摘要
针对矩阵变换器双电压控制策略的简化进行了深入研究,将占空比系数的合成进行规律化,总结出占空比系数的一般表达式,该表达式适用于所有输入、输出相区组合。在分析原点开关的基础上,提出一个表示输入电压极值相正负极性的中间变量,制定输出新区新的划分原则,使新输出相区数目仅是传统输出相区数目的一半,并给出在新相区下占空比系数表达式变量的选择依据。简化控制策略无需进行复杂的输入、输出相区组合。搭建原理样机,用实验验证了简化控制策略的正确性与可行性。
Control strategy simplification of input line-toline voltage was researched. Composition rule of duty ratios was simplified, and the general expression of duty ratios composition was summarized. The expression was suitable for all sector combination. A new intermediate variable to express the extremal polar of input voltages was proposed by analyzing the source key theory. Principle to divide output sectors was established. The new method to detect the sector of output voltages made new sector number reduce half, and how to select variable of expression was mentioned also. Simplified control strategy did not need to carry on the complex sector combination. Validity of the simplified control strategy was verified by experiments.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第36期23-27,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50777029)~~
关键词
矩阵变换器
双电压
占空比系数
相区组合
简化控制策略
matrix converter
input line-to-line voltages
duty ratios
sector combination
simplified control strategy
