The Performance Characteristics Detection And Analysis Of Brushles Synchronous Motor

With high power factor and efficiency, the synchronous motor is widely used in industrial areas. Particularly, in the area of the water conservancy, the metallurgy, and the chemical industry, the number of using synchronous motors is rising rapidly in future; the market demand of synchronous motor is great.The excitation system of synchronous motor is the core components for its normal work. Based on the situation of excitation of synchronous motor in our country, this paper gives me a design for a brushless synchronous digital excitation system-wide intelligent. This article introduces the basic concepts of synchronous motor, principle of excitation for synchronous motor. It focuses on the exciting in towards polarity of synchronous motor, the principles of deexcitation, testing of frequency and three excitation modes. Especially analysis many kinds of detailed failures of the synchronous electromotor about the rotating rectifier, and the corresponding harmonic waves will come forth in the direct current of the rotating rectifier with the corresponding failure's appearance. in order to measure the failures quickly and expediently on the stator's cables side of the motor, this paper shows me that the relationship between the rotating rectifier with AC pulse voltage and the pulse voltage on the stator side which is induced by the magnetic field. After that we use an example to explain this process.This paper includes seven chapters, in the front four chapters, it say something about the synchronous electromotor, in the fourth chapter, it give me the corresponding harmonic waves of the detailed failures of the synchronous electromotor, the fifth analysis something about electromotor. The last three chapters show me the achievement of the hardware and the software.