Abstract: the principle of stepping motor according to the division of different have different categories, including step generator is one of the very common stepper motor which has been widely applied and a motor, sometimes when on application in parallel operation, such as: parallel to the grid. This paper is to introduce the stepper motor step generator the advantages of parallel operation. A, the reasonable use of electrical energy of the stepper motor step generator will often need to run in parallel in actual application, parallel to the grid is the most common way of a kind of parallel operation, the operation mode makes the power supply can swap, to carry on the reasonable use, won't appear in some areas appear the phenomenon of the power supply insufficient. Second, increase the reliability of the power supply step motor stepper generator in parallel operation can also increase the reliability of power supply, thereby reducing the occurrence of accidents, a more safe and reliable operation. Three, heighten the parallel operation of the power supply quality stepper generator can improve the quality of power supply, provide people with better power supply, solve the problem of electricity needed. Four, different load compensation function of the stepper motor step generator in parallel operation mode in addition to possess the advantages of the above, when the application system, the greater the load, the more will tend to be more uniform, to the load of different nature, can play the role of mutual compensation between each other. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: