Speed Sensor less Separately Excited Dc Motor Drive with an Adaptive Observer

The Speed Sensor less Separately Excited Dc Motor Drive with an Adaptive Observer project describes about speed sensorless separately excited dc motor drive that make use of the adaptive observer to have an estimation of the rotor speed. The stability analysis of speed estimation is carried out.

Torque control is operated with separately excited dc motor drive systems. Closed loop drive is employed for speed control that needs the feedback speed signal from tacho generators or pulse encoders. The transducer adversely affects the constant performance of the motor and enhances the hardware complexity and costs.

With the knowledge of motor parameters, input voltage and current to the motor, the intense research on the development of speed estimation and the speed estimation is computed. Hence the closed loop estimator is accurately than open loop estimator.

The project has a speed sensorless separately excited dc motor drive with an adaptive observer to estimate the rotor speed. The speed estimation stability analyzed using Routh Hurwitz criterion.

A DC motor is like a construction of a DC generator and a DC machine consists of two parts. They are stationary part which is designed for producing a magnetic flux and rotating part is called the armature where the electrical energy is converted into mechanical energy.

Applications include Paper mills, Textile mills, Cranes, and Printing press and advantages are high starting torque, accurate stepless speed control with constant torque, and quick starting, stopping, reversing and accelerating.

The mechanical energy is converted into electrical energy with movement of conductor by a magnetic field and the conversion is also true. When electrical energy is supplied to a conductor then current flow is resulted in the conductor.

Conclusion:

This project is about speed sensorless separately excited dc motor drive that uses the adaptive observer to estimate the rotor speed using the Routh Hurwitz criterion. The design for feedback and the speed controller is to assure system stability for the complete operating region and simulated result is also provided.

Download Speed Sensor less Separately Excited Dc Motor Drive with an Adaptive Observer ECE Project Doc.

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