REDUCED SWITCHING LOSS AC/DC/AC CONVERTER WITH FEED FORWARD CONTROL

REDUCED SWITCHING LOSS AC/DC/AC CONVERTER WITH FEED FORWARD CONTROL
Author(s):
Avuluri.Saritha reddy, T.naga durga
Keywords:

Abstract
This paper presents a novel simplified pulse width modulation (PWM) strategy for the bidirectional ac/dc single phase converter in a micro grid system. Then, the operation mechanism of the novel simplified PWM is clearly explained. The number of switching’s of the proposed simplified PWM strategy is one fourth that of the conventional unipolar PWM and bipolar PWM. Based on the novel simplified PWM strategy, a feasible feed forward control scheme is developed to achieve better rectifier mode and inverter mode performance compared with the conventional dual loop control scheme. The proposed simplified PWM strategy with the proposed feed forward control scheme has lower total harmonic distortion than the bipolar PWM and higher efficiency than both unipolar and bipolar PWMs. Furthermore, the proposed simplified PWM operated in the inverter mode also has larger available fundamental output voltage v_ab than both the unipolar and bipolar PWMs.
Article Details
Unique Paper ID: 143933 Publication Volume & Issue: Volume 3, Issue 4 Page(s): 53 - 61
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