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ECEN 4167 - Energy Conversion 2

Elective - 3 credit hours
On-Line Course Materials

Catalog Description: Review of components of variable-speed drives, power semiconductor switches, commutation, armature-voltage, and field-weakening control. V/f and E/f speed-control algorithms for induction machines are studied. MATHEMATICA, MATLAB and PSPICE are applied to control systems, converters and machines.

Studies the derivation of the dynamic equations of motion of electromechanical systems, e.g., relays, transducers, loudspeakers and microphones, linear and rotary motion machines based on variational principles and basic force laws (e.g., Newton's law, Kirchoff's laws, etc.). Looks at equivalent circuits in abc and dqo coordinates for AC and DC machines. Discusses conditions under which an electromagnetic torque can be produced. Applies theory to the most important modes of steady-state and transient operation of electrical energy converters.

Prerequisite: ECEN 3170, Energy Conversion 1

Textbook: Notes.

Course objectives: Understanding of the elements and concepts of variable-speed drives and their potential for energy conservation and increasing the efficacy of industrial processes. The theory, open- and closed-loop control, and application of DC motors to real-life applications, where controlled currents, torques, forces, speeds and positions are required. Emulate the performance of DC machines when controlling induction machines, leading to vector and direct torque control.

Topics:

  1. Elements of power semiconductor drive including mechanical loads, power sources, and control components
  2. Commutation of DC motors
  3. Rectifier control of DC drives
  4. Generation of closed-loop control of DC drives
  5. Principles of induction motors
  6. Steady-state performance of induction motors fed by AC voltage controllers, voltage source, and current source inverters
  7. Speed and torque control based on proportionality of V-voltage and frequency, and of E-induced voltage and frequency.
Class schedule:3 hours of lecture per week

Contribution of course to meeting Criterion 4, the professional component: This course provides 3 semester hours of electrical engineering topics consisting of engineering sciences and engineering design.

Relationship of course to program outcomes: This course is not required and is not included in outcomes assessment.

Prepared by: Power Electronics Group, V. Heuring
May 16, 2005.