Summary of Thermal Stress of 10-MW Wind Power Converter Under Normal Operation

Summary

The thermal profile of power switching devices under steady-state wind speeds is an important tool which can be used either as a loading indicator for certain converter topologies or as a lookup table for the lifetime estimation. It was found that wind speed variations will lead to severe thermal excursion of some power switching devices in the given 3L-NPC wind power converter. Particularly, the clamping diode and outer switch suffer from more adverse thermal excursion than the other devices. The grid codes even under normal operation may change the delivered reactive power of wind power converters and thereby have impacts to the converter efficiency as well as thermal stress distribution of power devices.

By circulating the reactive power among paralleled converters in a wind farm or multi-cell converter system, it is possible to control the junction temperature and relive the thermal excursion in most stressed devices under wind gust operation, leading to higher reliability of the converter, while the increased thermal stresses to the other devices or paralleled converters are still acceptable.

Related posts:

Circuit-Level Transient Suppression:Protecting High-Voltage Supplies.
Semiconductors:Semiconductor Failure Modes
High-frequency power supplies.
Transformers:Test methods.
Power Factor and Dissipation Factor Testing Methods:PF and DF Test Methods General
Low-Voltage Switchgear and Circuit Breakers:Conducting a Thermographic Survey
Mechanical fuel systems:Injectors
TIDAL BARRAGE POWER PLANTS:ENVIRONMENTAL CONSIDERATIONS
POWER SYSTEM ENERGY STORAGE TECHNOLOGIES:TYPES OF ENERGY STORAGE
The Current Situation and Perspectives on the Use of Solar Energy for Electricity Generation:The Use...
The Current Situation and Perspectives on the Use of Wind Energy for Electricity Generation:Poland
The Current Situation and Perspectives on the Use of Biomass in the Generation of Electricity:Lookin...
Impact of Large Penetration of Correlated Wind Generation on Power System Reliability:Results
HVDC Transmission for Offshore Wind Farms:Cable Technologies
Wind Farm Protection:FRT Criteria, Protection, and Control Coordination

Leave a comment

Your email address will not be published. Required fields are marked *