Digital Output Phase Locked Technology for UPS Based on Asynchronous Frequency Conversion Modulation Algorithm
LIU Zhanglong
ZHAO Xucheng
XU Hua
YANG Yang
Abstract：In order to improve the efficiency and stability of inverter power and AC phase locked output in UPS system and reduce the impact of inverter /AC output switching on UPS system and load ,and speed up the switching speed .An asyn‐chronous modulation digital frequency conversion algorithm for frequency converter is proposed and a digital inverter phase locked control algorithm based on DSP is designed .A new digital inverter phase locked technology for UPS based on asyn‐chronous frequency conversion modulation algorithm is realized .The experiment result shows that the design of the UPS dig‐ital inverter phase locked technology can achieve high efficiency ,reliability ,high precision of phase locked ,and the inverter pulse width output is stable .
Keywords：asynchronous frequency conversion modulationUPSphase lockedDSP
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1895-1898 )