Three-phase AC Filter Inductor Design for Three-phase PWM Inverter Conversion Efficiency Improvement at Low Load
Three-phase AC Filter Inductor Design for Three-phase PWM Inverter Conversion Efficiency Improvement at Low Load
复制标题
用于提高三相 PWM 逆变器低负载转换效率的三相交流滤波电感器设计
DOI：
10.1002/eej.23053
复制
发表时间：
2018
影响因子：
0.4
通讯作者：
H. Ishii
中科院分区：
文献类型：
--
作者：
H. Matsumori;T. Shimizu;K. Takano;H. Ishii
对三相脉宽调制(PWM)逆变器中三相交流滤波电感的电感损耗进行了计算。首先，设计了一个三相电感，以获得每相相同的电感值。在此基础上，提出了一种采用两种磁性材料的三相电感。对采用常规和改进交流滤波电感的1kVA三相PWM逆变器的转换效率进行了仿真。仿真结果表明，该方法提高了转换效率。最后，对采用常规和改进交流滤波电感的实际三相1kVA PWM逆变器的转换效率进行了测量。在实验中，与传统电感相比，在小功率负载下，该电感的转换效率提高了约1%。此外，电感损耗的计算值与实测值吻合较好。通过仿真和实验验证了算法效率的提高。
The inductor losses in a three‐phase ac filter inductor used in a three‐phase pulse‐width modulation (PWM) inverter are evaluated. First, a three‐phase inductor is designed to obtain the same value of inductance for each phase. Then, based on the design, a three‐phase inductor that uses two magnetic materials is proposed. The conversion efficiency of a 1 kVA three‐phase PWM inverter that uses the conventional and proposed ac filter inductors is simulated. Simulation results show that conversion efficiency improves. Finally, the conversion efficiency of an actual three‐phase 1 kVA PWM inverter that uses the conventional and proposed ac filter inductors is measured. In the experiment, the conversion efficiency obtained for the case of the proposed inductor improves by approximately 1% at low power load as compared to the conventional inductor. Furthermore, the calculated inductor losses are in good agreement with measured losses. Improvement in efficiency is verified trough simulations and experiments.