Degraded Switching Characteristics of a High-Current, High-Action Reversely Switched Dynistor
Power Electronics, IEEE Transactions (2014)
摘要
High-voltage, high-current, and high-coulomb transfer closing switches are required for many high-pulsed power systems. This letter presents the degraded switching characteristics of a high-power reversely switched dynistor (RSD). The degraded switching characteristics of the RSD were tested with a working voltage of 10 kV, the repetition rate of 0.2 Hz, and a peak current of about 107 kA. The action is about 1.45 MA2·s. The transferred charge and energy per shot are about 20 C and 100 kJ, respectively. Only minimal changes in the leakage current and voltage drop were witnessed after a serial test of 50 000 shots. The degraded switching characteristics of the RSD were investigated based on two different methods with the special parameters of static volt-ampere characteristics and dynamic voltage drop on RSD, respectively. The degraded switching model of RSD under high-current conditions for long-pulse application was established using the method of numerical fitting. The results show that these two methods agree well with each other.
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关键词
electric potential,leakage currents,power semiconductor switches,pulsed power switches,rsd,current 107 ka,degraded switching characteristics,high-action reversely switched dynistor,high-coulomb transfer closing switches,high-pulsed power system,leakage current,numerical fitting,voltage 10 kv,voltage drop,high current,pulsed power,reversely switched dynistor (rsd),solid-state switches
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