VECTOR CONTROLLED RELUCTANCE SYNCHRONOUS MOTOR DRIVES WITH PRESCRIBED CLOSED-LOOP SPEED DYNAMICS

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VECTOR CONTROLLED RELUCTANCE SYNCHRONOUS MOTOR DRIVES WITH PRESCRIBED CLOSED-LOOP SPEED DYNAMICS. Model of Reluctance Synchronous Motor. - PowerPoint PPT Presentation

Text of VECTOR CONTROLLED RELUCTANCE SYNCHRONOUS MOTOR DRIVES WITH PRESCRIBED CLOSED-LOOP SPEED DYNAMICS

  • VECTOR CONTROLLED RELUCTANCE SYNCHRONOUS MOTOR DRIVES WITH PRESCRIBED CLOSED-LOOP SPEED DYNAMICS

  • Model of Reluctance Synchronous MotorNon-linear differential equations formulated in rotor-fixed d,q co-ordinate system describe the reluctance synchronous motor and form the basis of the control system development.

  • Control Structure for Reluctance Synchronous Motor

  • Master Control Law

  • SET OF OBSERVERS FOR STATE ESTIMATIONAND FILTERING

  • Pseudo-Sliding Mode Observer for Rotor SpeedMotor equationsModel systemdefinition of error

  • Angular velocity extractor

  • The Filtering ObserverVJElectrical torque of SRM is treated as an external model input

  • Original control structure of speed controlled RSM

  • Reference Model (of closed-loop system)

    Inner & Middle Loop(real system)correction loopMRAC outer loop

  • Simulation results a1) id=const without MRAC

  • Simulation results a2) id=const with MRAC

  • Simulation results (without MRAC) b1) dq-current angle control

  • Simulation results (with MRAC) b2) dq-current angle control

  • Effect of MRAC on Various Types of Prescribed Dynamicsa) constant torqueb) first order dyn.c) second ord. dyn.

  • Conclusions and RecommendationsThe simulation results of the proposed new control method for electric drives employing SRM show a good agreement with the theoretical predictions.The only departure of the system performance from the ideal is the transient influence of the external load torque on the rotor speed.This effect is substantially reduced if MRAC outer loop is applied.It is highly desirable to employ suggested control strategy experimentally.

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