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《Journal of Shanghai Jiaotong University》 2005-S1
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Research on an Improved Basic Step Inverter Topology

ZHAO Hong, PAN Jun-min(Dept. of Electrical Eng., Shanghai Jiaotong Univ., Shanghai 200030, China)  
A novel multilevel inverter topology that improves the basic step inverter topology was presented. The methods for harmonic elimination and magnitude control of the output waveform of the inverter were discussed. The inverter has n DC separated power sources, 2n+4 switches to create 2n+1 levels. The inverter has low switch frequency and high efficiency as usual multilevel inverter. It uses less semiconductor switches and eliminates the shortcomings of the basic step inverter such as voltage distortion under inductor load, unbalanced power source output. It is expected to be used in renewable energy system. The simulation results of the basic step inverter and the proposed step inverter under different loads show the feasibility of the topology.
【CateGory Index】: TM464
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