How to use the inverter to save energy most?

2021-10-13 08:21:27 jact_elec

How to use the inverter to save energy most?

As an electronic circuit, the inverter itself also consumes power (about 3-5% of the rated power). The power consumption of a 1.5-hp air conditioner is 20-30W, which is equivalent to a permanent light. It is a fact that the inverter runs under the power frequency and has power saving function.

But the prerequisite is:

First, high power and fan/pump load;

Second, the device itself has power saving function (software support);

Third, long-term continuous operation.

The above are the three conditions that reflect the power saving effect. Without preconditions, it is an exaggeration or commercial hype to say that the inverter's power frequency operation is energy-saving.

Knowing the principle, you will cleverly use it to serve you. It is necessary to pay attention to the use occasion and use conditions to apply it correctly, otherwise it will be blind obedience.

Power factor compensation energy saving

Reactive power not only increases the line loss and heat generation of the equipment, but more importantly, the reduction of the power factor leads to a reduction in the active power of the grid.

A large amount of reactive power is consumed in the line, and the equipment is inefficient and wasteful.

After using the frequency conversion speed control device, due to the effect of the internal filter capacitor of the frequency converter, the reactive power loss is reduced and the active power of the grid is increased.

Soft start energy saving

The hard start of the motor has a serious impact on the power grid, and the requirement of the power grid capacity is too high.

The large current and vibration generated during the start will cause great damage to the baffle and valve, which is extremely unfavorable to the service life of equipment and pipelines.

After using the frequency conversion energy-saving device, the use of the soft start function of the frequency converter will make the starting current start from zero, and the maximum value will not exceed the rated current, which can reduce the impact on the power grid and the requirements on the power supply capacity, and extend the service life of the equipment and valves , Save equipment

maintenance costs.

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In theory, the frequency converter can be used in all mechanical equipment with motors. When the motor is started, the current will be 5-6 times higher than the rated value, which will not only affect the service life of the motor, but also consume more power.

When the system is designed, there will be a certain margin in the selection of the motor. The speed of the motor is fixed, but in actual use, it sometimes needs to run at a lower or higher speed, so it is very important to carry out frequency conversion transformation. Necessary.