| Electrical electron technology has been ordinarily considered as the second electron revolution of human society.Electrical electron technology has been broadly applied to many fields such as industry,traffic,communication,national defence and living.Among them,PWM rectifier with its control technique is one of the hot spots in the electrical electron technology studies.Because PWM rectifier has some merits,for example the power factor is controllable,electric energy can be bidirectional transmission and electric net pollution can be reduced efficiently,and the electro-equipment or grid,connected with other electric equipment making it get broad applications in many fields.This thesis emphasizes particularly on the study and realization of three-phase voltage source type PWM rectifier and its control strategy,It offers a sort of design procedures of comparatively pragmatic controller.The main content of this essay contains:the study of three-phase voltage source type PWM rectifier mathematic model,the design of overall control procedure,the foundation of simulated model and experiment studies.First,simulation model of switch function can be established by relationship of each phase voltage,current and work status of bridge circuit in three-phase voltage source type PWM rectifier.And then,based on dq decoupling control,it establishes current voltage double-closed loop commutation system simulation model,according to the dq0 coordinate alternation theory and direct current control strategy,using Matlab/Simulink tool box.Second,in order to control PWM rectifier's energy which can be bidirectional transmitted,based on the work mode of PWM rectifier,active contravariance control system simulation model based on current tracking control is established.This thesis researches the simulation on grid-side power factor property three-phase voltage source type PWM rectifier and direct current voltage output condition.In addition,considering TMS320LF2407 CMOS chip of TI company as the control core,utilizing function of DSP CMOS chip sufficiently,a suit of Active Inverter control system has been designed,The writer did certain experimental researches on PWM commutate and Active Inverter control technique,analyzed the relationship of inverter between voltage and current,and impacts on feedback grid current by different carrier wave ratio and improvement of feedback grid current by current tracking control.The results of Simulation and experiment show the control system structure is reasonable,and circulate stabilization,theoretical analysis of control strategy is consistent with experiment result.The thesis has a highly degree of diffculty because of its complexity and comprehensiveness.Some technical difficulties and emphases still need further study.
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