ABSTRACT
Multiphase and dual-inverter drive systems have gained increasing attention in high-performance and high-reliability applications such as electric vehicles, aerospace actuators, and industrial processes. These systems offer advantages including reduced current stress, improved fault tolerance, and enhanced power density. However, their performance is strongly influenced by the modulation strategy used for inverter switching. This paper presents a detailed study of advanced modulation techniques developed for multiphase and dual-inverter systems. Space vector modulation, carrier-based methods, zero-sequence injection, and fault-tolerant modulation strategies are discussed and compared. Performance evaluation in terms of harmonic reduction, DC-link utilization, and fault resilience is presented using reported results. The paper highlights the role of advanced modulation in fully exploiting the benefits of multiphase and dual-inverter architectures.
KEYWORDS: - Multiphase inverters, Dual-inverter systems, Space vector modulation, Harmonic reduction, Fault-tolerant drives, Advanced modulation
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