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What are the five energy-saving principles of frequency converter?

2020-06-18

With the promotion of frequency conversion technology and the promotion of frequency converter merchants, many friends subconsciously use frequency converter and energy-saving pictures. In fact, the core function of frequency converter is speed regulation, followed by energy saving. Energy saving of frequency converter needs to meet three conditions: first, high power and fan / pump load; second, the device itself has power saving function (software support); third, long-term continuous operation. This is the three conditions that the inverter can reflect the power saving effect.


Here are five energy-saving principles of the frequency converter:


1。 Frequency conversion energy saving:


In order to ensure the reliability of our production, there will be a certain margin in the design of power for all kinds of production machinery. The motor cannot operate at full load. In addition to meeting the requirements of power drive, the excess force increases the consumption of active power, which leads to the waste of electric energy. When the pressure is high, the running speed of the motor can be reduced. It can also save energy under constant pressure. When the motor speed changes from N1 to N2, the change of motor shaft power (P) is as follows: P2 / P1 = (N2 / N1) 3, indicating that reducing the motor speed can achieve considerable energy saving effect.


OPE电竞竞猜娱乐2. Dynamic regulation and energy saving:


Adapt to the load change quickly and provide the most effective voltage. The frequency converter has 5000 times / s measurement and control output functions in the software, which makes the output of the motor always keep efficient operation.


OPE电竞竞猜娱乐3。 The V / F curve can be adjusted automatically through the frequency conversion function:


The V / F curve can be adjusted automatically when the motor output torque is guaranteed. The output torque and input current of the motor are reduced to save energy.


OPE电竞竞猜娱乐4. Frequency conversion start energy saving:


When the motor starts at full voltage, due to the starting torque of the motor, it needs to absorb 7 times of the rated current of the motor from the grid. The starting current is large and the grid voltage and voltage fluctuate. There are still many damages, which will increase the line loss and damage. After soft start, the starting current can be from 0 - rated current of the motor, reducing the impact of starting current on the power grid, saving power charges, and reducing the inertia of starting inertia, so as to ensure the use of high inertia equipment and extend the equipment.


OPE电竞竞猜娱乐5. Improve power factor and save energy:


OPE电竞竞猜娱乐The motor generates torque through the electromagnetic action of stator winding and rotor winding. The winding has inductive effect. For the power grid, the impedance characteristic is inductive, and the motor absorbs a lot of reactive power when it is running, resulting in a low power factor. After adopting the frequency conversion energy-saving governor, because its performance has been changed to AC-DC-AC, the load characteristics have changed after rectifying and filtering. The frequency converter has the characteristics of resistance to grid impedance, high power factor and low reactive power loss.


Shenzhen frequency converter


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