Low-voltage drives in Kazakhstan
Converting electrical energy into mechanical energy is a pressing issue today. It's important to minimize electricity consumption and ensure efficient operation of electric drives. Drives control synchronous and asynchronous motors, which convert energy into mechanical work.
Variable-frequency low-voltage drives (VFDs) provide solutions for controlling electric motors and improving their efficiency. This type of equipment is popular and widely used in industrial automation systems.
Variable-frequency drives are designed to control synchronous and asynchronous electric motors. They consist of two modules: an inverter and a rectifier.
The rectifier converts high-frequency industrial current into direct current. The inverter transforms direct current into alternating current, giving it the desired frequency and amplitude.
As a result of the coordinated operation of the two components of the frequency drive, the motor moves at a given speed and maintains the nominal torque on the shaft.
Selecting a Variable Frequency Drive
When choosing a variable frequency drive, you need to pay attention to several important points:
- The converter's power allows for the control of mechanisms; the higher the power, the wider the range of devices that can operate with this type of equipment. This makes the device versatile and capable of performing more tasks.
-
The input voltage in electrical networks often fluctuates, so the higher the declared range for a given indicator for an adjustable drive, the higher its quality.
-
It's important to select the optimal control mode for a variable frequency drive. They can be equipped with a programmable controller, integrated or remote control panels, or controlled directly via terminals.
-
Variable frequency drive control methods are divided into scalar and vector. The latter allows for the control of high-power motors and is used with pumps, conveyors, and fans. Vector control allows for varying the rotor's magnetic flux, allowing for normal motor operation and precise control of shaft speed and torque.
The frequency control range is also an important operating parameter for frequency drives. The lower limit indicates the motor speed control range.
VFDs have many more technical parameters, and understanding them can be quite complex. Therefore, to purchase low-voltage drives, please contact the consultants at Power Technology Solutions. They will help you select the right equipment and find the best delivery options to any region of Kazakhstan.
