MATHEMATICAL ANALYSIS OF MAXIMUM POWER GENERATED BY PHOTOVOLTAIC SYSTEMS AND FITTING CURVES FOR STANDARD TEST CONDITIONS

The rural electrification is characterized by geographical dispersion of the population, low consumption, high investment by consumers and high cost. Moreover, solar radiation constitutes an inexhaustible source of energy and in its conversion into electricity photovoltaic panels are used. In this study, equations were adjusted to field conditions presented by the manufacturer for current and power of small photovoltaic systems. The mathematical analysis was performed on the photovoltaic rural system I- 100 from ISOFOTON, with power 300 Wp, located at the Experimental Farm Lageado of FCA/UNESP. For the development of such equations, the circuitry of photovoltaic cells has been studied to apply iterative numerical methods for the determination of electrical parameters and possible errors in the appropriate equations in the literature to reality. Therefore, a simulation of a photovoltaic panel was proposed through mathematical equations that were adjusted according to the data of local radiation. The results have presented equations that provide real answers to the user and may assist in the design of these systems, once calculated that the maximum power limit ensures a supply of energy generated. This real sizing helps establishing the possible applications of solar energy to the rural producer and informing the real possibilities of generating electricity from the sun.

Design and Test of a High QoS Radio Network for CBTC Systems in Subway Tunnels

Communications Based Train Control Systems require high quality radio data communications for train signaling and control. Actually most of these systems use 2.4GHz band with proprietary radio transceivers and leaky feeder as distribution system. All them demand a high QoS radio network to improve the efficiency of railway networks. We present narrow band, broad band and data correlated measurements taken in Madrid underground with a transmission system at 2.4 GHz in a test network of 2 km length in subway tunnels. The architecture proposed has a strong overlap in between cells to improve reliability and QoS. The radio planning of the network is carefully described and modeled with narrow band and broadband measurements and statistics. The result is a network with 99.7% of packets transmitted correctly and average propagation delay of 20ms. These results fulfill the specifications QoS of CBTC systems.

Vehicle integration and evaluation of advanced restraint systems. Phase B - test report: Torino-to-Volvo tests.

National Highway Traffic Safety Administration, Washington, D.C.

Field test evaluation of rear lighting systems. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

The evaluation of 1975 Torino type 2 restraint systems with web locking and force limiting features. Test report.

National Highway Traffic Safety Administration, Washington, D.C.

Evaluation of occupant protection devices and restraint systems. Test report.

National Highway Traffic Safety Administration, Washington, D.C.

Vehicle integration and evaluation of advanced restraint systems. Phase A - test report: Volvo-to-Volvo [and] Volvo-to-barrier test.

National Highway Traffic Safety Administration, Washington, D.C.

CSTA, U.S. Army Combat Systems Test Activity : testing for excellence.

Mode of access: Internet.

Mobile home heating, cooling and fuel burning systems : test report /

"October 1979."

Operator's manual : test set, generator, and voltage regulator, automotive, 6, 12, and 24 volt systems (Sun Electric Corp., model no. VAT-25) (4910-270-3780).

"August 1966."

Operator, organizational, direct support, and general support maintenance manual (including repair parts and special tools list and depot maintenance repair parts and special tools) : test set, generator and voltage regulator, automotive, 12-and 24-volt systems (Allen Electric and Equipment Company model no. 30-92) (4910-092-9136).

"15 October 1971."

Organizational, direct support and general support maintenance repair parts and special tools list for tool outfit, Hydraulic Systems Test and Repair (HSTRU), NSN 4940-01-036-5784.

"August 1980."

Operator's, organizational, direct support, and general support maintenance manual for tool outfit, Hydraulic Systems Test and Repair (HSTRU) (NSN 4940-01-036-5784).

Includes index.