Use of Model Predictive Controller in Dual-Loop Control of Three-Phase PWM AC/DC Converter
- Authors
- Kim, Seok-Kyoon; Son, Sung-Yong; Lee, Young Il
- Issue Date
- Apr-2014
- Publisher
- INST CONTROL ROBOTICS & SYSTEMS, KOREAN INST ELECTRICAL ENGINEERS
- Keywords
- AC/DC converter; current control; dual-loop control; input constraints; MPC
- Citation
- INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS, v.12, no.2, pp.340 - 348
- Journal Title
- INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
- Volume
- 12
- Number
- 2
- Start Page
- 340
- End Page
- 348
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12735
- DOI
- 10.1007/s12555-013-0278-3
- ISSN
- 1598-6446
- Abstract
- In the classical dual-loop voltage control scheme for an AC/DC converter, this paper proposes a simple stabilizing inner-loop model predictive controller (MPC) to regulate the output current and q-frame current to their references. The proposed MPC minimizes a cost function of the tracking error without any use of numerical methods using the specific property of the input matrix of the converter. It is shown that this MPC globally stabilizes the converter in the presence of input constraints. As the same manner of the classical dual-loop control scheme, PI controllers are adopted in the outer-loop to regulate the output voltage while maintaining the maximum power factor. The simulation results show that the proposed inner-loop MPC considerably enhances the closed-loop performance despite the load changes.
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