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Abstract
The three-level neutral-point-clamped (3L-NPC) converter is a promising multilevel topology in the application of mega-watts wind power generation system. However, the growing requirements by grid codes may impose high stress and even give reliability problem to this converter topology. This paper investigates the loss and thermal performances of a 10 MW 3L-NPC wind power inverter undergoing Low Voltage Ride Through (LVRT) operation. A series of new space vector modulation methods are then proposed to relocate the thermal loading among the power switching devices. It is concluded that, with the proposed modulation methods, the thermal distribution in the 3L-NPC wind power inverter undergoing LVRT becomes more equal, and the junction temperature of the most stressed devices can be also relieved. Also the control ability of DC-bus neutral point potential, which is one of the crucial considerations for the 3L-NPC converter, is not compromised by the proposed modulation methods.
Original language | English |
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Title of host publication | Proceedings of the 21st IEEE International Symposium on Industrial Electronics (ISIE), 2012 |
Publisher | IEEE Press |
Publication date | 2012 |
Pages | 1880-1887 |
ISBN (Print) | 978-1-4673-0159-6 |
ISBN (Electronic) | 978-1-4673-0157-2 |
DOIs | |
Publication status | Published - 2012 |
Event | 21st IEEE International Symposium on Industrial Electronics - , China Duration: 28 May 2012 → 31 May 2012 |
Conference
Conference | 21st IEEE International Symposium on Industrial Electronics |
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Country/Territory | China |
Period | 28/05/2012 → 31/05/2012 |
Fingerprint
Dive into the research topics of 'Loss and thermal redistributed modulation methods for three-level neutral-point-clamped wind power inverter undergoing Low Voltage Ride Through'. Together they form a unique fingerprint.Projects
- 1 Finished
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Center Of Reliable Power Electronics (CORPE)
Blaabjerg, F., Munk-Nielsen, S., Pedersen, K. & Popok, V.
01/04/2011 → 31/12/2016
Project: Research