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A Different Multilevel Current-Source Inverter

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6 Author(s)
Vazquez, N. ; Dept. of Electron. Eng., Inst. Tecnol. de Celaya, Celaya, Mexico ; Lopez, H. ; Hernandez, C. ; Vazquez, E.
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DC/AC converters are widely used in several applications; traditionally, they can be classified in two types: the voltage-source inverters (VSIs) and the current-source inverters (CSIs). Their use depends on their application; however, some of them are common for both types of converters. Another possibility for the dc/ac conversion is the multilevel configuration, and the most analyzed is the VSI. In this paper, a different multilevel CSI is proposed: the paralleled configuration. To control the converter, a different sinusoidal pulse with modulation is employed; it consists of modifying the reference signal instead of using multiple carriers. Additionally, a balancing method for the inductor currents is given. The operation, analysis, and implementation are presented; moreover, simulation and experimental results are shown.

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Industrial Electronics, IEEE Transactions on  (Volume:57 ,  Issue: 8 )