From the course: Electrical Systems: Panel Boards, Frequency Drives, and Transformers
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VFD options
From the course: Electrical Systems: Panel Boards, Frequency Drives, and Transformers
VFD options
- [Instructor] In addition to these components, most variable frequency drives have some sort of operator control that allows the operator or user to command the motor to function as desired manually or through the use of motor control inputs and outputs. Two, a housing. Some sort of housing that's suitable for the environment. VFDs may also have a fuse section designed to protect the motor and the sensitive electronics on the drive from dangerous currents and spikes. A line reactor. This reduces the harmonics or electrical noise associated with VFDs. Input line reactors are common on most applications. Communications electronics interface or communications device. This allows the VFD to be commanded by an external program, an external user interface, or by signals produced by remote sensors. Dynamic braking. Dynamic braking allows a VFD to electrically assist in stopping a motor. This may include resistors to help absorb some of the voltage that would normally go to the motor. You…
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