An Adaptive Passivity‐Based Controller of a Buck‐Boost Converter with a Constant Power Load. Issue 1 (24th March 2018)

• Record Type: Journal Article
• Authors: He, Wei; Ortega, Romeo; Machado, Juan E.; Li, Shihua
• Other Names: Karimi Hamid Reza guestEditor.; Wang Yueying guestEditor.; Shi Peng guestEditor.
• Is Part Of: Asian journal of control. Volume 21:Issue 1(2019)
• Page Start: 581
• Page End: 595
• Publication Date: 2018-03-24
• Subjects: Buck‐boost converter -- constant power load -- interconnection and damping assignment passivity based control -- immersion and invariance; Automatic control -- Periodicals; Control theory -- Periodicals; 629.805
• DOI: 10.1002/asjc.1751
• Languages: English
• ISSNs: 1561-8625

Abstract

Abstract: This paper addresses the problem of regulating the output voltage of a DC‐DC buck‐boost converter feeding a constant power load, which is a problem of current practical interest. Designing a stabilising controller is theoretically challenging because its average model is a bilinear second order system that, due to the presence of the constant power load, is non‐minimum phase with respect to both states. Moreover, to design a high‐performance controller, the knowledge of the extracted load power, which is difficult to measure in industrial applications, is required. In this paper, an adaptive interconnection and damping assignment passivity‐based control—that incorporates the immersion and invariance parameter estimator for the load power—is proposed to solve the problem. Some detailed simulations are provided to validate the transient behaviour of the proposed controller and compare it with the performance of a classical PD scheme.