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Asymmetric space vector PWM for the three-level flying-capacitor inverter
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| Author(s) |
M. A. Severo Mendes; P. F. Seixas; B. G. de Andrade |
| Abstract |
This paper presents an improved space vector
PWM method for a 3-level
ying-capacitor inverter.
Simple algebraic equations are used to calculate the pulse
widths of the gate signals from the sampled reference
voltages. This feature makes easy the implementation in
real time. At low voltage levels, asymmetric modulation
is introduced to reduce harmonic distortion. The voltages
on the
ying capacitors are regulated by simple ON-OFF
controllers independently of the output voltage control.
The main features of the proposed technique are analyzed
by computer simulations. The algorithm was implemented
using a commercial DSP without ony external logic. The
experimental tests obtained con rm the expected results. |
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| Filename: | EPE2003-PP0997 - Severo-Mendes |
| Filesize: | 913.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2003-10-23 by Unknown |
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