Research on the Application of Thyristors in Low Voltage and High Current Parallel Connection
The high power semiconductor thyristor is widely used in the field of high current power supply.In the field of electrolytic power supply,it is necessary to use multiple thyristor in parallel because of the large output current.When the equipment is debugged,low voltage and high current is used for testing,and the test voltage is usually between a few volts to a dozen volts.However,because of the differences between thyristors themselves in turn-on characteristics and the volt-ampere characteristics,the parallel thyristors on the bridge arm are often unable to turn on.The working process of thyristor is studied,and the relevant test and analysis are carried out,and the selection scheme of thyristor parallel application in low voltage and high current is obtained to ensure that all thyristors in paral-lel branches are opened and the current sharing coefficient meets the application requirements.
high currentlow voltageparallel connectionthyristorselection
NETL
NSTL
万方数据
