Abstract
This paper focuses on thyristor in the aspects of its junction temperature, its zero di/dt, its forward current IT and its reverse voltage Vr, and presents in-depth study of internal factors which cause commutation failure of the valve. This paper puts forward the optimal configuration approach to the factors above, reduces various improvement measures to induce thyristor turn off time. A physical test platform of the shutdown characteristics is built. By testing the shutdown characteristics of thyristor, the linear regression analysis method is used to get the fitting formula of the thyristor turn off time.
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Acknowledgements
This work was supported by National Power Grid Corp science and technology project: Study on Ultra High Voltage Bypass Impedance Topology.
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Zhang, Z., Zhang, L., Shou, Z., Jin, Y., Tan, Y. (2018). Test and Regression Analysis of Dynamic Shutdown Characteristic of High Power Thyristor. In: Jia, L., Qin, Y., Suo, J., Feng, J., Diao, L., An, M. (eds) Proceedings of the 3rd International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2017. EITRT 2017. Lecture Notes in Electrical Engineering, vol 482. Springer, Singapore. https://doi.org/10.1007/978-981-10-7986-3_33
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DOI: https://doi.org/10.1007/978-981-10-7986-3_33
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