A New Model of Fault-Tolerant Predictive Current Control of Multilevel Cascaded H-Bridge Inverters for Induction Motors
Received: 17 April 2024 | Revised: 7 May 2024 | Accepted: 10 May 2024 | Online: 7 June 2024
Corresponding author: Vo Thanh Ha
Abstract
This study proposes a fault-tolerant method for controlling multilevel inverters using predictive control strategies to tackle semiconductor valve open circuit problems, making a substantial step towards ensuring smooth functionality and sustained performance. The proactive error detection mechanism, based on analyzing differences between the output voltage and the H-bridge control signals, offers a sophisticated approach to fault management. With an advanced SVM voltage modulation algorithm, the system efficiently handles potential faults by optimizing switching combinations to achieve standard voltage vectors. This method ensures maximum output voltage and maintains balanced operation across three phases, resulting in an optimal operational state. The viability and effectiveness of the proposed solution are conclusively established through a comprehensive analysis and rigorous testing. MATLAB simulations confirmed the integrity of the proposed method, demonstrating its ability to accurately address current, torque, and speed requirements. The findings highlight the competence of multilevel inverters in practice, presenting them as user-friendly, secure, and capable of meeting diverse quality standards.
Keywords:
MPC, IM, FOC, SVM, cascaded H-bridgeDownloads
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