The Application And Study Of Three-Phase PWM Rectifier Technology In Hybrid Excitation Multi-voltage Output Synchronous Generation System

This paper studies the multi-output voltage generator system. Contraposing the effect of the DC and AC Load towards generator and the speciality of high quality DC output, combining the advantages and disadvantages of different rectification circuits, this paper puts forward the idea of three-phase PWM rectifier applies to multi-output generator system. It systematically discusses the basic principles, modelling, calculation of the main circuit parameters and the design of the control system, and results in the system simulation.On the base of analyzing and contrasting to the control strategy of multi-output generator system, this paper proposes SVPWM control mode's voltage orientation control strategy apply to the system, and analyses and studies the SVPWM modulation thoroughly. With the request of rectifier in the system, the paper puts forward using the space vector modulation algorithm, which is voltaic feed-forward decoupling control and easily digital realized, to reduce the harmonic content of rectifier AC side, minish the ripple voltage of DC side, and improve the performance of dynamic response.Simulation mode is gained by making use of a Matlab named simulation. Through the simulation, a number of simulation data are obtained for studying the relationship between the circuit parameters, controls parameters and the capability of the system. The simulation result indicates that the rectifier has a favorable steady state and dynamic response, validates the correctness of circuit simulation and theoretical analysis, and provides a good foundation for the practical engineering application.