| In this paper, the existing energy-saving technologies of asynchronous motor were analyzed and compared in the aspect of meeting the current actual needs. Based on this comparison, the intelligent energy-saving soft start energy-saving device was selected for protection for improving product quality, increasing productivity and saving energy with the significance. The asynchronous motor operation mode and steady-state energy were analyzed firstly, and a detailed list of the asynchronous motor operation mode, inverter power loss analysis, and the performance affection of induction motors when operating were brought out; Second, the steady-state operation of energy-saving measures of asynchronous motors and dynamic energy analysis during operation were discussed; Last, the intelligent soft-start energy-saving devices were investigated. Started with intelligent soft-start performance requirements for energy-saving device, the system block diagram, program structure design, hardware circuit design and printed circuit board design detailed were analyzed one by one. And the main circuit structure, detection circuit design, the protection circuit design, MCU control circuit design and trigger circuit design were calculated and electrical diagrams were drew out, and the experimental results were provided. The starting method can be set according to the load, which is more convenient and flexible. Inverter power supply changes the operating conditions of induction motor, so that the motor design principles also have a corresponding change. The main change is the inverter power supply through the inverter transformer solves the problem of the asynchronous motor, which rotor slot can be objective to improve the steady-state operation to optimize the design, further optimized of the overall size of the motor. Inverter power supply also brings disadvantages to motor design, mainly harmonic content increases. So the electromagnetic induction motors should be designed to meet certain special requirements are based on the best plate to reduce harmonic currents to reduce harmonic loss and improve motor efficiency. Analysis of energy conservation measures in the running process of AC induction motor plays a decisive role in this article. |
