Based On The Research And Design Of The Dsp Of Tcr Dynamic Reactive Power Compensation Device Controller

More and more fluctuant load such as electric arc furnaces and welders connect into power networks. Its supply quality become badly. Based on DSP this paper study and design TCR-SVC controller to eliminate the voltage fluctuation and flicker, improve load imbalance state.Based on the compensate admittance model of Steinmetz theory a method is put forward which use instantaneous values of load current and voltage to denote it. The simulations and practical application in the design of SVC model have shown that the proposed method is very effective, accurate, and with fast response performance.Delay angle account precision of TCR dynamic reactive compensation device influences the effect of dynamic reactive compensation directly. In this paper the rational interpolation method is used as the delay angle account method. Compare with the polynomial approach this method is proved to be more accurate by computer simulation and their amount of calculation is equal. A single-phase model and a three-phase of TCR are established by Matlab software. The relations among the delay angle trigger pulse and fundamental current are analyzed.The controller make up of TMS320F2812 DSP chip, detecting circuits include sampling circuit, modulate circuit and phase locked loop and other periphery control and drive circuit. This paper design a low-voltage SVC model and its software and hardware system obtained by welder, which characteristic is similar to the electric arc furnace, and check out its performance.