Modular motor assembly and motor driving system

The invention relates to the technical field of motor driving equipment, particularly to a modular motor assembly and a motor driving system. The modular motor assembly comprises: at least one connecting unit, wherein the connecting unit comprises a power output end and at least three power input ends; and at least one motor unit detachably connected to any power input end. According to the modular motor assembly, the motor structure can be modularized, and the multiple motor units are combined through the connecting units so as to convert transmission of the multiple power input ends into thesame power output end, so that the motor unit is flexibly assembled or disassembled on the connecting unit according to the power parameters required by the executing mechanism in the driving systemrequired by the user, especially the motor units with different diameters and the like are combined to quickly form a driving system with different parameters, motor products are customized as required, the design period of th