Controller design and performance study of DC-DC bidirectional converter for speed regulation of permanent magnet direct current machine
Abstract
This paper presents controller design process of bidirectional DC-DC converter for speed regulation of permanent magnet direct current (PMDC) machine. In recent, this electric drive system is widely used in either electric vehicle or hybrid electric vehicle. Here, the controller design process is necessary in the application for supporting different operations of the machine. The controller design methodology should provide satisfactory dynamic performance under both motor and generation modes of operation of PMDC machine. In this respect, controlling of bidirectional DC-DC converter is necessary. In speed control perspective, condition for absolute stability is derived from small signal model of PMDC drive system. Then, Ziegler-Nichols tuning chart is used for deciding gains of proportional-integral (PI) controller in conventional way. From further investigation, it is noticed that transient performance and stability margin of speed control loop in conventional case is not satisfactory under variable operating conditions. Therefore, transient performance and stability margin for variable PI gains are deeply investigated through step response, root locus and bode plots. As a result, a common PI gains combination is decided for both modes of PMDC’s operation to achieve both significantly improved transient performance and robust stability margin in comparison to conventional case. Various simulation studies using MATLAB-SIMULINK software are performed to validate superiority of proposed gains of PI controller than the gains of conventional approach.
Additional Files
Published
Issue
Section
License
Copyright (c) 2024 Engineering Review
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Engineering review uses the Creative Commons Attribution-NonCommercial-NoDerivatives (CC-BY-NC-ND) 4.0 International License, which governs the use, publishing and distribution of articles by authors, publishers and the wider general public.
The authors are allowed to post a digital file of the published article, or the link to the published article (Enginering Review web page) may be made publicly available on websites or repositories, such as the Author’s personal website, preprint servers, university networks or primary employer’s institutional websites, third party institutional or subject-based repositories, and conference websites that feature presentations by the Author(s) based on the published article, under the condition that the article is posted in its unaltered Engineering Review form, exclusively for non-commercial purposes.
The journal Engineering Review’s publishing procedure is performed in accordance with the publishing ethics statements, defined within the Publishing Ethics Resource Kit. The Ethics statement is available in the document Ethics Policies.
