Electric Motor Variable Speed Drives

Pulse width modulation pwm current source inverter csi and voltage source inverter vsi.

Electric motor variable speed drives.

Our powerflex 6000 drives meet applications that require variable speed motor control from 2 2 11 kv with motor current up to 680 a. Variable speed drives are being increasingly used to operate high speed compressors and pumps as a result of the high efficiency and reliability that they offer. Alternating current electric motor speeds can be changed by the use of a frequency converter. A variable speed drive is a device used in electromechanical drives to control the speed and torque of an ac motor by adjusting the motor s input frequency and voltage.

1 16 of over 3 000 results for variable speed electric motor 60ktyz synchronous gear motor 30rpm dual bearing ac motor cw ccw control 115v 60hz 10w 3 7 out of 5 stars 20. Variable speed drives may be either electric hydraulic mechanical or even electronic. Electric motor variable speed drives operation. This device changes the frequency of the alternating current to the motor.

X 6in 1 2hp 115 230 volt single phase model hvbs 56v. Electric gear motor walfront ac 220v 90w single phase asynchronous gear motor high torque deceleration adjustable speed 5k 10k 20k 50k 100k rpm optional 50k 2 3 out of 5 stars 4 178 09 178. Automatic energy savings help reduce motor loss and electric power costs. These drives offer a motor current up to 720 a for synchronous or induction motors.

There are three major vfd designs commonly used today. Frenic mega drives can provide compact yet powerful solutions for ac drive requirements in both variable and constant torque applications. This then changes the rotating speed of the motor s internal magnetic field. With more than 50 years of experience in variable speed drive business driveswarehouse stocks a large selection of ac drives dc drives variable frequency drives vfd variable speed drives adjustable speed drives adjustable frequency drives combo ac motor and drive combination and dc motor and drive combination in a wide range of.

While all variable frequency drives vfds control the speed of an ac induction motor by varying the motor s supplied voltage and frequency of power they all do not use the same designs in doing so. In electric motors used in variable frequency drives various excitation forces exist due to the presence of mechanical and electromagnetic forces. Online store of polyspede electronics corporation. These easy to use drives are well suited for variable torque applications like simple standalone centrifugal fans and pumps.