基于空间矢量算法的三电平逆变器的研究

Research on Three-Level Inverter Based on Space Vector Algorithm

本文设计了一种大功率磁控管驱动电源的结构,采用了三电平逆变器作为磁控管阳极驱动电路的逆变模块。建立了磁控管阳极驱动电路的数学模型。经过数学分析,推导出不同开关状态下磁控管阳极驱动电路的输出电压。在MATLAB中建立了仿真模型,分别采用正弦脉宽调制和空间矢量调制来驱动三电平逆变器,通过仿真数据的对比,从三个方面验证了空间矢量算法的优越性。同时得出了输出电压电流的波形,为后续将此结构应用于微波发生装置提供了理论的基础。

This paper designs a structure of high power magnetron drive power,inverter module using a three-level inverter as a magnetron anode drive circuit.A mathematical model of the magnetron anode drive circuit was established.After mathematical analysis,the output voltage of the magnetron anode drive circuit under different switching states is derived.A simulation model was established in MATLAB,which uses SPWM and SVPWM to drive the three-level inverter.Through the comparison of simulation data,the superiority of space vector algorithm is verified from three aspects.At the same time,the waveform of the output voltage and current is obtained,which provides a theoretical basis for the subsequent application of this structure to the microwave generating device.