Frequency Conversion and Energy Saving of Inverter

- Aug 31, 2018-

    Frequency conversion.jpg

    The energy saving of the inverter is mainly reflected in the application of the fan and the water pump. In order to ensure the reliability of production, various production machines have certain room for designing power drive. When the motor is not operating at full load, in addition to meeting the power drive requirements, the additional torque increases the consumption of active power, resulting in wasted power. Traditional speed control methods are fans, pumps, and other equipment that regulate air volume and water supply by adjusting the baffle and valve opening of the inlet or outlet. The input power is large and consumes a lot of energy during the interception of the baffles and valves. When using variable frequency speed regulation, if the flow demand is reduced, the speed can be met by reducing the speed of the pump or fan.

    The role of the motor in the frequency converter is to accelerate and reduce the starting current. In order to generate a variable voltage and frequency, the device first converts the alternating current of the power source to direct current (DC), a process called rectification. A device that converts direct current (DC) to alternating current (AC) is scientifically referred to as an "inverter." A general purpose inverter is an inverter power supply that reverses the DC power supply to a specific fixed frequency and a specific voltage. For inverters with adjustable frequency and adjustable voltage, we call them inverters. The waveform of the inverter output is an analog sine wave, which is mainly used for the speed regulation of a three-phase asynchronous motor, also called a frequency converter. For inverter inverters with high waveform requirements, which are mainly used for instrument test equipment, waveforms should be classified to output standard sine waves, called variable frequency power supplies. The general variable frequency power supply is 15-20 times the price of the inverter. Since the master device that produces a varying voltage or frequency in the inverter device is referred to as an "inverter," the product itself is referred to as an "inverter," ie, an inverter.

    The inverter does not save power anywhere, and there are many occasions where the use of frequency conversion does not necessarily save power. As an electronic circuit, the inverter itself consumes power (about 3-5% of rated power). The 1.5-pound air conditioner consumes 20-30W, which is equivalent to a long lamp. In fact, the inverter operates at a power frequency and has a power saving function. But his prerequisites are:

    First, high power and is a fan/pump type load;

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

    This is the three conditions that reflect the power saving effect. In addition, it doesn't matter if the festival doesn't save electricity. If you have not added the prerequisites to say that the inverter power frequency operation is energy efficient, then exaggerate or commercial speculation. Know the original, you will use him skillfully. Be sure to pay attention to the use of the occasion and the conditions of use in order to use correctly, otherwise it will be blind obedient, credulous and "be deceived."


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