Research on the Soft-Switching of Solid-State Transformer End-Side
作者单位：State Grid Liaoning Electric Power Research InstituteState Grid School of Information Science and EngineeringNortheastern University
会议名称：《第32届中国控制与决策会议》
会议日期：2020年
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学]
关 键 词：Soft-switching Solid-state transformer(SST) Auxiliary resonant commutated pole inverter(ARCPI) Zero voltage switching(ZVS) Zero current switching(ZCS)
摘 要：Aiming at overcoming the problem that the switching loss of the solid-state transformer（SST） increases greatly at high frequency,the auxiliary resonant commutated pole inverter（ARCPI） is used to achieve soft-switching and improve the efficiency of the SST ***,compared to the hard-switching inverter,the ARCPI contains two additional auxiliary commutation circuits（ACCs）,which will increase the cost and volume of *** reduce unnecessary ACC,a novel ARCPI topology and its simplified modulation strategy is proposed in this *** bidirectional switches are used to ensure that the ACC can provide soft-switching conditions for high frequency bridge leg at any *** on the single polarity PWM modulation strategy,an ACC of one phase bridge leg is omitted,thus the efficiency of the ARCPI is improved and the cost is ***,the simulation model is built and the results validate the effectiveness of the analysis in this paper.