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《Transactions of China Electrotechnical Society》 2012-01
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Research on the SVPWM Solid State Transformer Applied in Smart Micro-Grid

Zhang Mingrui Liu Jinhui Jin Xin(Tongji University Shanghai 200092 China)  
SST is the fundamental component of the innovative smart micro-grid future renewable electric energy delivery and managementl(FREEDM) proposed by NC State University.In this paper,the operating mode,system function and topology of SST are analyzed from the FREEDM's overall system objectives.A three phase SST model based on Chinese power system parameters is built.The control strategies of input AC-DC rectifier,DC-DC converter and output DC-AC inverter are illustrated respectively,and SVPWM control technique is adopted to strengthen SST's performance.Simulation results demonstrate that the SST can exchange energy with grid smoothly while operating under a unit power factor condition.The low voltage wave is a perfect sine curve.The SST has good stability when heavy disturbances occur.This paper will play a constructive role in promoting the FREEDM research in China.
【Fund】: 教育部留学回国人员科研启动基金(08002410012);; 中央高校基本科研业务费专项资金(0800219169)资助项目
【CateGory Index】: TM76;TM41
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