Changsha Yueer Solar Energy Technology Co., Ltd. is committed to the research, production, sales and implementation of solar photovoltaic building integration application projects. Our products include scenery complementary street lamps, solar street lamps, courtyard lamps, corridor lamps, solar traffic sign series, solar traffic signal lamp series, solar warning flash lamps, solar traffic emergency signal lamp vehicles, solar traffic engineering construction vehicles, solar insecticidal lamps, tent lamps, beauty lamps and LED advertising display screens. Provide a variety of products with green energy for construction, transportation, electric power, agriculture, advertising and other industries, and undertake solar street lighting and traffic signal lamp projects.
(Welcome to Changsha for work inspection and field visit to our company's scientific research base and factory production)
● Working principle of Changsha Yueer solar wind-solar complementary street lamp.
Changsha Yueer solar wind-solar hybrid power generation system is a device that converts wind energy and light energy into electric energy. The working principle is that the natural wind is used as power, and the wind wheel absorbs the energy of the wind to drive the wind generator to rotate and convert the wind energy into electric energy. After the AC power is rectified and stabilized by the controller, it is converted into DC power to charge and store the battery. The photovoltaic effect is used to directly convert solar energy into direct current, which can be used by loads or stored in storage batteries for later use.
● Configuration of Yueer Solar Wind-solar Complementary Street Lights in Changsha City
1. Basic components
According to China's urban road lighting design standard CJJ45-2006, the structure of Changsha Yueer solar wind-solar complementary street lamp is composed of solar cell module, fan, solar high-power LED, LPS lamp, photovoltaic control system, fan control system, special maintenance-free solar cell and other components, as well as solar cell module bracket, fan accessories, lamp poles, embedded parts, battery buried boxes and other accessories.
1. 1 fan
Alternator adopts patented permanent magnet rotor magnetic circuit structure and special stator design. The generator stator adopts 48-slot ordinary pole single-layer chain winding (y=3, a= 1), and the winding structure parameters are as follows: number of coils Q=24, number of coil groups U=24, number of coils in each group x= 1, and number of parallel branches a=65438. The rotor magnetic steel is arranged tangentially, and the number of magnetic poles 2p= 16. Magnetic steel is made of permanent magnet NdFeB. Through optimization design and many tests, the shape, size and configuration of magnetic steel are determined, which effectively reduces the negative torque of generator, makes the wind wheel and generator have better matching characteristics, expands the effective wind speed range, increases the annual power generation, and finally realizes the objective function of optimal design of permanent magnet generator-the best cost performance.
1. 1.2. Changsha Yueer solar cell module
The minimum conversion efficiency of the battery produced by Wuxi Shangshang Photovoltaic (an application product for the Olympic Games) exceeds 17%, and the minimum design life exceeds 15 years. At the same time, the components adopt imported EVA and tempered glass. After vacuum lamination packaging, the protection level meets the requirements of IP65, and the peak power deviation is within 3%. In this way, the long-term reliable operation of solar cell modules can be guaranteed to the maximum extent, and the maintenance cost of the system can be greatly reduced.
1.2. Control system
1.2. 1.LM series wind turbine controller
The controller of Changsha Yueer solar wind turbine adopts microcomputer control strategy, and the power electronic converter constitutes a system of rectification, voltage stabilization and control of various fault indications. It solves the problem of the integration of rectification and voltage stabilization that has been beset by small wind turbines, and at the same time, it has many automatic protection functions such as overcharge, overdischarge and undervoltage of batteries.
1.2.2.LM series intelligent controller for photovoltaic system
The intelligent controller of photovoltaic system adopts the latest scientific and technological achievements of China University of Science and Technology and is produced by Changsha Yueer Solar Technology Co., Ltd., which has the functions of overcharge, overdischarge, overvoltage protection and temperature compensation, and has the functions of automatic deep discharge, lightning protection and pulse charging for two years. Light control, time control, dual time control or mixed light/time control.
1.3. Luminous light source
The lighting street lamp adopts the light-emitting diode LED light source produced by the international brand Yousipu.
(1) ①LED is a semiconductor element, which is different from incandescent lamp. There are no vulnerable moving parts such as glass and tungsten wire, so the failure rate is extremely low and maintenance-free (2) Long service life, up to 20,000 ~ 25,000 h (the service life of traditional light sources is only 2,000 ~ 3,000 h); ③ Short response time, only 60ns；; (4) high efficiency, low energy consumption, and the utilization rate of electric energy is as high as over 80%; ⑤ Small size and light weight are most suitable for designing compact street lamps; ⑥ The green lighting source does not contain harmful substances such as mercury, and the heat and radiation are small; ⑦ The luminous efficiency of high-power white LED is generally 80lm/W, which creates favorable conditions for the design of white LED lamps. For example, the street lamps of our company's 18 1WLED wind-solar complementary system can emit at least 1440lm luminous flux. If incandescent lamps are used, they need 100W, and the effect of energy saving and emission reduction is remarkable.
1.4. Changsha Yueer special colloid maintenance-free battery for solar energy.
In the solar power supply system, the performance of the battery directly affects the comprehensive cost and operation of the system. In this scheme, UNILEAD brand batteries from the United States are selected, which are specially used for solar power supply system. Compared with ordinary lead-acid batteries, it has the following outstanding features in design and manufacturing technology:
? Long service life, normally 5- 10 years.
? The battery is more suitable for cyclic charging and discharging of energy storage batteries by adopting appropriate anode and cathode alloy formula and active material ratio.
? The design of colloidal electrolyte can effectively inhibit the inevitable electrolyte delamination in AGM valve-regulated lead-acid battery, and can better inhibit the shedding of active materials and sulfation of electrode plates, thus delaying the performance degradation of the battery during use and improving the deep charge-discharge cycle life of the battery.
? The self-discharge is small, which makes the battery have a longer shelf life and reduces the frequency and workload of battery maintenance during storage.
? Low floating charge, low floating charge current and high battery charging efficiency.
? The process requirement is high, which reduces the difference of single battery; The matching of battery capacity, open circuit voltage and self-discharge makes the individual characteristic curves in the battery pack more consistent and the overall performance more excellent.
? Oxygen circulation is superior to ordinary electrolyte batteries, with less water loss and longer battery life.
? The design of gel electrolyte mode and the combination of embedded copper core pole make the battery safety further improved and the possibility of electrolyte leakage further reduced.
? The electrolyte of the battery adopts colloidal substance containing silicon dioxide, which is in a gel state and does not flow; When the colloid is injected, it is in a dilute sol state, with good hydrophilicity and uniform dispersion, which can fill all the spaces in the battery. In the case of high temperature overcharge, the battery is not easy to dry up, and the colloidal battery has large heat capacity and good heat dissipation, which is not easy to cause thermal runaway, and the battery can work in harsh environment.
Compared with ordinary sealed lead-acid batteries, energy storage colloid batteries have many excellent properties, and are more suitable for wind, solar and wind-solar complementary systems.