Effect of Multilevel Inverter Supply on Core Losses in Magnetic Materials and Electrical Machines
| Autor: | Luc Dupré, Paavo Rasilo, Ahmed Mohamed Abouelyazied Abdallh, Frederik De Belie, A. Salem, Jan Melkebeek |
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| Přispěvatelé: | Sähkötekniikan korkeakoulu, School of Electrical Engineering, Sähkötekniikan ja automaation laitos, Department of Electrical Engineering and Automation, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2015 |
| Předmět: |
Engineering
Energy Engineering and Power Technology Inductor excess loss law.invention law Eddy current iron loss Electrical and Electronic Engineering electrical machines ta213 Eddy currents pulse width modulation business.industry Electrical engineering multilevel converter magnetic hysteresis Power (physics) Lamination (geology) Hysteresis finite-element analysis magnetic materials Inverter business Pulse-width modulation finite-element analysis Voltage |
| Zdroj: | IEEE Transactions on Energy Conversion. 30:736-744 |
| ISSN: | 1558-0059 0885-8969 |
| DOI: | 10.1109/tec.2014.2372095 |
| Popis: | The effect of multilevel inverter supply on power losses in magnetic cores and electrical machines is studied. A dynamic numerical model for the hysteresis, eddy current, and excess losses in a core lamination is first developed. By both measurements and simulations for a ring-core inductor, we demonstrate how increasing the number of inverter voltage levels decreases the iron losses when compared with traditional two-level supply. Although the switching frequency has a significant impact on the iron losses in the case of a traditional two-level inverter, using three or five voltage levels makes the losses almost independent of the switching. Finally, finite-element simulations show that simi-lar reductions are also possible for the core losses of 150-kVA and 12.5-MW wound-field synchronous machines, in which rather low switching frequencies are typically used. Calorimetric loss measurements are also presented for the 150-kVA machine in order to confirm the significant effect of switching frequency on the core losses with two-level inverter supply. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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