Single- and three-phase alternating current (AC) motor speed can be controlled by controlling the frequency of the voltage coming to it. Motor speed has a lot to do with the capacity of refrigeration ...

Utility power plant generators are usually designed for a power factor (PF) of .8 to .9. If demand-side PF is lower than the designed PF, the generator current will rise above the equipment's rated ...

Choosing the right motor and VFD type depends on a variety of factors, however, it is necessary to first look at how the characteristics of a motor change when the speed is reduced —Sponsored article ...

Intelligent drives Telemecanique Altivar variable speed ac drives feature dual microprocessors and motor control algorithms for high torque and speed Telemecanique Altivar variable speed ac drives ...

Parker Hannifin has extended its AC30 series of variable speed AC drives up to 250kW. The move follows a recent upgrade to closed-loop control through a pulse encoder feedback option. The drives are ...

The AC induction motor is often referred to as the workhorse of the industry because it offers users simple, rugged construction, easy maintenance, and cost-effective pricing. These factors have ...

Regardless of their primary field, sooner or later, most designers have to deal with motor controls. Broadly speaking, there are two methods to incorporating these components in your design. First, ...

When the Washington State Ferry System selected a synchronous, variable-speed AC motor with a cycloconverter drive for the propulsion system on its three new Jumbo Mark II ferries, the ships became ...

Advanced materials reduce drive size by 15% compared to previous generations. The new drive family features a common user interface and options from 0.5 to 700 hp. A quickstart menu incorporates macro ...

Choosing the right motor and VFD type depends on a variety of factors; however, it is necessary to analyze how the motor changes when the speed is reduced. The experts at eMotors Direct outline ...