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Printing＆Dyeing machine motor is always in the power generation mode, the usual practice is to use the brake unit, brake resistor, the energy generated by the axial flow brake in the form of heat consumed. For jigger machines that have been operating in generation mode for many years, this is a waste of energy. The Flextronics inverter can conveniently support the public DC bus. In practice, the P N buses of the two inverters are directly connected in parallel. In this way, the energy generated by the normal operation braking is returned to the driven motor through the parallel bus. In order to consider rapid deceleration, it is possible that both motors are in a state of power generation, and one of the inverters is still connected in parallel with a braking resistor. The resistor works for a short time and consumes very little energy. Always a jigger control cabinet below a large resistance box can now be completely canceled, both to save energy, but also to avoid a large heat source, which has improved the reliability of the system.