| In the information age of rapid development of science and technology,people’s material and spirit have been rapidly improved.The basis for all this change is electricity.However,how to make full use of the existing electric energy has been a hot issue concerned by the society.In solving this problem,reactive power compensation has become a hot topic nowadays.Reactive power compensation is one of the most core of the power supply system of the project,the purpose of this study is in the computer field,by using computer simulation technology to design a basic active reactive power compensator,and the more higher harmonic produced by the improvements.In this paper,the design of the improved active reactive power compensator is based on the three-phase instantaneous reactive power theory,mainly by the reactive current detection module,current tracking control module,adopts synchronous control the main circuit of PWM signal module and harmonic suppression of the module.The reactive current detection module is used to detect and detect the reactive current component in the compensated object current.The current tracking control module has two functions.First,the command current of compensating current is obtained according to the instantaneous reactive current detected by the reactive current detection module.Secondly,according to the instruction of compensation current and actual compensation current,the relationship among different devices on and off control main circuit module of the PWM control signal,control is to ensure that the result of the compensation current follow the instruction current varies;The main circuit module that adopts synchronous control PWM signal is the most important part of power compensator.It is mainly used to generate actual compensation current according to the control instruction of current tracking control circuit output.The harmonic suppression module mainly involves the high pass filter into the whole circuit to eliminate the high order harmonics generated in the circuit.This experiment based on the basic of the main circuit of the active reactive power compensator adopts synchronous control of PWM control method,and high-pass filter are involved in the improvement of the overall circuit,so that the efficiency of reactive compensation has been further improved.Through the computer simulation experiment results show that the improved active reactive power compensator is good for the higher harmonic filtering,and good for reactive power compensation,the power of power efficiency has been greatly improved. |
