Performance characteristics of solar-photovoltaic flywheel-storage systems

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6518419

Jarvinen, P. O.; Brench, B. L.; Rasmussen, N. E.

A solar photovoltaic energy flywheel storage and conversion system for residential applications was designed, built and tested. Performance and efficiency measurements were conducted on the system, which utilizes low-loss magnetic bearings, maximum-power-point tracking of the photovoltaic array, integrated permanent magnet motor-generator, and output power-conditioning sections of either the stand-alone cycloconverter or utility interactive inverter type. The overall in-out electrical storage efficiency of the flywheel system was measured along with the power transfer efficiencies of the individual components and the system spin-down tare losses. A round-trip storage efficiency of 82% in the utility interactive mode and 74% in the stand-alone mode was found. This compares favorably with systems involving batteries and an inverter, which typically exhibit a round trip efficiency less than 70%.

• Research Organization: Massachusetts Inst. of Tech., Lexington (USA). Lincoln Lab.
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76ET20279
• OSTI ID: 6518419
• Report Number(s): DOE/ET/20279-134; CONF-810526-23
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
25 ENERGY STORAGE
250500 -- Energy Storage-- Flywheels
DC TO DC CONVERTERS
DESIGN
EFFICIENCY
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ENERGY STORAGE
EQUIPMENT
FLYWHEEL ENERGY STORAGE
INVERTERS
PERFORMANCE TESTING
PHOTOVOLTAIC POWER SUPPLIES
POWER CONDITIONING CIRCUITS
POWER SUPPLIES
SOLAR EQUIPMENT
STORAGE
TESTING