The permanent magnet synchronous variable frequency integrated machine electric drum system is a new type of driving equipment independently developed and produced by our company, with a low-speed high torque external rotor permanent magnet synchronous motor as the core. The motor rotor is the driving system drum, eliminating intermediate transmission equipment such as reducers and couplings, truly achieving direct drive transmission, higher efficiency, simpler and more compact structure, and smooth operation with low maintenance costs. Can be applied in fields such as belt conveyors, cranes, food processing oil presses, etc.