The energy storage industry is an indispensable part of the modern energy system. The inverter plays many roles in the modern energy storage system, including energy conversion, control and communication, isolation protection, power control, bidirectional charging and discharging, intelligent control, multiple protections and strong compatibility, which makes the inverter one of the indispensable core components of the energy storage system.
Energy storage inverters are usually composed of input, output and control systems. Capacitors play a role in the inverter, including voltage stabilization and filtering, energy storage and release, improving power factor, protection and smoothing DC pulsation. These functions together ensure the stable operation and high efficiency of the inverter. For energy storage systems, it can improve the overall efficiency and stability of the system.
Advantages of YMIN capacitors in inverters
High capacity density:
The inverter receives the electricity generated by renewable energy devices such as solar panels or wind turbines and converts it into a form of electricity that meets the demand. In this process, since the load current may increase instantaneously, the inverter needs to have strong energy regulation capabilities to ensure the smooth output of electricity.
YMIN aluminum electrolytic capacitors have the advantage of high capacity density, which can store more charge in the same volume, fully meeting the demand of load current that may increase instantly. In the operation of the inverter, this feature ensures the smooth output of electric energy.
High ripple current resistance:
During the operation of the inverter, if power factor correction is not performed, the current at its output may contain a large amount of harmonic components. YMIN aluminum electrolytic capacitors, with their low equivalent series resistance (ESR) and excellent high-frequency characteristics, can effectively reduce the harmonic content, not only meeting the load’s demand for high-quality AC power, but also ensuring that the inverter complies with relevant standards for grid access, reducing interference and negative impact on the grid.
In addition, on the DC input side of the inverter, YMIN capacitors, with their high capacitance density and excellent filtering performance, can further filter out noise and interference in the input DC power supply, ensuring that the input current is purer, thereby reducing the impact of interference signals on subsequent parts of the inverter circuit and comprehensively improving the stability and operating efficiency of the system.
High voltage resistance advantage:
Due to changes in light intensity, the output voltage of the photovoltaic system may be unstable, and the power semiconductor devices in the inverter will also generate voltage and current spikes during the switching process. These spikes may cause damage to the power devices. Therefore, the buffer capacitor plays an important role in absorbing voltage and current spikes and protecting the power devices from excessive voltage or current shocks. At the same time, the capacitor can smooth the changes in voltage and current, reduce energy loss during the switching process, and thus improve the conversion efficiency and overall stability of the inverter.
YMIN capacitor selection recommendation in inverter:
Summarize：
YMIN capacitors have comprehensively improved the performance of inverters in energy storage systems with their excellent characteristics such as high voltage resistance, high capacity density, low ESR, and strong ripple current resistance. It not only reduces losses in the energy conversion process through excellent filtering and voltage regulation characteristics, but also can stably adjust voltage, current and frequency to ensure more reliable system output. At the same time, capacitors quickly absorb transient shocks and smooth voltage pulsations, enhancing the system’s anti-interference and stability. In addition, YMIN capacitors efficiently support energy storage and release during the charging and discharging process, maximizing the energy utilization efficiency of the energy storage system and helping the entire system achieve higher conversion efficiency, stronger stability, and lower energy loss.
Post time: Jan-17-2025