【摘要】 该文提出了一种基于空间矢量调制矩阵变换器的闭环控制方法。该方法根据矩阵变换器的实际输出电压与期望输出电压的大小,计算其对应的旋转电压空间矢量间的偏差,并将此偏差作为负反馈加到下一采样周期的开关调制矩阵中,从而实现系统的闭环控制。文中通过理论推导,给出算法的具体实现方法。利用该文提出的闭环控制方法,可保证矩阵变换器的输出电压很好地跟随给定的期望电压,并可有效地抑制矩阵变换器输出电压及输入电流波形的畸变。仿真结果验证了理论分析的正确性。更多还原

【Abstract】 A closed-loop control method for the matrix converter based on space vector modulation is proposed in this paper. The discrepancy between the rotating space vector of voltages is calculated according to the discrepancy between the actual output voltage and expected output voltage of the matrix converter. The obtained discrepancy is added as feedback to the switch modulation matrix of the next sampling period to realize the closed-loop control . Theoretical deduction and actual realizing method are given in the paper. The proposed close-loop control method can ensure the output voltage follow the reference voltage very well, and it can suppress distortion of the waveforms of the output voltages and input currents effectively. The validities of the theoretical analysis are demonstrated by simulation.更多还原