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Energies 2017, 10(11), 1927; https://doi.org/10.3390/en10111927

Model-Based Predictive Current Control Method with Constant Switching Frequency for Single-Phase Voltage Source Inverters

School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Korea
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Received: 24 October 2017 / Revised: 10 November 2017 / Accepted: 16 November 2017 / Published: 21 November 2017

Abstract

Voltage source inverters operated by predictive control methods generally lead to a variable switching frequency, because predictive control methods generate switching operation based on an optimal voltage state selected at every sampling period. Varying switching frequencies make it difficult to design output filters of voltage source inverters. This paper proposes a predictive control algorithm with a constant switching frequency for the load current control of single-phase voltage source inverters. This method selects two future optimal voltage states used in the subsequent sampling period, which are a zero-voltage state and a future optimal voltage state, based on the slope of the reference current at each sampling period. After selecting the two future voltages, the proposed method distributes them to produce a constant switching frequency and symmetric switching pattern. The performance of the proposed method is validated with both simulation and experimental results for single-phase voltage source inverters. View Full-Text
Keywords: current control; predictive control; constant switching frequency; single-phase voltage source inverter current control; predictive control; constant switching frequency; single-phase voltage source inverter
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Chan, R.; Kwak, S. Model-Based Predictive Current Control Method with Constant Switching Frequency for Single-Phase Voltage Source Inverters. Energies 2017, 10, 1927.

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