Real-Time Performance Evaluation of a Genetic-Algorithm-Based Fuzzy Logic Controller for IPM Motor Drives Presented by, K.Aishwarya S.Meenakshi M.Surya Bharathi Guided by, Mrs.A.shakila Banu M.Tech,(Ph.D) (Head of The Department/ICE)

ABSTRACT The main aim of this project is to maintain a constant RPM(Rotation Per Minute) of an interior permanent magnet synchronous motor drive in real time even when a over load is given. In this project the speed control technique is proposed using a pulse width modulator of interior permanent magnet synchronous motor drive.

LITERATURE REVIEW In Comparative analysis by M.N.Uddin in 2003, there was a comparison between intelligent controllers. In Efficiency optimization by K.Ranjith Kumar ET.AL in 2010, the concept used was Fuzzy PSO which was suffered of low values. In Direct Torque control method by D.Siva Krishna ET.AL in 2011, the PID Controller was used which needs a exact mathematical model.

EXISTING METHOD In Existing method the speed and torque can be controlled using proportional controller and proportional integral controller. These controllers are affected by the sudden change in command speed . PI-based system is sensitive to load disturbances while the stator current swiftly reaches to its new value corresponding to the load applied.

DISADVANTAGES OF EXISTING METHOD In existing method the PID Controller need the exact mathematical model of the system. This method cannot adopt load disturbance.

PROPOSED METHOD In this proposed method to control the speed of the motor using pulse width modulation(PWM). Thus the micro controller generates PWM signal to control the motor and the torque of the motor is maintained constant. It is very effective in terms of speed tracking with disturbance rejection.

ADVANTAGES OF PROPOSED SYSTEM The PWM technique gives high efficiency in varying load conditions. The speed can be varied with less loss using Pulse Width Modulation (PWM). It has been found more robust as compared to the conventional PI-controller-based system.

Hysteresis current controller BLOCK DIAGRAM Set Value Panel Hysteresis current controller PWM Inverter Motor Hall Effect Sensor Encoder PIC Microcontroller (GFLC control) Filter

CIRCUIT DIAGRAM

CIRCUIT DESCRIPTION When AC is applied to the diode, electrons will flow only when the anode and cathode connected in negative terminals. RD4 to RD7 are data pins and RD0to RD2 are control pins. Pins 13 and 14 are connected to oscillators which provides clock reference for PIC. Based on the signal pulse width signal is produced to control the speed of the synchronous motor at fixed rate.

SOFTWARE DESCRIPTION Flow code 3 is one of the World’s most advanced graphical programming languages for microcontrollers. Flow code is a development environment commercially produced by Matrix Multimedia for programming embedded devices such as PIC, AVR and ARM using flowcharts instead of a textual programming language. The great advantage of Flow code is that it allows those with little experience to create complex electronic systems in minutes

FLOW CHART

SIMULATION RESULT

RESULT ANALYSIS The speed of the motor and the value of the load are displayed on FLOWCODE. The speed of the interior permanent magnet synchronous motor is controlled and maintained constantly. This leads to high efficiency and high accuracy in motor drives.

OUTPUT OF THE SYSTEM S.NO SET SPEED OUTPUT SPEED 1 30% 240 RPM 2 50% 90% 690 RPM 4 100% 1000 RPM

CONCLUSION The project work is completely the speed control of interior permanent magnet synchronous motor using pulse width modulator. The speed has been analyzed for various loads which has a same recovery time. The load was given at below rated speed, rated speed and above rated speed, in all conditions the recovery time was maintained constant. This proves that this method maintains a constant RPM.

FUTURE WORK This project is executed in the way of readymade software. In future this project can be executed on the basis of newly developed software which will be highly efficient and also give appropriate results. In future using the lab VIEW and DCS simulation process can be done to show the accuracy of results.

REFERENCES [1] G. R. Slemon, Electric Machines and Drives. Reading, MA: Addison-Wesley, 1992, pp. 503–511. [2] F. Blaschke, “The principle of filed orientation as applied to the new transvector closed-loop control system for rotating-field machines," Siemens Rev., vol. 34, no. 3, pp. 217–220, May 1972. [3] www.electrical4u.com/speed-control-of-dc-motor

THANK YOU