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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Espinosa, E.E. Espinoza, J.R. Melin, P.E. Ramirez, R.O. Villarroel, F. Munoz, J.A. Moran, L. |
| Copyright Year | 1972 |
| Abstract | An asymmetric inverter features different dc-link voltages for each power cell and depending on the dc voltage ratios, there are binary, trinary, etc., asymmetric topologies. In particular, the trinary one can provide a waveform with 3n levels, where n is the number of cells connected in cascade. Hence, for n = 3, an output voltage with 27 levels can be obtained, ensuring a low total harmonic distortion (THD) and reduced dv/dt. However, when the load consumes active power, some power cells of the inverter can operate in regeneration mode, complicating the topology and control. To overcome this problem, a new modulation method for asymmetric inverters is presented. It features an ac output voltage of 13 levels for n = 3, and ensures unidirectional power flow in every power cell. This new modulation method also provides a voltage waveform with low dv/dt and reduced THD (5.7%). To confirm the approach, power flow and sensitivity analysis to changes in the dc voltage ratios are performed. Finally, simulation and experimental results are provided. |
| Sponsorship | IEEE Industry Applications Society |
| Starting Page | 1924 |
| Ending Page | 1933 |
| Page Count | 10 |
| File Size | 2382762 |
| File Format | |
| ISSN | 00939994 |
| Volume Number | 50 |
| Issue Number | 3 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Inverters Modulation Topology Load flow Firing Indexes Minimization asymmetric inverters DC–AC power converters total harmonic distortion (THD) multilevel converters Asymmetric inverters dc¿ac power converters |
| Content Type | Text |
| Resource Type | Article |
| Subject | Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering |
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