一、Photovoltaic systems boom
With the increasing emphasis on environmental protection around the world, photovoltaic systems have been widely used in various fields. In the electricity market, photovoltaic systems can not only supply electricity to cities, but also provide lighting and communication services to remote areas. At the same time, photovoltaic systems have low installation costs and relatively low operating costs, so they are favored by more and more enterprises and government agencies.
二、Photovoltaic inverters have problems to be overcome
A photovoltaic inverter is a device that converts direct current generated by photovoltaic panels into alternating current. It monitors the voltage and current output by photovoltaic panels through the maximum power point tracking algorithm, realizes the voltage rise and fall of direct current, and converts it into a stable direct current power supply. Next, the inverter converts the DC power to AC power using high-frequency pulse width modulation technology, and smooths it through an output filter to ensure the quality and stability of the output current. Ultimately, the inverter connects the output AC power to the power grid to meet household or industrial electricity needs. In this way, photovoltaic inverters play a key role in converting solar energy into usable electricity.
At present, the common 1000~2200W photovoltaic inverter used at the input end of photovoltaic power generation system has a peak output voltage of up to 580V. However, the existing 500V output capacitor can no longer meet the needs of photovoltaic inverters. Among them, aluminum electrolytic capacitors play a crucial role, which can not only provide the necessary filtering and storage functions, but also ensure the reliability and efficiency of the entire system. If the output voltage is insufficient, it will cause the capacitor to heat up, break down, and eventually be damaged. Therefore, it is necessary to carefully consider various factors when selecting an electrolytic capacitor, and choose the most suitable product to ensure the proper operation of the system and obtain the best performance.
三、Yongming high-voltage lead-type capacitors solve the "high voltage" emergency
In order to solve the high-voltage problem of photovoltaic inverters, Shanghai Yongming launched high-voltage lead-type LKZ series aluminum electrolytic capacitors. The family has precise performance characteristics and operates over a wide range of input voltages, including peak voltages up to 580V. The excellent performance of LKZ series capacitors can improve the stability and efficiency of photovoltaic inverters and provide customers with the best solutions.
1、Super strong surge and impact resistance: LKZ series aluminum electrolytic capacitors can reach 600V voltage, which can easily handle the peak voltage and large current during output.
2、Ultra-low internal resistance and better low-temperature characteristics: Compared with Japanese capacitors of the same specification, the impedance of Yongming capacitors is reduced by about 15%~20%, which ensures the small temperature rise, large ripple resistance and -40℃ performance of the capacitor during operation. Low temperature characteristics, so that the capacitor will not fail early in the long-term work.
3、Higher capacity density: Yongming aluminum electrolytic capacitors are more than 20% larger than Japanese capacitors of the same specification and size, with higher capacity density and better filtering effect; at the same time, under the same power requirements, using Yongming Larger capacity electrolytic capacitors can reduce customers' cost in terms of capacitance.
4、High reliability: Yongming's electrolytic capacitors provide a more comprehensive guarantee for the stability and reliability of key electronic components such as photovoltaic inverters, making the performance of the entire photovoltaic system more excellent.
Rated voltage: 550~600V
Capacity range: 82~220μF
Working temperature: -40~105℃
Lifespan: 12000~15000H
四、Create high-quality domestic capacitors and advance to the international market
As a domestic innovative capacitor, Yongming's liquid lead aluminum electrolytic capacitor has great advantages in the application of photovoltaic inverters, providing a strong guarantee for the stability of the photovoltaic system, and its comprehensive performance is comparable to that of Japanese capacitors. .
Post time: Aug-09-2023