摘要
文章在分析三电平逆变器空间矢量脉宽调制（SVPWM）的基础上，采用了一种基于非正交坐标系下的SVPWM调制策略。该调制策略将传统的直角坐标系转换为非正交的60°坐标系。优化后的调制策略，降低了系统仿真模型的复杂程度，避免了大量的三角函数计算，节约了运算时间，更容易数字实现，并在Matlab／Simulink仿真环境中建立了三电平逆变器控制系统的仿真模型，对三电平逆变器60°坐标系下的SVPWM算法进行了仿真研究，仿真结果验证了该算法的有效性。
This paper is based on the analysis of space vector pulse width modulation （SVPWM） for three-level inverter. Using a SVPWM modulation strategy under the non-orthogonal coordinate. The orthogonal coordinate is converted to the 60°non-orthogonal coordinate in this modulation strategy. The complexity of the simulation model is reduced, the large number of trigonometric function operator is avoided, the operation time is saved and the digital realization is easier than before according to the optimized modulation strategy. The simulation model of three-level inverter is established in the Matlab/Simulink environment. Simulation study on SVPWM algorithm under the 60° coordinate for three-level inverter and the resuhs verify the validity of this algorithm.
出处
《电光系统》
2013年第1期42-46,共5页
Electronic and Electro-optical Systems
