| Title |
The Parallel Operation of AC to DC PWM Converters for a High Speed Railway Train |
| Authors |
류홍제(Ryu, Hong-Je) ; 우명호(U, Myeong-Ho) ; 김종수(Kim, Jong-Su) ; 임근희(Im, Geun-Hui) ; 원충연(Won, Chung-Yeon) |
| Keywords |
AC/DC PWM Converter ; parallel operation ; high speed railway train ; harmonics |
| Abstract |
This paper deals with the parallel operation of several numbers of PWM converters for a high speed railway train application. Several considerations are made to reduce the transformer interaction which can cause a current control problem in severe case. Also, in this paper, novel control strategy is proposed to achieve a harmonic free primary-side current control under a light load condition using one current sensor independent of the number of converters. In addition, the modified predictive current controller, which is suitable to a digital current controller with a relatively large sampling period, is used. Finally, to verify the system validity, digital control system with TMS320C44 micro-processor and small scale simulator are made and tested. |