DC-Link Stabilization and Voltage Sag Ride-Through of Inverter Drives
2006; Institute of Electrical and Electronics Engineers; Volume: 53; Issue: 4 Linguagem: Inglês
10.1109/tie.2006.878308
ISSN1557-9948
AutoresKai Pietiläinen, Lennart Harnefors, Andreas Petersson, Hans‐Peter Nee,
Tópico(s)Multilevel Inverters and Converters
ResumoPrevious results concerning instability of the dc link in inverter drives fed from a dc grid or via a rectifier are extended. It is shown that rectifier-inverter drives equipped with small (film) dc-link capacitors may need active stabilization. The impact of limited bandwidth and switching frequency in the inverter-motor current control loop is considered, and recommendations for selection of the dc-link capacitor, the switching frequency, and the dc-link stabilization control law in relation to each other are given. This control law is incorporated in a field-weakening (to enhance voltage sag ride-through) current controller for which design recommendations are presented
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