17 PM Motor Modeling and Control

17 PM Motor Modeling and Control - Permanent Magnet (PM)...

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Unformatted text preview: Permanent Magnet (PM) Motor Modeling and Control General Block Diagram (1) General Block Diagram (2) Motor Model Dynamical Equations dd vd Rs id me q dt vq Rs iq dq dt me d did 1 vd Rsid me Lqiq dt Ld 1 vq Rs iq me Ld id me PM dt Lq diq dm 1 Te TL Dmm dt J d m m dt where 3 Te iq P PM id Ld Lq 4 me P m 2 Controller in SimuLink Governing Equations PID controller can be designed as: * m m k p e k i e k d e m where m m ref e m m m re e m m f m m ref e m m m From (1) Te J d m D m m TL dt (2) (3) Te K T i q where iq Te KT d m dt J KT 3P PM ( L d L q ) i d 4 d m D m m TL dt KT (4) Desired Quadrature Current Then the desired quadrature current * d m * D m m TL J * dt iq KT Eq. (2) * d m d m * D m m (T e J D m m ) J dt dt KT J / t Dm * Te J m m m KT KT KT Eq. (3) Eq. (1) J / t Dm J ( k p e m k i e m k d e m ) m iq KT KT ~ ~ ~ J * iq iq m k p e m k i e m k d e m KT ~ ~ ~ J / t Dm where k p Ck p k i Ck i k d Ck d C KT Adaptive for different values of J, t, Dm and KT. Voltage Control Equations From d d q r dt d q d r v q R s iq dt v d R s id d L d i d PM q L q iq Then the desired control dq voltage * di d * * * r L q iq v d R s id L d dt * di q * * * v q R s iq L q r ( L d i d PM ) dt * Note: we set the desired direct current i d 0 for round rotor machine since it does not generate torque. Angle and Angular Velocity Tracking Angle Tracking Angular Velocity Tracking ...
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This note was uploaded on 11/30/2011 for the course EEL 6208 taught by Professor Staff during the Fall '11 term at University of Central Florida.

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17 PM Motor Modeling and Control - Permanent Magnet (PM)...

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