| 船舶大功率AC-DC变换器阻容缓冲器优化方法 |
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| 引用本文： | 赵凯岐,张殿华,兰海,岳文杰,张强.船舶大功率AC-DC变换器阻容缓冲器优化方法[J].中国造船,2011,52(2). |
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| 作者姓名： | 赵凯岐 张殿华 兰海 岳文杰 张强 |
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| 作者单位： | 哈尔滨工程大学,哈尔滨,150001 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助，哈尔滨市科技创新基金 |
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| 摘 要： | 船舶电力推进系统大功率AC-DC变换器设计时,必须在晶闸管的两端并联阻容缓冲器,以吸收器件关断过程反向恢复电流的能量,抑制高的过电压冲击及高的电压应力du/dt.但是,阻容参数的设计大多依靠经验公式,参数选取有时产生很大偏差,一旦选取不合理,便会产生很高的尖峰过电压,造成电力电子器件的损坏,影响系统安全运行.针对大功率AC-DC变换器晶闸管阻容缓冲器进行研究,提出了阻容缓冲器优化设计方法,推导出较精确的阻容参数值和电阻的功率,提高大功率AC-DC变换器的可靠性,仿真及实验验证了本方法的可行性.
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| 关 键 词： | 电力推进 变换器 缓冲器 晶闸管 |
Optimum Method for RC Snubber of High-Capacity AC-DC Converter in Ship Electric Propulsion System |
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| ZHAO Kaiqi,ZHANG Dianhua,LAN Hai,YUE Wenjie,ZHANG Qiang.Optimum Method for RC Snubber of High-Capacity AC-DC Converter in Ship Electric Propulsion System[J].Shipbuilding of China,2011,52(2). |
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| Authors: | ZHAO Kaiqi ZHANG Dianhua LAN Hai YUE Wenjie ZHANG Qiang |
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| Institution: | ZHAO Kaiqi,ZHANG Dianhua,LAN Hai,YUE Wenjie,ZHANG Qiang (Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | In design process of high-capacity AC-DC converter in ship electric propulsion system,the RC snubber circuit should be connected to the thyristor in parallel in order to absorb the energy generated at the moment of thyristor switching and suppress overvoltage impulses and high voltage change rate du/dt.However,parameter selection,which is generally depended on empirical formula,sometimes leads to a rather great error.Once the selection of protection parameters is unreasonable,a high spike voltage is likely ... |
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| Keywords: | electric propulsion power converter snubber thyristor |
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