Variable Frequency Drive: PLC Motor Control

Description/Abstract/Artist Statement

This research project intends to control an AC Induction Motor with a Variable Frequency Drive (VFD). The VFD will control the motor by sending varying voltage signals to prompt the motor to operate in different directions and at different speeds. From this control, the voltage and frequency relationship can be graphed. To compensate for the losses within the motor and the load, a tachometer was used as a feedback control signal. The output signal from the tachometer would feedback into our VFD. This would allow us to close the loop on our VFD. Integrated with in the VFD is a PID controller that was tuned to stabilize the output speed. Lastly, the Panasonic Programmable Logic Controller (PLC) was integrated into the system to automate the directional and speed control of the motor. This was programmed using ladder logic and structured text for the PLC code. From this research project, a couple real world applications can be modeled.

Presenting Author Name/s

Jonathan Campbell, Frank Rawlings

Faculty Advisor/Mentor

Dr. Shu Xiao

Faculty Advisor/Mentor Department

Electrical and Computer Engineering

College Affiliation

College of Engineering & Technology (Batten)

Presentation Type

Poster

Disciplines

Controls and Control Theory | Power and Energy

Session Title

Poster Session

Location

Learning Commons Lobby @ Perry Library

Start Date

3-30-2024 8:30 AM

End Date

3-30-2024 10:00 AM

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Mar 30th, 8:30 AM Mar 30th, 10:00 AM

Variable Frequency Drive: PLC Motor Control

Learning Commons Lobby @ Perry Library

This research project intends to control an AC Induction Motor with a Variable Frequency Drive (VFD). The VFD will control the motor by sending varying voltage signals to prompt the motor to operate in different directions and at different speeds. From this control, the voltage and frequency relationship can be graphed. To compensate for the losses within the motor and the load, a tachometer was used as a feedback control signal. The output signal from the tachometer would feedback into our VFD. This would allow us to close the loop on our VFD. Integrated with in the VFD is a PID controller that was tuned to stabilize the output speed. Lastly, the Panasonic Programmable Logic Controller (PLC) was integrated into the system to automate the directional and speed control of the motor. This was programmed using ladder logic and structured text for the PLC code. From this research project, a couple real world applications can be modeled.