Dual Comparison One Cycle Control for Single Phase AC to DC Converters

Vamanan, Nimesh and John, Vinod (2016) Dual Comparison One Cycle Control for Single Phase AC to DC Converters. In: IEEE International Conference on Power Electronics, Drives, and Energy Systems (PEDES), DEC 16-19, 2014, Mumbai, INDIA, pp. 3267-3278.

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Abstract

Resistance emulation using one cycle control (OCC) has been used extensively in single-phase full-bridge boost rectifiers. This paper proposes a new control strategy called dual comparison OCC (DC-OCC), which eliminates the limitations of OCC. The advantages of the proposed control strategy is that it ensures the average current is equal to grid voltage scaled by emulated resistance, in each switching cycle. This eliminates issues such as dc offset due to the peak current comparison in OCC. It also ensures that there is no distortion in current when the converter is lightly loaded. It is analytically shown that the proposed DC-OCC does not have the light load instability concerns of conventional OCC. The proposed method is also shown to achieve unipolar pulse-width modulation without sensing the grid voltage resulting in lower effective switching frequency. The proposed control requires only one additional comparator and additional logical elements for implementation. Detailed simulation and experimental studies are carried to validate the proposed control and the high performance that can be obtained.

Item Type:	Conference Proceedings
Publication:	IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Additional Information:	Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	08 Oct 2016 05:42
Last Modified:	08 Oct 2016 05:42
URI:	http://eprints.iisc.ac.in/id/eprint/54699

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