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Research on Smart Controller for Photovoltaic Street Lighting System

Author: PangDaJun
Tutor: TianXinCheng
School: Shandong University
Course: Control Theory and Control Engineering
Keywords: Solar Street Light Maximum power point tracking technology Charge and discharge control algorithm Lead-acid batteries Intelligent Network
CLC: TP273
Type: Master's thesis
Year: 2010
Downloads: 439
Quote: 2
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Abstract


With the tense situation of global energy, solar photovoltaic power generation has gradually been popular, and is widely used in the field of street lighting. With the combination of the emergence of new energy-saving lamps LED lamps, solar street lights, and new LED lamps, so the more practical energy-saving value in the development of intelligent solar street lights. The development of high-performance solar street light key is the design of high-performance solar street light controller. The design goal of this project is developed based on the ATmega128 microcontroller the smart solar street light controller, making it not only have solar street lighting system itself intelligent management features, also has a proximal / remote monitoring and management of functions. The system design process is divided into: the system algorithm design, software and hardware design of the SCM system, proximal / remote host computer monitoring software design, street lamp intelligent monitoring network set up. Algorithm design mainly includes three parts: (1) solar cell maximum power point tracking algorithm design. In-depth study of the solar cell output characteristics, combination of fuzzy control theory, design a tracking fast, simple maximum power algorithm. (2) battery charging algorithm design. Combined maximum power output of solar cells tracking algorithm and battery charge and discharge characteristics, the design of the \This algorithm can guarantee the charging efficiency, but also to achieve the necessary protection of the battery. ③ remaining battery power detection model, the main purpose is to estimate the remaining battery power. When the battery is in a discharged state, the battery terminal voltage is measured in real time, and combined with the corresponding remaining battery detection algorithm, to adjust the discharge of a battery mode in a timely manner. The controller design to achieve maximum power tracking, battery charge and discharge a variety of self-protection function, protection and various types of communication function design. Communication design to realize the the proximal PC monitoring and remote PC monitoring function of the host computer program development. The proximal PC monitoring mainly refers to the host computer through a serial port to communicate with microcontroller control system; remote PC monitoring to achieve monitoring via the controller Ethernet communication module. Intelligent monitoring network controller hardware the integrated Ethernet design module and wireless communication module design based on the flow-level topology model. The network uses a hierarchical management model, network structure is divided into a remote control layer, the target LAN control layer, terminal execution layer. Guarantee through the network hierarchical set the remote control to control the information flow unobstructed.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system
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