The Research And Design Of Energy-saving Controller For Synchronous Motor

Saving energy for synchronous motor is an important component of saving energy formotor. The synchronous motor is used widely because of the constant speed and adjustablepower factor. The adjustment method of the excitation system of synchronous motor isopen-loop manual adjustment. When the load changed， the current controller cannotimplement closed-loop control to save power energy. Therefore， it is necessary to researchnew synchronous motor controller to economize energy.First of all，this dissertation starts from the reason for synchronous motor in low efficientwith different loads， analyzing the relationship of energy consumption and researches thefeasibility of saving energy by adjusting power factor and the influence of stator armaturecurrent control by changing the firing angle. Secondly， PID controller is applied to controlthe firing angle of SCR， in order to realize energy saving control for synchronous motor indifferent loads. Thirdly， DSPTMS320F2812， developed by TI Company in USA， isadopted as the processing core of the controller. After software and hardware of controllerdesigned， and the experiment platform established， I tested all the modules and the wholecontroller， and analyzed the test results in different loads.The results of experiment indicate that the designed energy-saving controller forsynchronous motor performs excellently in software and hardware， responses quickly， andoperates accurately. The research can be testified correctly and the prospective goal achievedsuccessfully.