## Abstract  
In this paper, a robust current control of the hybrid renewable energy system (HRES), based on the PV-Wind system, is proposed. The HRES is connected to a multiport converter to synchronize the multi-source system with one DC-Bus. Due to their ability to integrate many renewable energy sources (RES) individually or simultaneously, multiport converters (MPC) are an innovative method suitable for renewable energy applications. Recently, many DC-DC converter designs and topologies have emerged to ensure the highest possible efficiency of hybrid RESs. The multiport converter is a typical coupling system with several modes of operation. Thus, the design of its controller become complicated. To stabilize the DC-Bus voltage, a battery has been added to the system. In this HRES configuration, all sources are connected in parallel via the multiport DC converter. We used the multiport DC converter to minimize the intermittent character of solar and wind and control the energy flow between the different power sources and the load, as well as to increase the performance of the system. The nonlinear robust control structure is based on Lyapunov approach to overcome the nonlinear model of the system to improve robustness and guarantees the asymptotic stability. The proposed control law is implemented and tested on dSPACE-DS1104. The results show the effectiveness and the feasibility of the proposed controller. Key words and phrases:wind energy conversion system; photovoltaic system; hybrid system; robust multiport converter; MPPT; wind turbine; PMSG 2023137047. 12 June 2023137047.  
combined common AC/DC-Bus [11]. In general, these topologies require the use of a number of power converters to adapt and facilitate the transition of energy generated from renewable sources to the final use, which adds to the system's total complexity. Furthermore, as the numbers of converters increase, the efficiency of the system decreases due to losses in each converter [12]. The efficient control of the converters with a constant and optimal switching frequency makes it possible to minimize the heating of power components [13]. The first converters integrated in renewable energy systems were equipped with transformers to increase the generated voltages and bring them back to the same level as the grid. These topologies are known as isolated converters [14; 15]. The use of transformers increases the cost and size of the installation, and the overall efficiency of such a converter is reduced [16; 17]. The emergence of non-isolated converters has significantly improved the efficiency and reduced the size of the systems [18]. Generally, renewable energy systems require the use of multiple converters, which decreases the reliability of the system and increases the complexity of control. Now, many scientists are looking at the use of multiport converters (MPC) as a solution to these problem [19; 20; 21]. In fact, these converters' benefits include their centralized control, low cost, high conversion ratio, continuous input current and compact architectures [22]. In the literature, systematic approaches to the synthesis of MCs' diverse topologies based on various input sources have been also developed [23; 24]. In order to allow power to flow between each port, the multiport converter's main objective is to connect several power sources with inputs and outputs through a single power converter. The redundant and unnecessary power conversion stages and excessive solid-state switching components that are frequently seen in conventional topologies are eliminated by these multiport converters [25]. Numerous recent articles have been written about various features of new multiport converter technology. The authors in [26] explained more than thirty topologies and approved the use of wide-bandgap semiconductors in each. Multiport switching zero-current converters are used in a new way for energy storage management, as described in [27].