The methodical approach to the design and construction of a control system for direct-on-line starting of an induction machine is described in this project. The developed procedures cover the construction of D.O.L stated for lower horse power motors. The prototype of this direct-on-Line starting induction machine was developed using the methodical approach outlined in this project, and its operational tests and results have been quite satisfactory. This project has been designed and built with great care to ensure dependability. As a result, the project aims to reduce economic waste by controlling the operation of single phase and three phase motors in industrial drives, companies, homes, laboratories, and hospitals.



Design and construction of a control system for induction machine direct-on-line starting: This is a control system that can control single phase (1 ) and three phase (3 ) motors by utilizing components such as contactors, over current relays, start and stop buttons, and so on. The contactors provide switching devices, while the over current relay is positioned to protect the machines in the event of an over current surge. Push buttons are used to start and stop the control contactor system. Again, there are pivot or indicator lamps that are controlled by normally open and normally closed auxiliary contacts incorporated to indicate when there is voltage supply to the three phase (3), single phase (1), or alternating current (AC) power supply.

Both phases are involved. However, when the circuit breaker is turned on, the entire control system is controlled by mechanically pressing the push button ON and OFF.

The control system requires three phases and one neutral through the input to produce single and three phase at the output terminal.

Finally, the mode of operation is depicted on the control system’s circuit diagram.

Organizational report: Chapter 1 discussed the project’s background, goal, scope, and limitations.

The project’s literature review is discussed and elaborated on in chapter two.

The design methodology (design Analysis, investigation, and data) is discussed in Chapter 3.

Construction, testing, and packaging are all covered in Chapter 4.

Bill of Rights is discussed in Chapter 5.

BEME stands for engineering measurement and evaluation.

This is where the summary, conclusion and recommendation, reference, and Appendices are stated in Chapter Six.


The project’s goals/objectives are as follows:

1) To create a system that will protect an electric motor.

2) Create a control system that will start induction machines without damaging the equipment.



Leave a Comment