电力系统保护与控制Issue(10)：111-117,7.
矩阵变换器两种调制策略的比较与分析
Comparison between two modulation methods of matrix converter
摘要
Abstract
The space vector modulation (SVM) and double line voltage modulation (DLVM) for matrix converter are compared. The two modulations are proved to have the same duty-cycle. DLVM is a special modulation sequence of SVM which has one zero-vector in the middle of modulation sequence. Both two modulations can detect unbalanced input voltage real-time and generate balanced output voltage. But SVM with suitable zero vectors can further eliminate short PWM pulses and compensate output voltage at low modulation index. The switching loss of the two modulations is analyzed. The high differential voltage consists in the middle of the SVM modulation subsequence which will cause high switching loss in the commutation before or after the high differential voltage. However, DLVM has lower switching loss than SVM because DLVM modulates according to the order of the magnitude of the input voltages. The choice between SVM and DLVM depends on request of eliminating short PWM pulses or reducing switching loss. The two modulations can be alternatively used to show both merits. <br> This work is supported by National Natural Science Foundation of China (No. 51007094).关键词
矩阵变换器/空间矢量调制法/双电压调制法/窄脉冲/输入不平衡/开关损耗Key words
matrix converter/space vector modulation/double line voltage modulation/short PWM pulse/unbalanced input/switching loss分类
信息技术与安全科学引用本文复制引用
蔡巍,张晓锋,乔鸣忠,何必,朱鹏..矩阵变换器两种调制策略的比较与分析[J].电力系统保护与控制,2013,(10):111-117,7.基金项目
国家自然科学基金(51007094) （51007094）
