Authors: Mr. Mukesh Kumar and Dr. Umakant Dhar Dwivedi

ISBN: 978-81-995355-4-1

DOI: https://doi.org/10.59646/512

Date of Publication: November 24, 2025

About the Book: 

The rapid evolution of high-performance electric drive systems, driven by increasing demands for reliability, efficiency, fault tolerance, and power density in critical applications, has positioned multiphase induction motor drives as a cornerstone technology in modern power electronics and motion control. This book, Multiphase Induction Motor Drives: Control, Fault Diagnosis, and Multilevel Inverter Integration, is conceived to provide a comprehensive, in-depth, and application-oriented treatment of multiphase drive systems, bridging theoretical foundations with advanced control strategies, power converter integration, real-time implementation, and intelligent fault management. Unlike conventional three-phase systems, multiphase induction motors—such as five-phase, six-phase, nine-phase, and dual three-phase configurations—offer superior torque density, reduced current per phase, enhanced fault tolerance, and improved harmonic performance, making them particularly suitable for safety-critical and high-reliability domains including aerospace, electric vehicles, ship propulsion, and renewable energy systems. Beginning with a rigorous exploration of multiphase motor concepts, space vector theory, dimensional decomposition, and mathematical modeling in generalized reference frames, the book systematically builds the analytical framework required to understand electromagnetic behavior, magnetic coupling, and harmonic interactions unique to multiphase machines. It then advances into modern control paradigms, encompassing scalar and vector control, direct torque control, predictive and sensorless techniques, adaptive and robust controllers, field-weakening strategies, and coordinated multi-motor operation, with a strong emphasis on real-time dynamic performance and harmonic compensation. Recognizing the inseparable role of power electronics, the text provides a detailed examination of advanced multilevel inverter topologies—including NPC, flying capacitor, cascaded H-bridge, hybrid structures, and modular multilevel converters—along with sophisticated PWM and space vector modulation techniques aimed at reducing common-mode voltage, total harmonic distortion, and switching losses, while enabling seamless integration with renewable and storage-based DC sources. Practical relevance is further strengthened through dedicated coverage of real-time digital control platforms, DSPs, FPGAs, gate driver design for wide-bandgap devices, sensing technologies, communication protocols, thermal considerations, and hardware-in-the-loop validation, ensuring that readers gain not only conceptual clarity but also implementation competence. A distinguishing feature of this book is its extensive focus on fault diagnosis and fault-tolerant control, addressing electrical, mechanical, and thermal faults through signal processing, model-based methods, observer techniques, and emerging AI/ML-assisted diagnostics, complemented by reconfiguration strategies that enable continued operation under post-fault conditions. Structured across five logically progressive units, enriched with mathematical rigor, simulation insights, hardware perspectives, and real-world case studies, this book is intended to serve as a valuable reference for postgraduate students, researchers, practicing engineers, and industry professionals seeking to design, analyze, and deploy next-generation multiphase induction motor drive systems for intelligent, resilient, and sustainable electrified applications.