全双向开关型双级矩阵变换器逆变级容错策略
发布时间：2018-11-22 17:33
【摘要】：整流级逆变级均由双向开关构成的全双向开关型双级矩阵变换器比传统双级矩阵变换器多了6个开关管。新增的6个开关管可作为逆变级冗余器件,且其双向开关结构也为直流母线电压反向提供了可能,两者结合使得全双向开关型双级矩阵变换器能够实现多种故障的容错。该文从调制角度出发,提出了适用于逆变级双向开关单元开路、单管开路、双向开关单元短路以及单管短路等四种故障的容错策略。所提容错策略利用开关管的故障特性,通过增加非故障开关管切换次数以模拟故障开关管的切换,从而实现容错。实验结果验证了文中所提逆变级容错策略的有效性和可靠性。
[Abstract]:The rectifier stage inverter is composed of bidirectional switches. There are 6 more switches in the full bidirectional switching matrix converter than in the traditional two-stage matrix converter. The six new switches can be used as inverter redundancy devices, and their bi-directional switching structure also makes it possible to reverse DC bus voltage. The combination of the two devices makes the full bidirectional switching two-stage matrix converter to be able to achieve a variety of fault tolerance. From the point of view of modulation, this paper presents a fault-tolerant strategy for four kinds of faults, namely, open circuit of inverter level bidirectional switch cell, single switch unit, short circuit of bidirectional switch unit and single switch short circuit. The proposed fault-tolerant strategy utilizes the fault characteristics of the switch tube and simulates the switch of the fault switch tube by increasing the number of switching times of the non-fault switch tube, thus realizing the fault tolerance. Experimental results demonstrate the effectiveness and reliability of the proposed inverter level fault-tolerant strategy.
【作者单位】： 江苏省新能源发电与电能变换重点实验室(南京航空航天大学);
【基金】：国家自然科学基金项目(51177069)~~
【分类号】：TM46
本文编号：2350067
[Abstract]:The rectifier stage inverter is composed of bidirectional switches. There are 6 more switches in the full bidirectional switching matrix converter than in the traditional two-stage matrix converter. The six new switches can be used as inverter redundancy devices, and their bi-directional switching structure also makes it possible to reverse DC bus voltage. The combination of the two devices makes the full bidirectional switching two-stage matrix converter to be able to achieve a variety of fault tolerance. From the point of view of modulation, this paper presents a fault-tolerant strategy for four kinds of faults, namely, open circuit of inverter level bidirectional switch cell, single switch unit, short circuit of bidirectional switch unit and single switch short circuit. The proposed fault-tolerant strategy utilizes the fault characteristics of the switch tube and simulates the switch of the fault switch tube by increasing the number of switching times of the non-fault switch tube, thus realizing the fault tolerance. Experimental results demonstrate the effectiveness and reliability of the proposed inverter level fault-tolerant strategy.
【作者单位】： 江苏省新能源发电与电能变换重点实验室(南京航空航天大学);
【基金】：国家自然科学基金项目(51177069)~~
【分类号】：TM46
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