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Implementation of three-level inverter using a novel space vector modulation algorithm

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3 Author(s)
Yadong Liu ; Dept. of Electr. Eng., Tsinghua Univ., Beijing, China ; Xuezhi Wu ; Lipei Huang

In this paper, a 2.2 kW three-level voltage source inverter for AC motor application is presented. The hardware design is described. In order to achieve low dv/dt of the output voltage, a novel algorithm of space vector modulation (SVM) is applied. According to the algorithm, a fixed output vector 111 is added in every control period to achieve smooth change between vectors. Potential stability of neutral point voltage of DC-link capacitors is also achieved by a convenient method. The modulator is implemented with DSP and PLD (programmable logic device). Some simulation results and experimental results are given.

Published in:

Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on  (Volume:1 )

Date of Conference:

13-17 Oct 2002