Control Strategy Of Three Phase PWM Rectifier In Ship Power Grid
Published 2016 · Computer Science
In this paper, a brief introduction of ship power grid system has been introduced. In the light of the positive and negative sequence voltage theory, an unbalanced control strategy of three-phase PWM rectifier (VSR) has been adopted for restraining the negative sequence current at the AC side. In the strategy, an algorithm of decomposing the positive and negative sequence voltage has been introduced and employed, and it has been compared with the traditional way of notch filter. It has been indicated that this algorithm can decompose the voltage correctly. A three-phase VSR simulation platform was built with Simulink software, and the correctness of the control strategy has been proved by simulation results.