Abstract
The distortion of an H-bridge inverter originates from many nonlinear factors, of which the most dominant one is typically the dead-time. Different analytical and numerical methods have been proposed to calculate the distortion caused by the dead-time. However, all the existing methods are neglecting the effects of soft-switching and discontinuous conduction mode, resulting in a deviation with the practice. In this paper, the characteristics and the corresponding effects of each individual switching mode is analysed. Current constraint functions are proposed in order to determine the time position of different switching modes. A numerical method for calculating the output spectrum of the H-bridge inverter based on the switching mode analysis is introduced. The method has an improved accuracy compared to the previous analytical method especially when the inductor current ripple is high. The results are verified by simulation and an experimental prototype.
| Original language | English |
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| Title of host publication | 2019 IEEE Energy Conversion Congress and Exposition (ECCE 2019) |
| Place of Publication | Piscataway |
| Publisher | Institute of Electrical and Electronics Engineers |
| Pages | 2245-2251 |
| Number of pages | 7 |
| ISBN (Electronic) | 9781728103952 |
| DOIs | |
| Publication status | Published - Sept 2019 |
| Event | 11th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2019) - The Baltimore Convention Center, Baltimore, United States Duration: 29 Sept 2019 → 3 Oct 2019 Conference number: 11 http://www.ieee-ecce.org/2019/ |
Conference
| Conference | 11th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2019) |
|---|---|
| Abbreviated title | ECCE 2019 |
| Country/Territory | United States |
| City | Baltimore |
| Period | 29/09/19 → 3/10/19 |
| Internet address |
Keywords
- harmonics
- dead-time
- soft-switching
- discontinuous conduction mode
- hard-switching