Model predictive direct power control of energy storage quasi-Z-source grid-connected inverter

In order to overcome the shortcoming of large switching losses caused by variable switching frequency appears in the conventional finite control set model predictive control (FCS-MPC) algorithm, a model predictive direct power control (MP-DPC) for an energy storage quasi-Z-source inverter (ES-qZSI)...

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Bibliographic Details
Published in:Archives of Electrical Engineering (Online) 2022, Vol.71 (1), p.21-35
Main Authors: Tang, Min'an, Yang, Shangmei, Zhang, Kaiyue, Wang, Qianqian, Liu, Chenggang, Dong, Xuewang
Format: Article
Language:English
Subjects:
Algorithms
constant frequency control
Coordinates
Cost function
Electric potential
Energy storage
energy-stored quasi-z-source inverter
Frequency control
Inverters
model predictive direct power control
Power control
Prediction models
Predictive control
Pulse duration modulation
space vector modulation module
Switching
Voltage
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Summary:In order to overcome the shortcoming of large switching losses caused by variable switching frequency appears in the conventional finite control set model predictive control (FCS-MPC) algorithm, a model predictive direct power control (MP-DPC) for an energy storage quasi-Z-source inverter (ES-qZSI) is proposed. Firstly, the power prediction model of the ES-qZSI is established based on the instantaneous power theory. Then the average voltage vector in the coordinate system is optimized by the power cost function. Finally, the average voltage vector is used as the modulation signal, and the corresponding switching signal with fixed frequency is generated by the shoot-through segment space vector pulse width modulation (SVPWM) technology. The simulation results show that the ES-qZSI realizes six shoot-through actions per control cycle and achieves the constant frequency control of the system, which verifies the correctness of the proposed control strategy.
ISSN:1427-4221
2300-2506
DOI:10.24425/aee.2022.140195