View All What are variable frequency drives? What are AC motors?
A properly maintained variable frequency drive (VFD) can provide decades and cost-effective service. Making VFD inspections and maintenance part of facility oversight can improve outcomes.
Motor innovations: Advanced motor technologies influence motor form factors, performance, and efficiencies. Examine how these technology advances can help with your next set of applications.
Five trends on buying and, specifying motor drives for industrial automation applications.
Think Again: Remote monitoring, sensors, analytics and real-time intelligence is helping those who manufacture, use, and repair motors and attached critical assets to avoid downtime with prescriptive maintenance technologies, says EASA and Plant Engineering research.
Temperature, power quality, and torque all are strong indicators of a motor's health.
A number of reasons can cause an electric motor to fail. Six reasons are discussed.
Find the right application to match the motor need and know the conditions for using a variable frequency drive (VFD).
Knowing how magnetism and electromagnetic induction work are crucial to understanding how an ac induction motor works and functions.
Motor current analysis provides information on existing issues such as loose connections, burned windings, and grounded windings.
Motor faults and failure can cause disruptions to business operations and lead to loss of productivity and reduced profits.
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.
Permanent magnet synchronous motors offer significant advantages on high-energy-consuming and high-dynamic applications, compared to induction motors. See table, photo gallery.
The types of ac drives used with ac induction motors are V/Hz, encoderless and flux vector. While there are many drives available for synchronous and servo motors, induction motors have the majority of applications. Sensorless vector control is the same as encoderless vector control, which better describes its operation.
Powerful analytical tools — software, PCs, networks, and the internet — are within a click of the mouse. Power monitoring equipment captures data; software analyzes critical data required for responsible electrical energy management. Power management software tools provide control over how you manage your use of electricity.
The August 14, 2003 blackout emphasized that power quality should not be taken lightly. The blackout was caused by, and affected the power grid — our nation's electrical infrastructure. The issues raised by this event should and will come under scrutiny. Just as the nation looks at its power quality issues, plant engineers must look at power quality issues inside the plant.
Key Concepts NEMA and IEC motor controls differ in size, ruggedness, and complexity. The solid-state overload relay is common to both NEMA and IEC motor controls.