A Simple Closed-Loop Test Based Control of Boost Converter Using Internal Model Control and Direct Synthesis Approach

• Published in: IEEE journal of emerging and selected topics in power electronics Vol. 10; no. 5; pp. 5531 - 5540
• Main Authors: Jha, Kartikesh Kumar, Anwar, Md Nishat, Shiva, Badini Sai, Verma, Vimlesh
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01-10-2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Boost converter (BC); Circuit design; closed-loop identification; Control systems design; Controllers; Design methodology; direct synthesis (DS) scheme; Integrated circuit modeling; internal model control (IMC); Loop transfer functions; Mathematical models; modeling error; PI controller; Robustness; Stability analysis; Step response; Synthesis; Transfer functions; Transient performance; Vehicle dynamics; Voltage control
• ISSN: 2168-6777; 2168-6785
• DOI: 10.1109/JESTPE.2022.3157515

In this article, a simple controller design method for output voltage control of dc-dc boost converter (BC) has been proposed. A simple closed-loop step test with proportional gain <inline-formula> <tex-math notation="LaTeX">k_{0} </tex-math></inline-formula> is performed. BC open-loop transfer function is obtained from the closed-loop step response test data, which does not require information of BC circuit parameters. Furthermore, the controller is designed from the open-loop model of the BC through the internal model control (IMC) scheme and direct synthesis (DS) approach. The robust stability analysis of both the control schemes has been carried out. The proposed modeling technique and controller design methods have been validated in the experimental setup. Both the controller design techniques work satisfactorily. Superior transient performance of the IMC scheme in comparison to the DS scheme has been observed.