Multiphase induction motor drives have seen significant growth since the beginning of this century, with research and development worldwide. This paper provides a detailed overview of the current state-of-the-art in multiphase induction motor drives, including advantages of multiphase induction machines, modelling, basic vector control, direct torque control, and PWM control of multiphase voltage source inverters. The authors also provide a detailed survey of control strategies for five-phase and asymmetrical six-phase induction motor drives, as well as an overview of fault-tolerant strategies for post-fault operation and discussion of multiphase multi-motor drives with single inverter supply. Experimental results from various multiphase induction motor drive laboratory rigs are included to facilitate understanding of drive operation. Multiphase induction motors have several advantages over three-phase motors, including higher efficiency, greater fault tolerance, and reduced susceptibility to time-harmonic components in the excitation waveform. The number of phases in an induction motor affects the harmonic content of the magnetic field, with more phases leading to higher harmonic orders but lower magnitudes. This results in reduced losses and improved performance. The paper also discusses the impact of phase loss on motor performance, showing that strategies for maintaining torque and rotor loss can reduce stator loss. The paper reviews the control of variable-speed multiphase induction motor drives, including vector control and direct torque control (DTC). Modelling of multiphase induction machines is discussed, with a focus on the mathematical representation of the machine and the transformation of phase variables. The paper also discusses the application of vector control in multiphase induction machines, including the use of d-q components and the impact of phase number on control strategies. The paper also discusses direct torque control, including the use of hysteresis controllers and the impact of switching frequency on performance. The paper reviews PWM control of multiphase voltage source inverters, including carrier-based PWM schemes and the impact of zero-sequence harmonic injection on DC bus utilisation. The paper concludes with a discussion of the challenges and opportunities in the development of multiphase induction motor drives, highlighting the potential for improved performance and efficiency in high-power applications.Multiphase induction motor drives have seen significant growth since the beginning of this century, with research and development worldwide. This paper provides a detailed overview of the current state-of-the-art in multiphase induction motor drives, including advantages of multiphase induction machines, modelling, basic vector control, direct torque control, and PWM control of multiphase voltage source inverters. The authors also provide a detailed survey of control strategies for five-phase and asymmetrical six-phase induction motor drives, as well as an overview of fault-tolerant strategies for post-fault operation and discussion of multiphase multi-motor drives with single inverter supply. Experimental results from various multiphase induction motor drive laboratory rigs are included to facilitate understanding of drive operation. Multiphase induction motors have several advantages over three-phase motors, including higher efficiency, greater fault tolerance, and reduced susceptibility to time-harmonic components in the excitation waveform. The number of phases in an induction motor affects the harmonic content of the magnetic field, with more phases leading to higher harmonic orders but lower magnitudes. This results in reduced losses and improved performance. The paper also discusses the impact of phase loss on motor performance, showing that strategies for maintaining torque and rotor loss can reduce stator loss. The paper reviews the control of variable-speed multiphase induction motor drives, including vector control and direct torque control (DTC). Modelling of multiphase induction machines is discussed, with a focus on the mathematical representation of the machine and the transformation of phase variables. The paper also discusses the application of vector control in multiphase induction machines, including the use of d-q components and the impact of phase number on control strategies. The paper also discusses direct torque control, including the use of hysteresis controllers and the impact of switching frequency on performance. The paper reviews PWM control of multiphase voltage source inverters, including carrier-based PWM schemes and the impact of zero-sequence harmonic injection on DC bus utilisation. The paper concludes with a discussion of the challenges and opportunities in the development of multiphase induction motor drives, highlighting the potential for improved performance and efficiency in high-power applications.