Monthly Archives: maio 2021

Frequency Inverter – Definition

The frequency inverter is an electronic device whose main function is to transform the rotation of a three-phase motor by changing the frequency it provides at its output contacts. We can thus, toggle the speed with which the motor will work of easy form. The frequency supplied by the grid, which is the input frequency to the motor, determines the synchronous speed of the electric field through which the motor operates.

The inverter acts by changing this frequency at the motor input if the frequency is higher, consequently the motor speed s12-09a4-06 will be higher, and if the frequency is lower the speed is also lower. The use of a frequency inverter has a number of advantages, such as exploiting the operation of the motor and conditions not described in its construction characteristics. The use of the frequency inverter provides speed flexibility with safety and precision. It is possible to control the speed of the engine without extensive torque losses, smooth acceleration through programming, direct braking in the engine, no need for mechanical brakes, and various forms of speed programming according to the need of work.

Speed ​​and Reversal of Direction of Rotation

The direction of rotation of an electric motor will depend on the direction of the magnetic field and the direction of current in the armature. If the direction of the field or current is reversed, the motor rotation will also be inverted. However, if both are reversed at the same time, the motor will continue to rotate in the same direction.

The speed of an engine is given by the number of revolutions of the shaft with respect to time and is expressed wastewater solutions in units of revolutions per minute (RPM). A decrease in the magnetic field of the motor causes an increase in its speed and an increase in the field will cause a decrease in the speed of the motor. The torque developed by a motor to move a given load depends on the current intensity that the armature requests from the power supply. The higher the load, the higher the torque and consequently the higher the current. If the load is lower, the torque will be lower and the current intensity as well. To achieve a higher torque, the motor must rotate at a slower speed, so the speed of a DC motor depends on the load coupled to the shaft.