analysis and design of chaos in switched reluctance

ANALYSIS AND DESIGN OF CHAOS IN SWITCHED RELUCTANCE DRIVE SYSTEM

ByS. Anandraj -1051603

PHASE-IPROJECT WORK

GUIDE: PROJECT CO-ORDINATOR:

V V RAJASEGHARAN M.E Dr. L. PREMALATHA M.E, PHD. Assistant Prof Head Of DepartmentAnand Institute of Higher Technology Electrical & Electronics Engineering Anand Institute of Higher Technology

OBJECTIVE

• To model a switched reluctance motor drive system with

switched reluctance actuator to control the motor.

• To analysis the chaos generated in the drive system that

can arise for certain parameter variations and the output

waveforms are analyzed and testified to the theoretical

analysis.

SOFTWARE TOOLS

MATLAB R2010a.

PSIM.

SWITCHED RELUCTANCE MOTOR

• A Reluctance motor is a type of electric motor that induces non-

permanent magnetic poles on the ferromagnetic rotor. Torque is

generated through the phenomenon of magnetic reluctance.

• Reluctance motors can have very high power density at low-cost,

making them ideal for many applications. Disadvantages are high

torque ripple when operated at low speed, and noise caused by

torque ripple.

• The phase windings in a SRM are electrically isolated from each

other, resulting in higher fault tolerance compared to inverter driven

AC induction motors.

SRM Design in MATLAB

DESIGN CONSIDERATIONDesign Parameters:Supply voltage V = 150v

Resistance R = 0.01 ohms

Inductance Lmax = 60mH (must be as large as possible)Lmin = 8mH

Phase current, i = 7 amps

Stator pole arc= rotor pole arc ᶀs = ᶀr = 30 = ∏/ 6

CLOSED LOOP DESIGN OF SRM

SWITCHED RELUCTANCE ACTUATOR

Position/ speed sensors provide information to the ECM about the position of a component, the speed of a component, and the change in speed of a component. Position sensor in the switched reluctance motor detects the rotor position. Rotor position sensor gives signal to the controller which generates the switching pulses to the switches at an interval 60deg.

DESIGN OF POSITION SENSOR

DESIGN OF SWITCHED RELUCTANCE ACTUATOR

CLOSED LOOP CHARACTERISTICS

SIMULATED OPERATION WITH V=240v • Trajectory of total current versus flux

• Trajectory of total current versus torque

SIMULATED OPERATION WITH V=100v • Trajectory of total current versus flux

• Trajectory of total current versus torque

SRM DRIVE USING PSIM

TRAJECTORY OF TOTAL CURRENT VERSUS TORQUE

CONCLUSION• The project work carried out has highlighted the detailed

analysis of Switched Reluctance Motor closed loop

model with chaos.

• The design calculations were done manually and verified

by the output of Matlab simulation and PSIM tool.

• Chaos is generated and its behaviour is studied for varies

parameter.

FUTURE WORK

For the above work done, A linear and non-linear

model of SRM will be designed & its chaotic behaviour will

be studied.

The hardware implementation will be developed for

the above designed Switched Reluctance Motor drive with

Actuator and chaotic behaviour will reduced using PWM

technique.

References• Analysis and Design of a Cost Effective Converter for Switched

Reluctance Motor Drives Using Component Sharing Z. Zhang, N.C.Cheung, K.W.E. Cheng, X.D. Xue, J.K Lin, and Y.J Bao, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong

• Chaoization of Switched Reluctance Motor Drives J.F. Huang, J.H. Chen, and K.T. Chau, Department of Electrical Engineering, Tsinghua University, Beijing 100084, P. R. of China, Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, P.R. of China

• T. J. E. Miller, Switched Reluctance Motors and Their Control. Oxford, U. K.: Magna , 1993.

• Analysis of Chaos in Current-Mode-Controlled DC Drive Systems J. H. Chen, K. T. Chau, Member, IEEE, and C. C. Chan, Fellow, IEEE

• I. Nagy, L. Matakas Jr., and E. Masada, “Application of the theory of chaos in PWM technique of induction motors,” in Proc. Int. Power Electron. Conf., 1995, pp. 58–63.

• Y. J. Zhan, C. C. Chan, and K. T. Chau, “A novel sliding mode observer for indirect position sensing of switched reluctance motor drives,” IEEE Trans. Ind. Electron., vol. 46, pp. 390–397, Apr. 1999.

• J. H. Chen, K. T. Chau, and Q. Jiang, “Analysis of chaotic behavior in switched reluctance motors using voltage PWM regulation,” Elect. Power Compon. Syst., vol. 29, no. 3, pp. 211–227, 2001.

Thank you