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As the explosion-proof inverter has the advantages of dust-proof, moisture-proof and explosion-proof, it is mainly used in the coal mine, oil and gas, petrochemical and chemical industries. In addition, it can also be applied in such sectors as textile, metallurgy, city gas, transportation, grain and oil processing, papermaking, and medicine. Explosion-proof inverters are usually used to drive pumps, fans, compressors and other transmission machinery. Explosion-proof inverter start box With the rapid development of AC speed control system, it will also have more extensive applications.
Explosion-proof inverter is the application of frequency conversion technology and microelectronics technology, by changing the frequency and amplitude of the motor power supply to control the AC motor power transmission components. The main circuit is a power conversion section that provides voltage modulation and frequency modulation to an asynchronous motor. The filtering of the DC loop is a capacitor. The current type converts the DC of the current source to AC, and the DC loop filter is an inductor. It consists of three parts: a "rectifier" that converts the power-frequency power source into a direct-current power, a "fluid-wave circuit" that absorbs the voltage ripple generated by the converter and the inverter, and an "inverse" that converts the direct-current power into the alternating-current power. Changer."
The function of the explosion-proof inverter start box is to change the frequency and amplitude of the AC motor power supply, thus changing the cycle of its moving magnetic field, and achieving the purpose of smoothly controlling the motor speed. The appearance of the frequency converter makes the complex speed control simple, and replaces most of the work that could only be done with a DC motor with a combination of a frequency converter and AC squirrel-cage induction motor, which reduces the volume, reduces the maintenance rate, and makes the drive The technology has developed to a new stage.
With the maturation and perfection of low-voltage AC frequency control technology, general-purpose inverters have been rapidly and widely applied. But sometimes, due to the particularity of working conditions, general-purpose inverters seem to be stretched.