Design, implementation and performance evaluation of different digital control techniques for current controlled DC-DC Buck converter. (21st November 2022)

• Record Type: Journal Article
• Authors: Vachhani, Dipen M.; Arya, Rajesh; Bhatt, Uma Rathore
• Is Part Of: International journal of power electronics. Volume 17:Number 1(2023)
• Page Start: 97
• Page End: 128
• Publication Date: 2022-11-21
• Subjects: digital control techniques -- digital voltage mode control -- digital average current mode control -- digital peak current mode control -- current controlled DC-DC Buck converter -- continuous conduction mode -- digital redesign -- digital compensators -- type-2 compensator -- 2p2z compensator; Power electronics -- Periodicals; 621.31705
• Languages: English
• ISSNs: 1756-638X

Abstract

The paper presents modelling, control architecture, analysis and design of digital compensators for single feedback-loop voltage mode control as well as two feedback-loop average current mode control and peak current mode control of current controlled DC-DC Buck converter operating in continuous conduction mode with output current as control variable. The compensators are derived using digital redesign approach, simulated on MATLAB, implemented as control algorithms on Texas Instruments' 32-bit TMS320F28069M microcontroller platform, and experimentally validated by testing with a laboratory prototype of current controlled Buck converter. Simulation and experimental results are discussed, compared and evaluated for converter output current performance in tracking reference current signal as well as in regulation against input voltage and load disturbances. Salient features of each control technique are identified and described to determine its suitability in applications of DC-DC converters requiring controlled output current.