CAJ | 학술논문

中点箝位式三电平逆变器采用传统空间矢量调制算法时，需要进行大量的三角函数运算和扇区判断，对处理器的要求较高，针对传统空间矢量控制算法计算量较大的问题，采用基于60°坐标系的空间矢量脉宽调制方法，此方法可以省去传统算法中的大量三角函数运算，节省了处理器的控制资源。针对三电平中点电压不平衡的问题，采用基于功率平衡算法，通过仿真和实验验证，该方法对中点电压不平衡有很好的抑制作用。
중점겸위식삼전평역변기채용전통공간시량조제산법시，수요진행대량적삼각함수운산화선구판단，대처리기적요구교고，침대전통공간시량공제산법계산량교대적문제，채용기우60°좌표계적공간시량맥관조제방법，차방법가이성거전통산법중적대량삼각함수운산，절성료처리기적공제자원。침대삼전평중점전압불평형적문제，채용기우공솔평형산법，통과방진화실험험증，해방법대중점전압불평형유흔호적억제작용。
The traditional space vector modulation algorithm using on N PC (neutral point clamped) three level inverter need a large number of trigonometric function calculations and sector judgment, and higher demands on the processor. For these problems, space vector pulse width modulation method (SVPWM) is applied on 60° coordinate system, this method can save a large number of trigonometric function calculations in traditional algorithm and the control resources of processors. Aiming at the unbalance problems of neutral point voltage on three-level, the power balance algorithm is used. The simulation and experiments verify that this method has good inhibitory effect on neutral point voltage unbalance.