Running a Three Phase AC Induction Motor on Single Phase Supply Source Voltage

In some strange occurrences, you may sometimes end up in certain emergency cases where you are caught unexpectedly in urgent situations that would demand immediate action. One of such unexpected situation in the field of industrial technology is the absence of three phase power source to supply a three phase motor, where the only available means is the most commonly found single phase power supply voltage.

Why does a 3 phase AC induction motor have to be connected in star delta (or wye delta) configuration - What is the significance and advantage of using star and delta in motor connection

Three phase AC induction motors are known to have a very high start-up surge current. The most practical approach to reduce the high start-up inrush current is by firstly implementing a star (or wye) configuration to the motor's 6 leads wiring terminal during the start-up run of the motor. When the motor slowly picks up speed and a significant decrease in the amount of current is achieved then the motor's 6 leads wiring terminal is then reconfigured to a delta connection.

Flowchart schematic diagram for the Control Circuit of a Forward Reverse Direct On Line (DOL) Electric Motor Controller - A how to learn skills training guide for electric motor controller

To help facilitate for a better understanding and further learning and training on the concept of the reversible Direct On Line (DOL) control circuit (ckt) covered in our previous article, a flowchart diagram is presented below as a follow up learning guide which shows a schematic representation of the sequence of operation for the starting and stopping and running operation of a reversible DOL electric motor control circuit in order to provide a visual aid to help diagrammatically visualize how the control circuit flows.

Flowchart schematic diagram for the Control Circuit of a Forward Reverse Star Delta or Wye Delta Electric Motor Controller - A how to learn skills training guide for electric motor controller

To help facilitate for a better understanding and further learning and training on the concept of the forward reverse star delta (or wye delta) control (ckt) circuit covered in our previous article, a reversible star delta starter control circuit diagram accompanied with a flowchart diagram is presented below as a follow up learning guide which shows a schematic representation of the sequence of operation for the starting and stopping and running operation of a reversible star delta or wye delta electric motor control circuit in order to provide a visual aid to help diagrammatically visualize how the control circuit flows.