Grid-tied PV battery systems.
Conference
·
OSTI ID:1027061
Grid tied PV energy smoothing was implemented by using a valve regulated lead-acid (VRLA) battery as a temporary energy storage device to both charge and discharge as required to smooth the inverter energy output from the PV array. Inverter output was controlled by the average solar irradiance over the previous 1h time interval. On a clear day the solar irradiance power curve is offset by about 1h, while on a variable cloudy day the inverter output power curve will be smoothed based on the average solar irradiance. Test results demonstrate that this smoothing algorithm works very well. Battery state of charge was more difficult to manage because of the variable system inefficiencies. Testing continued for 30-days and established consistent operational performance for extended periods of time under a wide variety of resource conditions. Both battery technologies from Exide (Absolyte) and East Penn (ALABC Advanced) proved to cycle well at a Partial state of charge over the time interval tested.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1027061
- Report Number(s):
- SAND2010-6683C
- Country of Publication:
- United States
- Language:
- English
Similar Records
Grid tied PV system energy smoothing.
Amp-hour counting control for PV hybrid power systems
Analysis of the effects of a passing cloud on a grid-interactive photovoltaic system with battery storage using neural networks
Conference
·
Tue Jun 01 00:00:00 EDT 2010
·
OSTI ID:1020535
Amp-hour counting control for PV hybrid power systems
Conference
·
Sun Jun 01 00:00:00 EDT 1997
·
OSTI ID:519115
Analysis of the effects of a passing cloud on a grid-interactive photovoltaic system with battery storage using neural networks
Journal Article
·
Tue Nov 30 23:00:00 EST 1999
· IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers)
·
OSTI ID:20080379