| 引用本文: | 方朝林,许志红.基于IGBT混联闭环控制策略的无弧智能直流接触器[J].电力自动化设备,2019,39(1): |
| FANG Chaolin,XU Zhihong.Arcless intelligent DC contactor based on IGBT hybrid connection closed-loop control strategy[J].Electric Power Automation Equipment,2019,39(1): |
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| 摘要: |
| 针对机械开关分断电弧造成的触头烧损问题，提出一种基于IGBT混联闭环控制策略的无弧智能直流接触器。以单管IGBT混联的方式，实现直流接触器无弧分断，同时规避了采用IGBT模块体积大、成本高的缺陷。在相应的缓冲电路基础上，辅以静态均流闭环控制策略，解决了IGBT混联造成的串联不均压和并联不均流问题，实现了IGBT的高效利用，保证触头可靠无弧分断和系统的安全稳定性。在此基础上，通过理论分析得到了缓冲电路参数的相关约束方程，为电路优化提供理论依据，进一步减小了控制模块的成本和体积。实验结果证明所提控制方案简单有效，并具备良好的通用性。 |
| 关键词: 无弧 智能直流接触器 IGBT 混联 闭环控制 |
| DOI：10.16081/j.issn.1006-6047.2019.01.007 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(51277031)；福建省自然科学基金资助项目(2015J01192)；福建省科技厅产学合作项目(2016H6008) |
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| Arcless intelligent DC contactor based on IGBT hybrid connection closed-loop control strategy |
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FANG Chaolin, XU Zhihong
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School of Electrical Engineering, Fuzhou University, Fuzhou 350116, China
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| Abstract: |
| Arcless intelligent DC contactor based on IGBT hybrid connection closed-loop control strategy is proposed to solve the problem of contact burning loss caused by breaking arc of mechanical switches. The arcless breaking of DC contactor is realized in the way of single tube IGBT hybrid connection, which avoids the defects of large volume and high cost of IGBT modules. Based on the corresponding buffer circuit, the static current balance closed-loop control strategy is adopted to solve the problem of voltage imbalance and current imbalance caused by IGBT hybrid connection, which realizes the high utilization rate of IGBT and guarantees the reliable arcless breaking and stability of system. On this basis, the relevant constraint equations of the buffer circuit parameters are obtained by theoretical analysis, which provides the theoretical basis for the circuit optimization and further reduces the cost and volume of the control module. Experimental results show that the proposed control scheme is simple and effective, and has good versatility. |
| Key words: arcless intelligent DC contactor Insulated Gate Bipolar Transistors(IGBT) hybrid connection closed-loop control |
