ELEN E4501

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Electromagnetic Devices and Energy Conversion

  1. INTRODUCTION

  2. MAGNETIC CIRCUITS
    • Magnetic circuit laws.
    • Linear analysis.
    • Nonlinear analysis of single loop circuits.
    • Graphical analysis of general nonlinear circuits.
  3. ENERGY STORAGE
    • Interaction of fields and materials.
    • Electric energy storage.
    • Magnetic energy storage.
    • Circuit parameters of energy storage devices.
    • Elementary design of energy storage devices.
    • Residual parameters of energy storage devices by quasi-static analysis.
    • Circuit behavior of nonlinear energy storage devices.
  4. ENERGY LOSS
    • High frequency dielectric and magnetic energy loss.
    • Complex permittivity and permability.
    • Hysteresis and eddy current losses.
    • Complete equivalent circuit of energy storage devices.
  5. ENERGY TRANSFER
    • Ideal 2-winding transformer.
    • Ideal multi-winding transformer.
    • Non-ideal 2-winding transformer.
    • Equivalent circuits.
  6. MAXWELL'S EQUATIONS FOR MOVING MEDIA
    • Effects of motion of polarizable, magnetizable and conductive media.
    • Relation between fields in moving and stationery frames of reference.
  7. DYNAMIC EQUATIONS OF LUMPED ELECTROMECHANICAL SYSTEMS
    • Principles of virtual work.
    • Derivation of mechanical force of electromagnetic origin from energy and co-energy.
    • Nonlinear equations of motion.
  8. INCREMENTAL MOTION ANALYSIS
    • Linearization of equations of motion.
    • Solutions.
  9. PRINCIPLES OF ROTATING MAGNETIC DEVICES
    • Derivation of torque from energy and co-energy.
    • Reluctance motor.
    • Single phase synchronous machine (with current excitation).
    • Single phase general.
  10. TWO-PHASE ROTATING MACHINES
    • Two-phase generalized machine.
    • Torque for a smooth air gap machine.
    • Criteria for conversion of average power.
    • Explanation by revolving magnetic field concept.
    • Equations of motion.
  11. MICRO-MACHINES AND MICRO-INSTRUMENTATION
    • Surface micro-machining processed in LPCVD polysilicon, silicon nitride and polymide.
    • IC-processed electrostatic micro-motors, precision sensors and micro-actuators.
  12. SUPERCONDUCTIVITY AND APPLICATIONS
    • Transition temperature and critical magnetic field.
    • Landau's equations.
    • Applications in magnet technology, electric generators, high power cables and magnetic levitation.