Study on one-cycle control of active power filter for the electrified railway system

Compensating current control is the key tache to accomplish the various functions of active power filter.In the text,a single phase active power filter is proposed based on suppressing the electrified railway system harmonic current.One-cycle control of double-direction compensating control scheme have a great impact on the performance of it.And simulative model is established based on one-cycle control of double-direction compensating control schem.The simulative result shows that the current control schem above can be used in the electrified railway system to control harmonic current and filter a majority of the electric locomotive harmonic current and lower THD of the source current.