There are 6 modes in the full working state of a traditional 3-phase rectifier, and each mode is necessary for power factor correcting and for realizing the corresponding DC-link voltage. It is obvious that too many modes in the full working state increase the switch stresses, which results in high switching loss and increased economic cost. Reducing the number of working modes is a feasible solution to solve this problem. By improving the m-mode controllability in inverters, a 3-mode control strategy is derived for the traditional 3-phase rectifier to enhance its operational features. Note that the proposed control strategy can maintain a high-power factor above 0.99 and have higher efficiency when compared with the traditional control strategy. Finally, a lab-prototype with a load varying from 800 W to 4 kW is conducted to validate the feasibility of the proposed control strategy. Experimental results show that all of the tested cases have a 0.99 power factor and that highest efficiency of 96.7%. The results also reveal that the proposed strategy is superior to the traditional one in laboratory conditions. In addition, the proposed method is generalized and can be extended to other rectifier topologies.

中文翻译：

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4 kW 三相整流器，通过 3 模式 SVPWM 实现高效率和宽工作范围

传统三相整流器在全工作状态下有6种模式，每种模式都是功率因数校正和实现相应的直流母线电压所必需的。很明显，在全工作状态下太多的模式会增加开关应力，从而导致高开关损耗和增加经济成本。减少工作模式的数量是解决这一问题的可行方案。通过提高逆变器的m模可控性，为传统的三相整流器推导出一种三模控制策略，以增强其运行特性。请注意，与传统控制策略相比，所提出的控制策略可以保持 0.99 以上的高功率因数并具有更高的效率。最后，进行负载从 800 W 到 4 kW 的实验室原型，以验证所提出的控制策略的可行性。实验结果表明，所有测试案例的功率因数均为0.99，最高效率为96.7%。结果还表明，所提出的策略在实验室条件下优于传统策略。此外，所提出的方法是通用的，可以扩展到其他整流器拓扑。