented.