描述
Product Description:
The solar DC voltage booster is an expertly crafted electrical device designed to efficiently convert low-voltage DC input into high-voltage DC output, meeting the demands of solar water pumping systems that operate at high voltages. This report explores the working principles, performance characteristics, application examples, and professional guidelines for the installation and maintenance of these boosters.
Working Principles and Technical Analysis
Utilizing innovative circuit designs and component configurations, the booster efficiently converts low-voltage DC to the necessary high-voltage DC. It is tailored to meet specific voltage requirements for various types of solar water pumps, such as 1/3-phase 220V AC pumps and 3-phase 380V AC pumps. For example, 1/3-phase 220V AC pumps typically require a maximum power voltage (Vmp) of 310V DC and an open-circuit voltage (Voc) of 350V DC. On the other hand, 3-phase 380V AC pumps need a Vmp of 540V DC and a Voc of 620V DC.
To generate high-voltage outputs, solar panels are often connected in series. Using a 37Voc solar panel as an example, ten panels in series yield a 370V DC output, while seventeen panels in series produce a 629V DC output. However, while this approach meets voltage specifications, it increases system investment and hinders the promotion of small-scale solar water pumping systems. To address this, we have developed a solar DC voltage booster, which reduces the number of solar panels needed and enhances cost-effectiveness.
Product Series and Performance Advantages
We offer three models of solar DC voltage boosters tailored for various application scenarios:
- LV40-70 Model: Engineered for “L” series (3-phase 220V AC) inverters, featuring an input voltage range of 40-70V DC and an output voltage range of 240-420V DC.
- LV60-90 (2T) Model: Compatible with “L” series inverters, featuring an input voltage range of 60-90V DC and an output voltage range of 300-450V DC.
- LV60-90 Model: Designed for “H” series inverters (3-phase 380V AC), offering an input voltage range of 60-90V DC and an output voltage range of 480-720V DC.
These boosters are expertly designed for small-power solar water pump inverters, offering low current and high voltage compatibility. They are especially suited for 0.75 kW and 1.5 kW pumps operating at 220V and 380V. The output voltage automatically adjusts in response to input voltage changes, ensuring precise tracking of the photovoltaic array’s maximum power point by the solar water pump inverter.
Application Instances and Benefit Analysis
Consider the LV60-90 booster as an example. In practical applications of three-phase solar water pumping systems, the minimum DC input voltage for the inverter is typically set at 450V. However, in cases where the pump power is relatively low, only the power of a few solar panels is needed to drive the system. Due to voltage constraints, additional panels are often required just to meet the inverter’s voltage requirements, leading to resource waste and increased costs.
The LV60-90 booster effectively converts low-voltage DC into the necessary high-voltage DC, meeting inverter voltage requirements while mitigating potential safety risks associated with high DC voltages from solar panels. For a 750W, three-phase, 380V pump using our 750W inverter (three-phase, 380V, DC input range of 450-750V), at least 1120W of solar panels are necessary. Using 280W solar panels (Vmp 37V, Voc 44V), four panels are needed. By connecting two panels in series, a Vmp of 74V and a Voc of 88V are achieved, which are perfectly within the 60-90V range, aligning with the input voltage requirements of the booster.
Installation Standards and Safety Precautions
Installation Environment: For optimal heat dissipation, install the booster vertically, maintaining a minimum clearance of 10 centimeters at both the top and bottom. It is advisable to place the unit indoors with suitable ventilation or exhaust systems to prevent exposure to direct sunlight.
Electrical Wiring: Electrical wiring must be conducted by certified professionals to eliminate risks of electric shock or fire hazards. Ensure the input power is disconnected prior to wiring. Choose solar arrays carefully to prevent damage to the device. Avoid altering power wiring to maintain electrical safety.
Conclusion and Outlook
The solar DC voltage booster demonstrates outstanding performance and promising potential in solar water pumping systems. With precise electrical conversion, it not only satisfies the high-voltage demands of solar water pumps but also significantly reduces the number of required solar panels, optimizes cost structure, and enhances overall system efficiency and safety. As technology progresses and market demand grows, we expect solar DC voltage boosters to play an increasingly vital role in advancing green energy applications and promoting the sustainable use of water resources.
