Algorithm‐based direct power control of active front‐end rectifiers. Issue 4 (6th February 2019)

• Record Type: Journal Article
• Authors: Kumar, Amit; Srungavarapu, Gopalakrishna
• Is Part Of: IET power electronics. Volume 12:Issue 4(2019)
• Page Start: 712
• Page End: 718
• Publication Date: 2019-02-06
• Subjects: mathematical analysis -- harmonic distortion -- power supply quality -- power convertors -- reactive power control -- rectifiers; Algorithm‐based direct power control -- active front‐end rectifiers -- widely used techniques -- AFE -- switching states -- power converter -- power quality performance -- load demand -- classical ST‐DPC techniques -- Virtual Flux -- Noguchi's Table -- VF‐NT‐DPC -- VF‐IT‐DPC -- dynamic performance -- reactive powers -- DPC technique experimental work -- A‐DPC -- static switching table -- power quality -- power ripple -- switching table‐based direct power control -- table‐based DPC -- mathematical analysis; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2018.5256
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : Switching Table‐based Direct Power Control (ST‐DPC) is one of the most widely used techniques in Active Front‐End (AFE) rectifiers. Proper control of switching states of the power converter is essential to obtain better power quality performance and quicker response to the load demand. In the classical ST‐DPC techniques such as Virtual Flux with Noguchi's Table‐based DPC (VF‐NT‐DPC) and Virtual Flux with Improved Table‐based DPC (VF‐IT‐DPC) etc., these switching states are decided based on a predefined static switching table. Hence, they have poor power quality and dynamic performance with load variations. In this research work, in‐depth mathematical analysis is carried out based on the quantised values of 'the rate of change of active and reactive powers' and an algorithm is introduced for AFEs. Since, the proposed algorithm is considering the quantised values of 'the rate of change of active and reactive powers', which is dynamic in nature; therefore, it has reduced THD, lesser power ripple, and quicker response than classical ST‐DPC techniques. To show the superiority of the Algorithm based DPC (A‐DPC) technique experimental work is carried out and the power quality performance of the proposed A‐DPC is compared with conventional ST‐DPC techniques VF‐NT‐DPC and VF‐IT‐DPC.