Presentation on theme: "IEEE Summary Paper Modeling Motor Loads for Voltage Sag and Recovery John Kueck Dmitry Kosterov John Undril Joseph Eto."— Presentation transcript:
IEEE Summary Paper Modeling Motor Loads for Voltage Sag and Recovery John Kueck Dmitry Kosterov John Undril Joseph Eto
This report breaks down each LCM motor class into categories of motor type based on protection response Joe Eto to provide introduction on: – Load response to voltage transients – Overview of FIDVR – Electronic loads
Estimates of Typical motor protection response are given for the following motor types Adjustable speed drives Large motors over 250 HP Three phase motors under 250 HP, NEMA Design B Single Phase Air Conditioners Single Phase Appliances Rooftop Air conditioners Chiller Motors larger than 250 HP
Discussion of Motor Terminal Voltage and Stall Voltage, torque and regeneration Failure to accelerate load NEMA design letters Starting schemes
John Undril to prepare section on the effect of point on wave on motor stall.
Energy efficient motors Lower breakdown and pull up torque Higher locked rotor current Lower inertia
Contactors, Solenoids and Ice Cube Relays Predominant mode for de-energizing motors Range in voltage sensitivity 3 wire control Ice cube relays can drop out at 70% V in one cycle, they are ubiquitous
Dmitry to prepare section on time frame of interest, perfect load behavior and problematic load behavior, why it matters, and what we would like loads to act like for grid stability.