Vector-Pulse Control Principle of AC Motors

Abstract

Vector-pulse control principle of AC electric drives was considered. The way to realize this method of regulation was proposed. One way of start electric drive is eliminate the negative half the time, for which the motor must be disconnected from the network at some point in time. Detection of the interlinkage vector of rotor is required only at those times when the stator is disconnected from the supply voltage since implementing vectorpulse control. In this case, position the interlinkage vector of rotor and the interlinkage vector of stator matches. The factors to influence interlinkage vector of stator and rotor were analyzed. The influence of generalized vector voltage and current on the angle interlinkage vector of stator was proposed. At the end of the article was proposed the advantages of vector pulse-start method in comparison with other methods of starting motors.

Keywords: electric drive start, interlinkage vector of stator, interlinkage vector of rotor.