الفهرس 
ContentsOnly 14 pages are availabe for public view
 |  | from | 162 |  |  |
| | | from | 162 | | |
Abstract
Throughout this thesis a smart regulator is completely designed. The design of the regulator is based upon the technology of microcomputer. Hence, the name smart regulator is selected. The whole circuits of the regulator are properly designed. There are three stages of circuits are designed and perfectly coupled. The stages initiates by the microcomputer (PIC) which is coupled with the second stage of the electronic buffers. The third stage is the power switches of MOSFET types. Proper two strategies are designed for perfect operation of the PV lighting system. The two strategies names sunrise and sunset strategies. These strategies control the load operation during the day light as well as at night. The PV system is designed for a lighting load of 60W, 12V LED. Solar cells module is design for supplying the flood light load along with a battery. Two Lead-Acid batteries of 62A.hr are used with PV lighting system. The design strategies control the load operation as well as the charging and discharging of the battery coupled with system. The solar cells module is selects according to its power output related to the load line matches to the I-V electrical characteristics of the PV module during the day light. The design of smart charge-discharge regulator for Lead-Acid battery is accomplished. The regulator is coupled with PV solar system for lighting the streets. The Lead-Acid battery is selected owing to; it has a cheap value than other batteries. Two points are selected namely the upper and the lower trigger points (UTP and LTP). The UTP point relates to the overcharge condition of the battery. Where, the LTP point refers to the discharge.