期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2013
卷号：3
期号：2
页码：124-127
出版社：International Journal of Soft Computing & Engineering
摘要：Direct Power Control (DPC) of three phase PWM rectifiers without line voltage sensors and based on Virtual flux estimation is presented. In this paper, the compensation of neighboring nonlinear power load is proposed. The active filtering function enlarges the functionality of PWM rectifiers, which decreases the cost of additional installation of compensating equipment. It gives a chance to fulfill both shunt active power filter and PWM rectifier tasks in a multimotor drive system by one advanced PWM rectifier. The Direct Power Control Space Vector modulated (DPC-SVM) and new Synchronous Double Reference Frame Phase locked Loop (SDRF-PLL) approach, made the control system resistant to a majority of line voltage disturbances and also it allow a constant switching frequency of the converters, leading to least switching losses. This assures proper operation of the system for abnormal and failure grid conditions. Simulation results have proven excellent performance and verify the validity of the proposed system.
关键词：Active filtering function; Direct Power Control;SDRF; Space vector modulation.
