Optimal Sliding Mode Preview Repetitive Control for Three-Phase Z-Source Inverters

Aiming at high output voltage and obvious current fluctuation of the off grids inverters with unbalanced and nonlinear loads, a compound control strategy of sliding mode controller and optimal preview controller based on Z-source inverter (ZSI) is proposed. ZSI can boost the pressure and improve the...

Full description

Saved in:
Bibliographic Details
Published in:Mathematical problems in engineering 2022-09, Vol.2022, p.1-12
Main Authors: Yan, Jian-De, Peng, Fan, Xie, Wei-Cai
Format: Article
Language:English
Subjects:
Alternative energy sources
Compensation
Control systems design
Controllers
Discrete systems
Energy conversion
Feedforward control
Finite differences
Inverters
Linear matrix inequalities
Linear quadratic regulator
Nonlinear control
Operators (mathematics)
Optimal control
Power supply
Preview control
Repetitive control
Repetitive controllers
Sliding mode control
State feedback
Systems stability
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Aiming at high output voltage and obvious current fluctuation of the off grids inverters with unbalanced and nonlinear loads, a compound control strategy of sliding mode controller and optimal preview controller based on Z-source inverter (ZSI) is proposed. ZSI can boost the pressure and improve the system energy conversion rate through by combining the state with the linear quadratic design method of optimal control. The preview controller is introduced in the feedforward compensation link. With the help of difference operator, an extended state error system covering the target value signal and lag link feedback is designed. The optimal preview repetitive control (PRC) is transformed into a linear quadratic regulation matter of the discrete systems. Furthermore, a preview repetitive controller is obtained by using the Lyapunov method, linear matrix inequality, and the design method of optimal controller, which can realize sliding mode control, state feedback, repetitive control, and preview compensation. Finally, a 10 kV A prototype is built to verify the effectiveness of the proposed strategy.
ISSN:1024-123X
1563-5147
DOI:10.1155/2022/9660028