| 引用本文: | 王晓远,吕海英,祝黎辉.PWM逆变器中新型共磁芯滤波器的设计与应用[J].电力自动化设备,2016,36(2): |
| WANG Xiaoyuan,LÜ Haiying,ZHU Lihui.Design and application of inductors with shared magnetic core for PWM inverter[J].Electric Power Automation Equipment,2016,36(2): |
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| 摘要: |
| LCL无源滤波器常与逆变器串联用来抑制逆变器产生的开关频率附近的高次电流谐波。为了降低无源滤波器的成本和体积，提出一种新型的应用于LCL滤波器的共磁芯电感，即网侧电感与逆变器侧电感共用1个磁芯。这种结构的滤波电感与独立结构的LCL滤波电感相比体积更小、成本更低且具有较好的滤波效果。理论推导与仿真实验结果验证了新型滤波电感的有效性。 |
| 关键词: 滤波器 LCL滤波器 PWM 逆变器 共磁芯电感 谐波抑制 |
| DOI： |
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| Design and application of inductors with shared magnetic core for PWM inverter |
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WANG Xiaoyuan, LÜ Haiying, ZHU Lihui
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School of Electrical Engineering and Automation，Tianjin University，Tianjin 300072，China
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| Abstract: |
| The passive LCL filter is often connected in series with the inverter to suppress the high-order harmonic currents near the switching frequency. In order to reduce its cost and size，a type of LCL filter with shared magnetic core is proposed，i.e. the grid-side inductor and the converter-side inductor share a common magnetic core. Compared with the traditional LCL filter of discrete inductors，the proposed type has smaller inductor size，lower cost and better filtering effect. The theoretical deduction and simulative results verify its effectiveness. |
| Key words: electric filters LCL filter pulse width modulation electric inverters inductors with shared magnetic core harmonics suppression |
