VIENN整流器單周控制輸出電壓波動機理分析及改進

摘要：本文在深入分析已有VIENN整流器使用單周控制時，輸出總電壓波動及輸出電壓不平衡的原因的基礎上，提出了一種新的控制方法,將單周控制對功率因數校正電路解耦的思想與滯環電流控制相結合。與原有方法相比，對電感等器件要求低，控制電路比較簡單，并且能夠很好地實現輸出電壓的平衡，可靠地對電路進行控制，解決單周控制在某些時候輸出電壓不穩定的情況。計算及仿真結果均證明它可以較好地改善電路的性能。 敘詞：VIENN整流器 串連雙Boost 單周控制 Abstract：This paper, on the basis of an in-depth analysis of the existing theories of the VIENNA rectifier, makes a careful study of the practical VIENNA rectifier working state and carry out a new control method. Compared with traditional one-cycle and hysteresis control method, the circuit is much simple and the requirement of the elements such as inductance is much lower, it can realize the balance of the output voltage. The new method can perform the rectifier very much without complicating the control circuit. In the end, this paper presents some computation and simulation results, all of which show that these two improvements are useful. Keyword：three-phase three-switch three-level series-connected dual-boost one-cycle control