204 / 2021-10-31 22:45:25

Harmonic Suppression Strategy Of 12-Pulse Controllable Rectifier

Controllable rectifier,12-pulse rectifier,Harmonic suppression

Power electronics technology and application > Modeling, simulation and control in power electronics

In order to improve the harmonic suppression ability of 12-pulse rectifier, the DC side harmonic suppression strategy of 12 pulse parallel rectifier is studied. A harmonic suppression method is proposed that an active circuit is added on the DC side to improve the input current waveform of the rectifier to meet the harmonic requirements of different load conditions. Firstly, according to the relationship between AC and DC currents of multi pulse rectifier and the ideal current waveform on the DC side, this paper analyzes the working mode of the rectifier, and then determines the output current of the inverter circuit at different times according to the principle of harmonic suppression on the DC side. Finally, the feasibility of this method is verified by simulation. Simulation results show that this method can effectively suppress the harmonic of rectifier input current.