Synopsis
This is the second part of a two day class designed to show you the fundamentals of motor operation and selection as well as how to design motor circuits. Learn the basics of variable frequency drive application. See how to model various motor parameters for determining a motor’s effect on the power distribution system including voltage flicker, harmonics and torque speed analysis.

Description

POWER SYSTEM ANALYSIS OF MOTORS
Thevenin Equivalent Circuits, RLC Circuits, Series and Parallel Circuits, Wye Delta Conversions

SOURCE MODELING AND STRENGTH
Effect of Source Strength on Motor Starting and Operation, Per Phase Analysis, Short Circuit Considerations, Motor Contribution, Rotating Machine Subtransient Reactance, Motor Circuit Analysis Models, Rotor and Stator Impedances

PER UNIT MODELING OF MOTORS
Base Quantities, Per Unit Examples, Per Unit Worksheets, Developing Impedance Diagrams for Problem Solving, Induction Machine Modeling

MOTOR MODELING
Motor Starting and Voltage Drop, Voltage Flicker, Flicker Curve Interpretation, Impact of Source Impedance and Motor Size on Voltage Flicker

HARMONIC CONSIDERATIONS
Drives and Non Linear Loads, Constant Current Source Model, Harmonic Simulations, Capacitors and Resonance, Total Harmonic Distortion Calculations, IEEE 519 Limits, Point of Common Coupling, Relationship of Load vs. Source Strength in Determining Limits