Harmonic Analysis and Mitigation of Low-Frequency Switching Voltage Source Inverter With Auxiliary VSI
| Autor: | Poh Chiang Loh, Frede Blaabjerg, Haofeng Bai, Xiongfei Wang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Grid voltage
Computer science 020209 energy 020208 electrical & electronic engineering Energy Engineering and Power Technology 02 engineering and technology Low frequency Harmonic analysis Harmonics 0202 electrical engineering electronic engineering information engineering Electronic engineering LC filtered VSI Impedance model Voltage source Electrical and Electronic Engineering Electrical impedance Active filter Voltage source inverter |
| Zdroj: | Bai, H, Wang, X, Blaabjerg, F & Loh, P C 2018, ' Harmonic Analysis and Mitigation of Low-Frequency Switching Voltage Source Inverter with Auxiliary VSI ', I E E E Journal of Emerging and Selected Topics in Power Electronics, vol. 6, no. 3, 8249540, pp. 1355-1365 . https://doi.org/10.1109/JESTPE.2018.2789982 |
| ISSN: | 2168-6785 2168-6777 |
| DOI: | 10.1109/jestpe.2018.2789982 |
| Popis: | The output currents of high-power Voltage Source Inverters (VSIs) are distorted by the switching harmonics and the background harmonics in the grid voltage. This paper presents an active harmonic filtering scheme for high-power, low-frequency switching VSIs with an additional auxiliary VSI. In the approach, the auxiliary low-power, high-frequency switching VSI is used to compensate both the switching harmonics of the high-power VSI and the low-order harmonics introduced by the distorted grid voltage. Impedance modeling and analysis are implemented for the hybrid VSI system, where the impacts of the grid impedance are analyzed. Different control targets are then formulated based on the analysis, and the corresponding control strategies are proposed. Lastly, simulations and experimental results are provided to validate the theoretical analysis and the performance of the proposed control strategy. |
| Databáze: | OpenAIRE |
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