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Title: Predictive Current Control for Multilevel Cascaded H-Bridge Inverters Based on a Deadbeat Solution
Authors: Qi, Chen
Tu, Pengfei
Wang, Peng
Zagrodnik, Michael
Keywords: Computational burden
Deadbeat solution
Issue Date: 2017
Source: Qi, C., Tu, P., Wang, P., & Zagrodnik, M. (2017). Predictive Current Control for Multilevel Cascaded H-Bridge Inverters Based on a Deadbeat Solution. Journal of Power Electronics, 17(1), 76-87.
Series/Report no.: Journal of Power Electronics
Abstract: Finite-set predictive current control (FS-PCC) is advantageous for power converters due to its high dynamic performance and has received increasing interest in multilevel inverters. Among multilevel inverter topologies, the cascaded H-bridge (CHB) inverter is popular and mature in the industry. However, a main drawback of FS-PCC is its large computational burden, especially for the application of CHB inverters. In this paper, an FS-PCC method based on a deadbeat solution for three-phase zero-common-mode-voltage CHB inverters is proposed. In the proposed method, an inverse model of the load is utilized to calculate the reference voltage based on the reference current. In addition, a cost function is directly expressed in the terms of the voltage errors. An optimal control actuation is selected by minimizing the cost function. In the proposed method, only three instead of all of the control actuations are used for the calculations in one sampling period. This leads to a significant reduction in computations. The proposed method is tested on a three-phase 5-level CHB inverter. Simulation and experimental results show a very similar and comparable control performance from the proposed method compared with the traditional FS-PCC method which evaluates the cost function for all of the control actuations.
ISSN: 1598-2092
DOI: 10.6113/JPE.2017.17.1.76
Rights: © 2017 Korean Institute of Power Electronics (KIPE). This paper was published in Journal of Power Electronics and is made available as an electronic reprint (preprint) with permission of Korean Institute of Power Electronics (KIPE). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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