What are variable frequency drives? What are AC motors?
Variable frequency drives (VFDs), or ac drives, are designed to reduce energy usage by controlling the speed of the motor and can offer cost-effective benefits for plants. AC motors convert electrical energy into mechanical rotating or linear energy to operate industrial equipment.
Although offline or static testing is an important part of a routine maintenance program, dynamic testing of motors can be done more frequently and, in many cases, with greater benefit.
The use of variable frequency drives (VFDs) has many benefits including improved process control, energy savings, higher reliability and reduced wear and tear.
End users desire speed and/or torque control procure and install VFDs to modify existing applications where a standard-induction motor is in place. There are a few areas of concern involving misapplication of a standard induction motor.
Variable frequency drives (VFDs) are designed to reduce energy usage by controlling the speed of the motor and can offer cost-effective benefits for plants.
Awareness and testing for potential shaft current on motors can help companies experience fewer problems with downtime and equipment failure.
How product innovations are revolutionizing pump monitoring and process control management.
Harmonics mitigation, filtering voltage spikes are two key issues.
ANSI/EASA AR100 provides best practices for mechanical repair, electrical repair including rewinding, and testing that help apparatus rebuilders maintain or enhance the performance, reliability, and energy efficiency of ac and dc motors and generators.
A basic understanding of frame construction can help minimize motor vibration.
When combining a motor and inverter, the application should tell you what type of motor fits best. If you follow these guidelines, you can avoid more than is necessary.