| 引用本文: | 程启明,陈路,程尹曼,李涛,孙伟莎.三电平直接矩阵变换器的SVPWAM策略[J].电力自动化设备,2019,39(6): |
| CHENG Qiming,CHEN Lu,CHENG Yinman,LI Tao,SUN Weisha.SVPWAM strategy of three-level direct matrix converter[J].Electric Power Automation Equipment,2019,39(6): |
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| 摘要: |
| 三电平直接矩阵变换器(TLDMC)与常规矩阵变换器(MC)相比，能够大幅降低输出波形总谐波畸变率和开关应力；与现有的多电平交直交型变换器相比，其在减少开关数量和降低开关损耗方面更具优势。提出了针对TLDMC的空间矢量脉宽幅值调制(SVPWAM)策略，该策略通过消除每个扇区的零矢量，能够降低开关频率，并提高电压利用率。根据TLDMC的拓扑，论证TLDMC的间接调制模型；针对TLDMC的调制，将虚拟整流器由零矢量调制改进为SVPWAM，虚拟逆变器采用虚拟空间矢量脉宽调制(VSVPWM)。仿真和实验结果验证了所提方法的正确性。 |
| 关键词: 三电平直接矩阵变换器 虚拟整流器 空间矢量脉宽幅值调制 虚拟空间矢量脉宽调制 |
| DOI：10.16081/j.issn.1006-6047.2019.06.006 |
| 分类号:TM46 |
| 基金项目:国家自然科学基金资助项目(61573239)；上海市电站自动化技术重点实验室项目(13DZ2273800) |
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| SVPWAM strategy of three-level direct matrix converter |
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CHENG Qiming1, CHEN Lu1, CHENG Yinman2, LI Tao1, SUN Weisha1
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1.College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China;2.North Power Supply Branch, State Grid Shanghai Electric Power Company, Shanghai 200041, China
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| Abstract: |
| Compared with conventional MCs(Matrix Converters),TLDMC(Three-Level Direct Matrix Converter) can reduce the output voltage total harmonic distortion and switching stress. On the other hand, the TLDMC is advantageous to the existing multi-level AC-DC-AC converter in terms of reduced switching count and lowered losses. The SVPWAM(Space Vector Pulse Width Amplitude Modulation) for TLDMC is presented. By eliminating the zero vector of each sector, the switching frequency can be reduced and the voltage transfer ratio can be improved. According to the topology of TLDMC, the indirect space vector modulation is demonstrated. For the modulation of TLDMC, the zero vector modulation of virtual rectifier is improved to SVPWAM, and VSVPWM(Virtual Space Vector Pulse Width Modulation) is employed in the virtual inverters. Finally, simulative and experimental results verify the effectiveness of the proposed approach. |
| Key words: Three-Level Direct Matrix Converter(TLDMC) virtual rectifier converter Space Vector Pulse Width Amplitude Modulation(SVPWAM) Virtual Space Vector Pulse Width Modulation(VSVPWM) |
