作　　者： ; ; ; ; ;

机构地区： 广东工业大学自动化学院

出　　处： 《广东电力》 2012年第9期10-15,共6页

摘　　要： 为抑制矩阵变换器(matrix converter,MC)输出电压及输入电流波形的畸变,提出一种空间矢量调制滑模变结构闭环控制方法。建立并简化了MC的状态空间模型,以开关规律和受控输出电压为变量设计滑模面。选择空间矢量形式,计算修正后电压空间幅值偏差以及矢量扇区角的幅角偏差,根据MC的实际输出电压和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,将此偏差通过滑模控制器处理后,作为负反馈加到下一采样周期的开关调制矩阵中,实现系统的闭环控制。利用MATLAB/Simulink仿真验证了该控制系统的正确性。 To suppress the distortion of the output voltage a space vector modulation sliding mode variable structure and input current waveform of matrix converter （MC）, proposed closed-loop control method. Establish and simplify the state space model of the MC, design the sliding surface based of switching rules and the controlled output voltage, ensure that the system can quickly reach the sliding mode motion stage. Select the space vector form, calculate the amplitude deviation after correction of the voltage space and pieces of angular deviation after correction in the angle of the vector sector. According to the size of the actual output voltage and the desired output voltage of the MC, calculate the corresponding deviation between the rotating voltage space vector, after dealing with this deviation by the sliding mode controller, added it to the switch modulation matrix of the next sampling period as a negative feedback, achieve the closed-loop control of the system. The correctness of the control system is analyzed by using the Simulink of the Matlab software simulation.

关 键 词： 空间矢量调制 矩阵变换器 滑模变结构 闭环控制 采样周期 开关规律

领　　域： [自动化与计算机技术] [自动化与计算机技术] [电气工程]