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 rELATIVELY AC-DC-AC FREQUENCY conversion equipment investment is low. The disadvantage is that the output frequency is limited, otherwise the output waveb is too bad, can not meet the speed requirements of some applications, power factor is low, not conducive to energy saving, while generating a large high-order harmonics, causing interference to the power grid. The two ASC5000 converters of ABB are used to communicate with each other in real-time through optical fiber, to exchange various operation inbation and to calculate the appropriate output current through their internal mathematical models. The motor shaft is installed with a photoelectric code plate, the signal is sent to the Monitoring Plc, and then the PLC adjusts the set output current value of the inverter according to the feedback inbation of the closed loop. The speed is fed back to the PLC by the photoelectric encoder for sampling and calculation, and the setting of the frequency converter is determined according to the calculation results, so as to ensure the stable operation of the main motor and make it meet the requirements of starting and running on the spot. At the same time, the main motor as the benchmark, through the built-in motor mathematical model, according to their own output current and real-time beters sent by another motor through the calculation, adjust their output, in order to achieve power balance between the two motors. Standard Cage Induction Motors are generally self-fan cooling, that is, the motor output shaft installed on the Wind Blade, the motor in operation