Recently, Lorida reached a deep consensus with its partners on the design scheme of solar inverter motherboard components. The two sides focused on the selection of core components, circuit performance optimization and reliability improvement of the inverter, focusing on the customized design of electrolytic capacitors to achieve a double breakthrough in inverter efficiency and stability.
Electrolytic capacitor: the "voltage regulator" and "energy storage station" of inverter circuit performance
In solar inverter, electrolytic capacitor plays a key role in energy storage, filtering and voltage stabilization, and its performance directly affects the energy conversion efficiency and system life. Aiming at the challenges such as voltage fluctuation, excessive temperature rise and volume limitation of high-power inverter under complex working conditions, Lorida proposes the following optimization scheme:
Selection of high-frequency and low-resistance capacitors: electrolytic capacitors with withstand voltage of 500V-630V and capacity of 3000μF-6800μF are adopted. By reducing the equivalent series resistance (ESR) to less than 15mΩ, the energy loss during charging and discharging is reduced, the dynamic response speed is improved, and the inverter can still stably output when the illumination changes suddenly.
Compact and modular layout: In view of the space limitation of the main board, a "distributed capacitor array" is designed, which replaces the traditional single large-volume capacitor with multiple miniaturized high-frequency capacitors (18mm-35mm in diameter), and disperses the heat source through parallel layout, which reduces the measured temperature rise by 25% and improves the redundancy and fault tolerance of the circuit.
Enhanced adaptability to extreme environment: For high-temperature and high-humidity scenes, the electrolytic capacitor with 105℃ temperature resistance and explosion-proof pattern design is customized, and the service life is extended to more than 10,000 hours under the environment of -40℃ to +105℃, so as to meet the stringent requirements of photovoltaic power plants in desert and coastal areas.
Lorida shared a case of a photovoltaic project in the Middle East: by using customized high-frequency and low-resistance electrolytic capacitors, the full-load efficiency of 60KW inverter was increased from 97.1% to 98.5%, the main board volume was reduced by 20%, the temperature rise of capacitor module was reduced from 45℃ to 32℃ at 50℃, and the overall life of the system was extended by 30%. This achievement provides a reusable technology model for partners.
One-stop service from design to delivery, Lorida has demonstrated its core advantages in the field of inverter components:
Accurate BOM list optimization: integrate key components such as electrolytic capacitor, IGBT module, high-frequency inductor, provide parameter matching and compatibility verification, and reduce customer trial and error costs;
Full-link technology empowerment: based on the simulation software, the charge-discharge curve and heat distribution of the capacitor are simulated, and the scheme of "capacitor-radiator collaborative design" is put forward to ensure that the performance and reliability meet the standards;
Agile supply chain support: Cooperate with global head capacitor suppliers to ensure the stable supply of special capacitors such as high frequency, high voltage and long life, and shorten the delivery cycle by 40%.
Lorida gave the answer: "The high efficiency and miniaturization of inverters are inseparable from the precise design of components and system-level collaboration. Through the innovative application of electrolytic capacitors, we not only solved the pain points of customers, but also verified the value of one-stop solutions in complex energy systems. "
This technical cooperation has set a new benchmark for the high-density and high-reliability design of solar inverters. Lorida will continue to deepen cooperation with global partners, drive the efficiency upgrade of photovoltaic system with component-level innovation, and accelerate the process of green energy transformation.
