Inverters – Operation and Maintenance
$49.00
Duration: 1h
This lesson explains the design and operation of inverter drives, and describes control features provided by inverter drive systems. This lesson provides procedures for inspecting and maintaining inverter drives, and gives explanations of common error messages.
Objectives:
- State the function and parts of inverter drives
- Describe the principle of operation of pam and pwm inverters
- Review the operation of a typical induction motor and explain the formula for synchronous speed
- Explain how to calculate slip percentage and how inverters compensate for slip
- Describe the three types of inverter drives and describe open-loop and closed-loop control and how flux-vector control drives work
- Explain how an inverter in a variable-torque application can conserve energy, and how an inverter drive can be used for soft-starting
- Describe environmental conditions that adversely affect inverter drivers and describe safety precautions for working with drives
- Give examples of error messages associated with electrical or motor problems
- Describe a drive overtemperature fault
