Due to the characteristics of single-phase converter in the high-speed railway electrical drive system, the fluctuation output of traction inverter will have a terrible effect on the motor control performance, which is beat phenomenon. Furthermore, with traditional modulation, low switching frequency leads to more harmonic at the frequency causing most severe beat phenomenon. The paper proposes a compensation strategy to suppress fluctuation component with the specific harmonic elimination modulation. It gains the accurate DC link voltage using the prediction strategy. The feed-forward compensation is used to correct pulse width and then calculate the switching angles of SHEPWM. The simulation results show that the compensation strategy results in remarkable drops in both current harmonic and torque ripple of motor.
Feed-Forward Compensation Strategy for Suppressing Beat Phenomenon in Railway Traction System
Lect. Notes Electrical Eng.
International Conference on Electrical and Information Technologies for Rail Transportation ; 2019 ; Qingdao, China October 25, 2019 - October 27, 2019
Proceedings of the 4th International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2019 ; Chapter : 39 ; 407-416
2020-04-08
10 pages
Article/Chapter (Book)
Electronic Resource
English
Feed-Forward Compensation Strategy for Suppressing Beat Phenomenon in Railway Traction System
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