A comparison of simulation and hardware-in-the-loop alternatives for digital control of power converters
Entity
UAM. Departamento de Tecnología Electrónica y de las ComunicacionesPublisher
IEEEDate
2012Citation
10.1109/TII.2012.2192281
IEEE Transactions on Industrial Informatics 8.3 (2012): 491 - 500
ISSN
1551-3203 (print); 1941-0050 (online)DOI
10.1109/TII.2012.2192281Editor's Version
http://dx.doi.org/10.1109/TII.2012.2192281Subjects
Digital control; Switching converters; Field programmable gate arrays; Debugging; Simulation; Emulation; TelecomunicacionesNote
Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. A. Sánchez, Á. de Castro, J. Garrido, "A Comparison of Simulation and Hardware-in-the- Loop Alternatives for Digital Control of Power Converters", IEEE Transactions on Industrial Informatics, vol. 8, no. 3, pp. 491 - 500, Aug. 2012Rights
© 2012 IEEEAbstract
Debugging digital controllers for power converters can be a problem because there are both digital and analog components. This paper focuses on debugging digital controllers to be implemented in Field Programmable Gate Arrays or Application Specific Integrated Circuits, which are designed in hardware description languages. Four methods are proposed and described. All of them allow simulation, and two methods also allow emulation-synthesizing the model of the converter to run the complete closed-loop system in actual hardware. The first method consists in using a mixed analog and digital simulator. This is the easiest alternative for the designer, but simulation time can be a problem, specially for long simulations like those necessary in power factor correction or when the controller is very complex, for example, with embedded processors. The alternative is to use pure digital models, generating a digital model of the power converter. Three methods are proposed: real type, float type and fixed point models (in the latter case including hand-coded and automatic-coded descriptions). Float and fixed point models are synthesizable, so emulation is possible, achieving speedups over 20 000. The results obtained with each method are presented, highlighting the advantages and disadvantages of each one. Apart from that, an analysis of the necessary resolution in the variables is presented, being the main conclusion that 32-bit floating point is not enough for medium and high switching frequencies.
Files in this item
Google Scholar:Sánchez González, Alberto
-
Castro, Ángel de
-
Garrido Salas, Javier
This item appears in the following Collection(s)
Related items
Showing items related by title, author, creator and subject.