Title: Lesson
Course: Basic of Motor Theory (IC 105-IC 105) > Section: Web Content

This week in the study of AC drives it will be important for you to know:
The purpose of the operator control section and drive controller section.
The operation of the converter, the intermediate circuit and the inverter which are the three major sections of the AC drive.
The differences in V/Hz, AC closed-loop vector, and sensorless vector control methods.
Acceleration, deceleration, S-curve, slip compensation, critical frequency rejection, power ride-through, automatic restart, and self-protection drive functions.
Reading Assignment:
Industrial Control Electronics - Chapter #9   AC Drives
Electrical Motor Controls - Chapter #10   AC and DC Motor Drives
In the "Handout" section there are power points for each of the textbook reading assignments.
This week the "Video" section contains a video that explains the Volts/Hertz ratio of variable frequency drives. There is another that deals with troubleshooting Variable Frequency Drive failures. The third is about testing an IGBT brick, which I hope you will find helpful for troubleshooting in the field.
The "Coursework" assignment this week is:
Create a word document and answer the Problems (1-34) in the Industrial Control Electronics textbook and Questions (2, 3, 9, 10, 15, 18) in the Electrical Motor Controls textbook and upload them for grading.
A worksheet to download, complete the connections from a VDF to a PLC, and then upload.
Log in to the remote server and open the Troubleshooting Motor Circuits, click on the Finding Motor Circuit Faults button, click on the Practice Exercises button and complete Lab Faults 5 and 6, I will again check the progress through the management software after the due date.