High-injection System in Sensorless Model Definition Angular Position Rotor Synchronous Motor
The article deals with sensorless method for determining the angular position of the rotor of a synchronous motor by means of superimposing a high-frequency signal. The essence of the method is that a high frequency signal excites the voltage or current, which contain information-rotor position. Signal processing techniques can estimate the rotor position by using appropriate methods. The pros and cons of the use of such systems to replace systems using rotor position sensor are presented. Among the advantages of the use of sensorless systems, noted the following: improving the reliability of the electric system, reducing the cost of the drive, improving the weight and dimensions. The area of ​​the application of the species of the drive is showed. Circuit laboratory stand for experimental are powered-on. A derivation of the formula for the calculation of the angular decomposition in the rotor of a synchronous motor. Data obtained during the experiment for determining the angular position sensorless is analyzed. Findings allow us to conclude to reduce the cost and size of the system for determining the angular position and increase its reliability are presented.