一种全桥直流变压器抑制偏磁方法研究
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摘要
随着大功率直流输电和直流分布式供电系统的发展,直流变压器得到了广泛应用和研究。在最大占空比下,直流变压器中高频变压器偏磁问题影响着直流变压器工作。因此,在简述功率变压器偏磁产生机理的基础上,研究了一种带偏置电压互补驱动偏磁抑制闭环控制方法。该方法不但能够实现尽可能大的占空比,而且能够抑制变压器偏磁。实验结果表明,该偏磁抑制方法是正确可行的。
With the development of high-power DC transmission and DC distributed power supply system,DC transformer has been widely used and studied. At the maximum duty cycle,the magnetic bias of medium and high frequency transformers affects the operation of DC transformers. Therefore,based on a brief description of the mechanism of magnetic bias in power transformer,a closed-loop control method of magnetic bias suppression driven by complementary bias voltage is studied. This method can not only achieve the maximum duty cycle,but also restrain the magnetic bias of transformer. The experimental results show that the method is correct and feasible.
With the development of high-power DC transmission and DC distributed power supply system,DC transformer has been widely used and studied. At the maximum duty cycle,the magnetic bias of medium and high frequency transformers affects the operation of DC transformers. Therefore,based on a brief description of the mechanism of magnetic bias in power transformer,a closed-loop control method of magnetic bias suppression driven by complementary bias voltage is studied. This method can not only achieve the maximum duty cycle,but also restrain the magnetic bias of transformer. The experimental results show that the method is correct and feasible.
引文
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[3]Shigenori I,Hirofumi A.A Bidirectional Isolated DC-DC Converter as a Core Circuit of the Next-Generation MediumVoltage Power Conversion System[J].IEEE Transactions on Power Electronics,2007,22(2):535-542.
[4]张先进,陈杰,龚春英.直流变压器研究[J].高电压技术,2009,35(5):1144-1149.
[5]张先进,陈杰,龚春英.输入串联输出并联直流变压器[J].南京航空航天大学学报,2010,42(1):30-36.
[6]张先进.输入串联输出并联直流变压器控制研究[J].电力电子技术,2011,445(2):91-93.
[7]罗建武,罗文杰.偏磁的起因和消除方法[J].电工技术学报,1999,14(6):73-77.
[8]赵修科,高自强.全桥变换器中输出变压器偏磁的调节[J].南京航空航天大学学报,1995,27(6):842-845
[9]白平,张代润.PWM变换器中输出变压器偏磁的抑制[J].电源技术应用,2004,7(11):668-671.
[10]杜责平,陈立军,张波,等.全桥逆变器高频功率变压器偏磁问题研究[J].电力电子技术,2006,40(3):74-76.
[11]刘刚,张东来,曾建友.单相桥式逆变电路变压器直流偏磁研究与抑制[J].电力电子技术,2006,40(3):77-79.
[12]John B,Bruce T,Mark S R.FilterPro MFB and SallenKey Low-Pass Filter Design Program[R].Application Report SBFA001A-November,2011.
[2]刘闯,何达成,徐鑫哲.面向直流配电网尾端功率变换的组合式直流变压器研究[J].电力自动化设备,2018,38(7):43-50.
[3]Shigenori I,Hirofumi A.A Bidirectional Isolated DC-DC Converter as a Core Circuit of the Next-Generation MediumVoltage Power Conversion System[J].IEEE Transactions on Power Electronics,2007,22(2):535-542.
[4]张先进,陈杰,龚春英.直流变压器研究[J].高电压技术,2009,35(5):1144-1149.
[5]张先进,陈杰,龚春英.输入串联输出并联直流变压器[J].南京航空航天大学学报,2010,42(1):30-36.
[6]张先进.输入串联输出并联直流变压器控制研究[J].电力电子技术,2011,445(2):91-93.
[7]罗建武,罗文杰.偏磁的起因和消除方法[J].电工技术学报,1999,14(6):73-77.
[8]赵修科,高自强.全桥变换器中输出变压器偏磁的调节[J].南京航空航天大学学报,1995,27(6):842-845
[9]白平,张代润.PWM变换器中输出变压器偏磁的抑制[J].电源技术应用,2004,7(11):668-671.
[10]杜责平,陈立军,张波,等.全桥逆变器高频功率变压器偏磁问题研究[J].电力电子技术,2006,40(3):74-76.
[11]刘刚,张东来,曾建友.单相桥式逆变电路变压器直流偏磁研究与抑制[J].电力电子技术,2006,40(3):77-79.
[12]John B,Bruce T,Mark S R.FilterPro MFB and SallenKey Low-Pass Filter Design Program[R].Application Report SBFA001A-November,2011.