0 Preface In recent years, with the concern of people on environmental issues, the earth's requirements for clean energy are getting higher and higher. The company has been committed to the development of power conditioning systems (PCS) for solar power generation. Combined with the research and development case of solar power system control board, the problem of adjusting the system of paralleling multiple solar panels is introduced in this paper to reduce the cost and increase the number of parallel connected. 1 System Overview Figure 1 is a block diagram of a large-scale solar power system. The system is characterized in that the solar panel and the unit inverter group are connected to the system (AC connection), and the information such as system protection is summarized and sent as a signal to the main controller, and thus the controller controls each unit inverter ( Connect to the daisy chain connection via RS485 communication). The control part of each unit inverter is shown in Figure 2. By using our standard DSP substrate (PE-PR0/C32), MPPT control and system combination of the above specifications can be realized. A control board portion shown in FIG. 2 is formed by adding a function such as communication to the substrate. The power supply is designed and manufactured by the end user. The main circuit is shown in Figure 3. 2 Research and development case When the design was carried out on the basis of the company's standard product DSP substrate, it took only 3 months to develop the sample machine, which greatly shortened the development time and quickly entered the test phase (PE-PR0). /C32: DSP uses TI's high-speed floating point-point DSP TMS320C32). At the same time, in order to reduce the cost of sales, we have designed and developed a new control board using Renesas' RISC CPU SH7065 (fixed decimal point type). By using the RISC CPU, expensive components such as A/D converters can be cut in configuration, making switching smoother. Based on the company's development system, the core chip is changed from DSP (TMS320C32) to RISC CPU (SH7065), and it is not necessary to greatly modify the program due to factors such as electric pulse counting. This is because it uses a unique analog floating point to make program transfer between a fixed decimal point and a floating point simple. And these can be achieved through the company's standard library (PEOS). 3 Conclusion To date, the unit inverter's control panel has been sold in Japan for more than 300 sets and is still in continuous production. Through our development system, we believe that we can fully assist users in shortening the development time in the process of developing products, mass production at an early date, and improving product quality.
Generally, there are two kind of shapes: SMD LED (surface mount diode) and Through-hole LED.
470nm led is a aqua blue LED. Common aqua blue LEDs are like: aqua blue 470nm LED, aqua blue 475nm LED, aqua blue480nm LED and so on.
For the Through-hole Light Emitting Diode 470nm LED,
we
can customize the shape, the lighting angle, the number of emitting
source, the flat pin LED and braided LED. Such as: 5mm aqua Blue 470nm LED,
5mm aqua blue 475nm LED, 5mm aqua blue 480nm LED. 3mm aqua blue 470nm LED, 3mm aqua blue 475nm LED, 3mm aqua blue 480nm LED,
3mm Round blue LED ect.
For the SMD LED 470nm LED,
we
can supply dual-chip blue LED, three-chip blue LED, multi-chip blue LED, high voltage LED, flashing blue LED and variety of size
SMD LED. For instance: 3528 SMD aqua blue 470nm LED, 3528 SMD aqua blue 475nm
LED, 3528 SMD aqua blue 480nm LED.
2835 SMD aqua blue 470nm LED, 2835 SMD aqua blue 475nm LED, 2835 SMD aqua blue 480nm LED.
There are also have many other shapes to choose, like the
5050 SMD blue LED, the 5730 SMD blue LED ect. You can choose any one
of them for your requirement.
470nm LED 470nm LED, 470nm LED Strip, Blue 470nm LED, 470nm 3w LED Shenzhen Best LED Opto-electronic Co.,Ltd , https://www.bestsmd.com
There are many other shapes for your choose. Customized blue LED are available.
This 470nm LED, also called water blue LED. It's a fantastic blue LED, which is perfect for all kinds of LED lighting project.
