摘要
为解决NPC三电平逆变器传统SVPWM调制方法在低调制比时输出电流谐波大的问题,提出基于60°坐标系下改进的一种空间电压基本矢量排序方式。该方法在第1、2小扇区采用零矢量作为首发矢量,降低相电流波形畸变的同时提高对中性点电压的平衡控制能力。最后通过搭建Simulink仿真模型验证该方法的有效性。
An improved space basic vector ordering method based on 60°coordinate system is proposed to solve the problem that the output current harmonics of traditional SVPWM modulation method of NPC three-level inverter are high at low modulation ratio.Zero vector is used as the first vector in the first and second small sectors,which reduces the distortion of phase current waveform and improves the balance control ability of neutral voltage.Finally,the effectiveness of the proposed method is verified through Simulink simulation.
作者
徐亚美
曾频
苗强
XU Yamei;ZENG Pin;MIAO Qiang(Weichai Power Co.,Ltd.,Weifang 261061,China)
出处
《汽车电器》
2023年第11期43-45,共3页
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