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Simple Control Algorithm to Balance the DC-Link Voltage in Multilevel Four-Leg Four-Wire Diode Clamped Converters
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| Author(s) |
Jose I. Leon, Giuseppe Guidi, Leopoldo G. Franquelo, Tore Undeland, Sergio Vazquez |
| Abstract |
Multilevel converters and specially multilevel
four-leg four-wire converters actually are an important
focus of researchers. Applications as harmonic
compensation and energy quality are the major objectives of
this type of converters. The balancing of the DC-Link
capacitors voltage is a critical problem in multilevel
converters and the first control strategy based on using the
redundant vectors in a Space Vector Modulation scheme for
four-leg four-wire Diode Clamped converters is presented.
The balancing algorithm was simulated and finally
successfully implemented in a real prototype. It is important
to notice that the proposed method is completely generalized
an due to it, it is independent of the load and independent of
the number of levels of the converter. Besides, the proposed
balancing control algorithm works with balanced or
unbalanced loads. Experimental results are presented using
a 50KW prototype. |
| Download |
| Filename: | T3-203.pdf |
| Filesize: | 383.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-12 by System |
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