Medium-voltage frequency conversion speed regulation device special for electric submersible pump
A technology of submersible electric pump and frequency conversion speed regulation, which is applied in the direction of output power conversion device, electrical components, AC motor control, etc., can solve the problems of affecting the insulation of cables and motors, shortening the service life, etc. cost, reduced insulation damage, reduced footprint and cost
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[0016] The specific embodiments, structures, features, and effects provided in accordance with the present invention will be described in detail below with reference to the drawings and preferred embodiments.
[0017] Such as figure 1 A medium voltage variable frequency speed regulation device for submersible electric pumps shown includes a rectifier module, a DC filter module, an inverter module, and a sine wave filter. Three-phase 700V~3300V AC power is input through the rectifier module 1, and first converted into DC power , The output of the rectifier module 1 is connected in parallel with the DC filter module 2 to filter the DC power. The positive, zero, and negative voltage outputs of the DC filter module 2 are connected to the corresponding position of the inverter module 3, and the inverter module 3 outputs three-phase AC voltage connection To the sine wave filter 4, the filtered three-phase AC voltage is output by the sine wave filter and connected to the electric submers...
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