Reserach Of Static Var Generater Based On PWM Pulse Width Modulation Technology

The motor and other major perceptual load consumes reactive power. Reactive powers is just a virtual quantity, the perceptual load of power consumed power by itself, making the network voltage and current phase advance or lag each other, sometimes can not reach unity.Based on the above problems analyzed, we compared several reactive power equipment used in near years , and then designed several electronics devices made of a three-phase all control the bridge rectifier circuit of new static reactive compensation devices are adjust to electric voltage and current phase.Combined with pulse width modulation technology and analyzed the realization of the three methods of algorithm pulse square wave, for example, rules sampling, natural sampling, and some areas sampling. According to the defects of the original control system in the control accuracy and real-time tracking of the weak signal, we designed simple and practical surge controller combined with it, make up the deficiency of the original control system. The application of the Matlab/Simulink simulation software simulation analyzed it, from the simulation on observe whether solved the phase problem of this voltage and current signals, and will power factor improvement to the expectation.In addition, on the basis of the theoretical analysis, we designed the corresponding compensation of experimental platform. During the experimental process, the main work was to track and measure the import phase's data of the voltage and current. Through the data obtained to adjust the phase Angle and the phase relationship of voltage and current. The wave after the pulse width modulation is equal to the signal source of network, so, achieved the purpose of improving power factor. In the whole system of circuit, through the reasonable design of some functional circuits and parameters, eventually get the unity of theory and practice, achieved the purpose of the network voltage compensation.This thesis mainly with static reactive power generator for compensation devices, combined with pulse width modulation method to adjust the phase of the voltage and current relations, and finally achieved the purpose of consumed the power compensation in reactive power. In the theoretical analysis, we did the premise of further experiment, and proving theoretical methods were correct.