| More Resources: Power Transformers Three Phase Converter Applications Rotary Phase Converter Co. Phase Control Phase Inverter | |||
Variable Speed Drive Home
Variable Speed AC Drive
ABB Drives
Yaskawa Drives
Motor Speed Control
Inverter Motor
Servo Motor
WEG Variable Speed Drive
Baldor Variable Speed Drive
Frequency Drive
|
Frequency Drive
A frequency drive is a drive that controls the frequency of the electrical power that is supplied to a motor. A frequency drive is most often known as a variable frequency drive but is also known as an adjustable frequency drive, variable speed drive, AC drive, microdrive and also inverter drive. Sometimes they are even called variable voltage frequency drives due to the fact that the voltage is varied along with the frequency.
Most frequency drives consist of an AC motor with a controller and an operator interface. Operator interface on a frequency drive is referring to a means of an operator to be able to start and stop the motor and to be able to adjust the speed of the motor. Sometimes, you can even reverse and switch between manual speed adjustments or automatic control. The operator interface on a frequency drive is generally a keypad that provides numeric displays, indication lights and meters. A motor usually works by switching to a grid at full voltage. It will draw at least 300% of its rated current from the power source. As soon as the load accelerates, the torque will drop and then will rise to a peak at which time the current will remain very high until the motor has reached it's full speed. When a frequency drive starts a motor, it will apply a low frequency and voltage to the motor. The start-up frequency is usually 2 Hz or less. Starting a motor at a lower frequency does away with any high inrush current that you see by starting a motor without a frequency drive. Once the frequency drive is started, the frequency and voltage will be increased at a controlled rate without drawing any excessive current. By using the frequency drive, a motor will only develop 150% of the rated torque and will draw less than 50% of the rated current from the power source in a low speed range. Big savings are seen by using a frequency drive to start your motors. To learn more about the frequency drive, contact your TEMCo frequency drive specialist and they can provide you with any information needed on them. TEMCo distributes several makes and models of frequency drives such as AAB drives, Yaskawa drives, WEG variable speed drives and Baldor variable speed drives. TEMCo is one of the leading electrical product distributors and manufacturers in the industry and has been in business now for over 40 years providing quality products.
CALL TEMCo for all your variable
speed drive
needs!! Remember to Bookmark Us: Frequency Drive |
More Resources:
Power Transformer TEMCo's team of experienced Variable Speed Drive specialists are standing by to assist you! |
|
A
frequency drive is widely used in today's industry. They are
used in ventilation systems that are used for large buildings such as the
motors on fans. They are also used on other applications such as
machinery tool drives, conveyors, pumps and many more. The most common
type of drive that uses a
