A Novel Direct Power Control of 3phase Induction Multi Motor Drive with AFF
S. Elangovan1, K. Thanushkodi2

1S. Elangovan, Dept. of Electrical and Electronics Engineering, Akshaya College of Engineering and Technology, Coimbatore, India.
2Dr.K. Thanushkodi, Director, Akshaya College of Engineering and Technology, Coimbatore, India.
Manuscript received on April 05, 2013. | Revised Manuscript received on April 28, 2013. | Manuscript published on May 05, 2013. | PP: 124-127 | Volume-3, Issue-2, May 2013. | Retrieval Number: B1460053213/2013©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: 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.
Keywords: Active filtering function, Direct Power Control, SDRF, Space vector modulation.