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3D-SVM Algorithm and Capacitor Voltage Balancing in a 4-leg NPC Converter Operating under Unbalanced and non-linear Loads
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| Author(s) |
Felix Eduardo ROJAS LOBOS, Ralph KENNEL, Roberto CARDENAS |
| Abstract |
In this paper analysis and simulation of a 3D-Space Vector Modulation (SVM) for a 4-Leg Neutral-Point-Clamped (NPC) Inverter, including the capacitor voltage balancing is presented. In order to analyze thecapacitor voltage balancing, different regions are defined in the a-b-g space. The analysis and simulationsresults show that for sinusoidal, symmetric, balance or unbalanced voltages reference and linear loads,the NP voltage oscillate naturally around the middle point of the DC-Link voltage. In addition, theanalysis explains the low frequency oscillation of the NP voltage and the feasibility to balance the NPvoltage under generalized voltage references and unbalanced loads. |
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| Filename: | 0834-epe2013-full-16432745.pdf |
| Filesize: | 1.056 MB |
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| Type |
Members Only |
| Date |
Last modified 2014-02-09 by System |
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