Abstract
Previous papers on small wind turbines have shown that the ratio of battery capacity to wind capacity (known as battery-wind capacity ratio) for small wind systems with battery storage has an important effect on wind turbine energy output. Data analysis from pilot project performance monitoring has revealed shortcomings in wind turbine energy output up to 75% of expected due to the effect of a'weak' battery grid. This paper presents an analysis of empirical test results of small wind battery systems, showing the relationships among wind turbine charging rate, battery capacity, battery internal resistance, and the change in battery voltage. By understanding these relationships, small wind systems can be designed so as to minimize 'dumped' or unused energy from small wind turbines.
Original language | American English |
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Number of pages | 12 |
State | Published - 2002 |
Event | American Wind Energy Association (AWEA) WINDPOWER 2002 Conference - Portland, Oregon Duration: 2 Jun 2002 → 5 Jun 2002 |
Conference
Conference | American Wind Energy Association (AWEA) WINDPOWER 2002 Conference |
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City | Portland, Oregon |
Period | 2/06/02 → 5/06/02 |
NREL Publication Number
- NREL/CP-500-32511
Keywords
- battery voltage stability
- battery-wind capacity ratio
- wind energy
- wind turbine energy capture
- wind turbines