High speed AC locomotives: harmonic and interharmonic analysis at a vehicle test room

摘要: The paper presents and analyzes the results of harmonic interharmonic measurements performed at vehicle test room CRIS Ansaldo on new high-speed locomotive ETR500. adjustable speed drives this utilize PWM-controlled converters to both rectify voltage AC supply system feed motors. These show advanced control characteristics, energy efficiency currents distorted in terms harmonics interharmonics reduced amplitude but with a wide range frequencies. Harmonics are evaluated different operating conditions. In particular, significant conditions obtained tuning realistic resonance frequencies by means variable power capacitors, properly designed. General problems such as flexibility ability reproduce railway discussed.