Comparison of Losses in Permanent Magnet Synchronous Machines fed with 2-level or 3-level-NPC Converter
Konferenz: PCIM Europe 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
10.05.2022 - 12.05.2022 in Nürnberg, Germany
doi:10.30420/565822094
Tagungsband: PCIM Europe 2022
Seiten: 9Sprache: EnglischTyp: PDF
Autoren:
Knapp, Tobias; Hofmann, Wilfried (Chair for Electrical Machines and Drives, TU Dresden, Germany)
Schlegel, Ludwig (Chair for Electrical Machines and Drives, TU Dresden, Germany & M&P Motion Control and Power Electronics GmbH, Dresden, Germany)
Inhalt:
This paper investigates the losses of permanent magnet synchronous machines fed through a 2-level or 3-level-NPC (Neutral Point Clamped) converter. Fundamental and additional losses are calculated analytically from measured voltage and current harmonics. The theoretical results are verified by power measurements under rated conditions as well as under partial load and partial speed at different converter pulse frequencies. As a 3-level converter produces voltages with lower harmonic contents than a 2-level converter, the losses in the machine reduce significantly in a wide operation range when changing the converter topology from 2-level to 3-level.