What is frequency conversion? What is the function of frequency converter?
Theoretically, the inverter can be used in all mechanical equipment with electric motor, the motor starts, 5-6 times higher than the rated current, will not only affect the motor service life and consume more power. In the design of the system in the motor selection will leave some margin, the speed of the motor is fixed the same, but in actual use, sometimes running at low or high speed, so the frequency transformation is very necessary. Transducer can realize soft starting and compensating power factor of motor
Soft start energy-saving1: Motor hard start a serious impact on the power grid, but also on the power grid capacity is too high, damage to the baffle and valve high current and vibration generated when starting the great of equipment, is extremely detrimental to the life line. While the use of variable frequency energy saving device, using the frequency converter soft start function will start the current starting from zero, will not exceed the maximum rated current, the impact on power loss and the power supply capacity to prolong the service life of equipment and valves. It saves the maintenance cost of equipment.
Power factor compensation, energy savingThe reactive power will not only increase the heating power loss and equipment, more important is to reduce the power factor of the power grid leads to the decrease of active power, reactive power consumption in a large number of lines, low efficiency, serious waste of equipment, the use of frequency control devices, the inverter internal filter capacitor, thereby reducing the reactive power loss, increase active power grid.
Frequency conversion energy savingThe frequency converter energy saving mainly displays in the fan, the water pump application. In order to ensure the reliability of production, all kinds of production machinery in the design and use of power driven, have left a certain amount of surplus. When the motor can not run under full load, in addition to the power driven requirements, the excess torque increases the consumption of active power, resulting in waste of energy. Speed control method of fan and pump equipment traditional by regulating the entrance or exit of the baffle, valve opening to regulate air flow and water supply, its high input power, and a large amount of energy consumption in the process of the baffle and valve closure. When using the variable frequency speed regulation, if the flow requirements are reduced, by reducing the speed of the pump or fan can meet the requirements.
Frequency conversion:1, the frequency conversion is to change the power supply frequency, thus adjust the load, play a role in reducing power consumption, reducing the loss and prolonging the service life of the equipment. Frequency conversion.2, the core of frequency conversion technology is frequency converter, through the power frequency conversion to achieve automatic adjustment of motor speed rate, the fixed frequency of 50Hz is changed to 30 - 130 Hz frequency. At the same time, the utility model makes the voltage range of the supply voltage reach 142 - 270V, and solves the problem that the voltage of the power grid is unstable, which influences the work of the electric appliance. The technique of alternating current control by changing the frequency of alternating current is called frequency conversion technology.
