The control of the DC bus is very important for renewable energy systems, such as photovoltaic and wind power systems, in order to ensure that they can be operated reliably and efficiently. we know the issue of fluctuating climatic conditions, such as irradiation or wind speed, which makes things unpredictable. These variations may cause imbalances on the DC bus, disrupting the operation of the downstream components, converters and inverters, and connected loads. Efficient DC bus regulation provides stabilization of voltage, which is quite critical for compatibility between renewable energy sources and storage systems like batteries and supercapacitors with loads. It also helps to reduce energy losses, protect equipment against overvoltage or undervoltage, and improve the service life of sensitive components. The integration of storage solutions enables optimal energy management, using batteries to provide a long-term energy reserve and supercapacitors to respond to rapid fluctuations. In short, their combination makes it possible to overcome the challenges posed by the intermittency of renewable energy sources.