Capacity the economy electromechanical during packaging machine converter repair, the main tools in addition to the common multimeter, oscilloscope, logic analyzer, signal generator and other auxiliary maintenance equipment, the most important is inseparable from the engineers a wealth of experience in maintenance techniques. A common packaging machine inverter voltage space vector / SVPWM based on the Inverter repairs characteristics: overall innate effect of the three-phase waveforms conditions for the purpose of forced Pro motor air gap ideal circular rotating field trajectory, once born three-phase modulation waveform , cut polygon forced Pro-round control. Then improved by practice use, that is, the introduction of the frequency compensation can eliminate the error of speed control; estimation of the magnitude of the flux through feedback to eliminate the impact of low speed stator resistance; the output voltage, current, closed-loop, advances in dynamic accuracy and not arbitrary degree. , Packaging machines, inverter maintenance control mode: 1, constant torque characteristics: general use curves like straight running conveyor belt, and speed has nothing to do constant torque use spaces;, decreasing torque characteristics: as fans, pumps, load and speed was 2 power relations occasions, the use of such curves;, high starting torque: the wiring between the inverter and the motor a longer interval (about 100m), the output torque (lift load at startup) AC reactor inserted in the input or output of the inverter, motor with less than the maximum combined motor running;, constant output power operation: the curve of its run at frequencies above 50Hz, 50Hz constant voltage. Yung economic electromechanical packaging machine the converter repair business is built on the basis of mutual trust with our customers, and strive for technical excellence, and has always been safe and reliable products for the repair is completed. Yung economic converter repair customers reliable choice.