Quantization algorithm of double-variable control AC-AC converter
Abstract：The angle α and the pulse width β of SCR are accurate parameters used in Double-Variable Control Theory （TVCT） AC-AC VVVF system. This paper introduces the fundamental principle of TVCT and puts for- ward a quantization algorithm of the angle α and the pulse width β. Using the TVCT and the quantization algo- rithm, the converter does not need a device for zero-crossing detection. Due to the inherent complexity along with high accuracy and good real time requirements of AC-AC VVVF system, one kind of frequency variable speed regulating control system based on microprocessor and CPLD is designed. The system based on the quantization algorithm is implemented. Finally, the corresponding experiment results of the system are corried to out verify the validity of the presented scheme.
Keywords：phase-controlled theoryTVCTquantization algorithmAC-AC converter
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 196-200 )