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| Content Provider | IET Digital Library |
|---|---|
| Author | Kumar, Gatla Ranjith Zhu, Guo Rong Lu, Jianghua Chen, Wei Li, Bo |
| Abstract | Nowadays, great progress has been made in the development of multilevel inverters (MLIs) in grid-connected photovoltaic (PV) energy systems, because of the advantages such as reduced voltage stress on the power semiconductor switches and having higher efficiency. Since the multilevel PV inverter (MLPVI) has been a critical part within the failures of a PV energy system, so it becomes important to predict the lifetime of the components and the MLPVI system. In this paper, a five-level modular cascaded H-bridge MLI is analyzed based on grid-connected application for PV energy system, and an independent dc-link voltage controller for each H-bridge is implemented by taking the reference value generated from the maximum power point tracking algorithm of each PV module. The loss and thermal distributions of the different power devices in the MLPVI system are investigated and illustrated for various pulse-width modulation (PWM) controllers. The junction temperature and power losses of the components in the MLPVI are simulated by MATLAB/Simulink and Piecewise Linear Electrical Circuit Simulation (PLECS) blockset, which validate the theoretical analysis. The reliability of the MLPVI is evaluated using parts stress method. It shows that the MLPVI has a good reliability when phase shift PWM control technique is used. |
| Starting Page | 1595 |
| Ending Page | 1599 |
| Page Count | 5 |
| Volume Number | 2017 |
| e-ISSN | 20513305 |
| Issue Number | Issue 13, Jan (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2017/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0601 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2017-01-01 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Cascaded Connection Cascaded H-bridge MLPVI Control of Electric Power System Five-level Modular Cascaded H-bridge MLI Grid-connected Application Grid-connected Photovoltaic Energy System Grid-connected PV Energy System Independent Dc-link Voltage Controller Loss Distribution Lower-voltage Rating SemiConductor MATLAB Maximum Power Point Trackers Maximum Power Point Tracking Algorithm Multilevel PV Inverter Phase Shift PWM Control Technique Photovoltaic Power System PLECS Blockset Power Device Power Generation Control Power Generation Reliability Power Grid Power Semiconductor Device Power Semiconductor Switches Pulse-width Modulation Controller PWM Controller PWM Invertors Reduced Voltage Stress Relay And Switches Reliability Reliability Evaluation Semiconductor Switches Simulink Solar Power Stations System Efficiency Thermal Analysis Thermal Distribution |
| Content Type | Text |
| Resource Type | Article |
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