DIGITAL CONTROL SYSTEM OF A CIRCULATING CURRENT CYCLOCONVERTER-FED DRIVER WITH REACTIVE POWER CONTROL

摘要

In this paper, the relationship between circulating current and reactive power of cycloconvert- er-fed driver system is analyzed and developed, the principle of reactive power detection and control is introduced, then a digital vector control system of a circulating cycloconverter-fed asynchronous machine is presented, which uses the reactive power control method based on the regulation of circulating cur- rent. Simulations show the good effect of reactive power control and the high performance of the sys- tem.