Frequency Methods for Synthesizing a Control System for Semiconductor Converters

摘要

The frequency methods for synthesis of regulation of semiconductor converters feeding mechatronic modules are proposed. The stages of synthesis of current control loops and electromagnetic torque are considered. Based on experimental methods, a mathematical model of the torque control loop is proposed, which was used at the synthesis stage of the torque control loop. The proposed generalized methods for the synthesis of current control loops, electromagnetic torques based on the method of experimental frequency characteristics can be used on technological objects where the study of frequency characteristics is allowed without violating the conditions of the technological process. So, the proposed technique was successfully applied at the objects of drilling rigs when adjusting the electric drive of a drilling rig. The proposed technique has made it possible to refine and improve the speed of the EMC regulation loop by about 20%. It is established, that an experimental technique for determining the frequency characteristics of CCL has been proposed and tested, which makes it possible to evaluate the capabilities of CCLs of various electric drives, and also indicates the possibilities for expanding the band of uniform transmission of the frequencies of the CCLs under investigation. On the other hand, the extension of the band of uniform transmission of CCL allows increasing the limiting values of the rotational speed of the motor. This allows you to raise the speed of powerful compressor units without the use of multipliers to 6000 - 9000 rpm.