Single-phase to three-phase system in electric traction is also called as
Single-phase to three-phase system in electric traction is also called as Kando System.
The single-phase to three-phase system is often used in electric traction because it allows for the use of cheaper single-phase distribution networks while still being able to employ efficient and robust three-phase induction motors for traction.
Phase converters and transformers are used to convert the single-phase power to three-phase power at the required voltage and frequency.
Frequency converters may also be used to achieve better speed control and high starting torque with variable supply frequency.