## 1 Introduction  
In many countries, wind is the prominent source of new energy and has become the beneficiary to develop their economies with different energy conversion machines such as the double fed induction generator (DFIG) [1; 2; 3; 4; 5]. The increase in the number of energy converters and their sizes demanded by industry opens up the way to build new burning designs and protection schemes [6; 7; 8; 9; 10]. Modern wind energy conversion systems (WECSs) rely on doubly fed induction generators (DFIGs) in order to fulfil the energy demands efficiently [11; 12]. The industry users and researchers have observed multiple benefits of this kind of machine, such as better control competency, low maintenance and inverter cost, robustness, and a comparatively higher power-size. In the concept of DFIG wind turbines, the rotor is linked to the grid through a moderately rated frequency converter, while the stator of the generator is directly coupled to the power grid [10]. The size and costs of the power electronic components are comparatively smaller than full-power converters,as the deployment of DFIGs in wind turbines has been the preferred choice. However, the concept to the network voltage dips response is observed to be challenging. The wind generation penetration has gained a remarkable level in a number of areas. The wind turbines in such zones are not certified to operate independently from the main power network. The power network stability may be threatened if wind turbines are cut off as a result of a voltage dip or wind speed variations [13]. The main operating system requires grid codes that maintain the wind turbines to be capable of tolerating during deep voltage dips. This situation is considered as fault-tolerant control in power grid operation [9,14]. Furthermore, in order to support the grid voltage, the grid codes required that wind turbines must be able to penetrate reactive power to the power network under the voltage dip condition [15]. The wind turbine units under grid disturbances are considered as the fault ride-through (FRT), and the ability to overcome these undesirable conditions is referred to as the FRT capability of the power grid [13]. The short-circuit faults (balanced and unbalanced) [12,16], speed sensors faults [17], DC voltage overshoot faults [10,18], and grid faults and actuator faults [9,19,20,21,22] are subjected to the DFIG. Multiple kinds of techniques [9,23,24] are applied and analyzed to overcome these thresholds and voltage overshoot faults [25,26]. If a balanced or an unbalanced voltage overshoot fault occurs in the DFIG power system, the system will depreciate the performance, and this influence may lead to the unscheduled shutdown of the power system and disconnection to the power grid. Therefore, DC voltage overshoot fault-tolerant control (DC-FTC) has been gaining increasing attention in the development of the reliability of the DFIG system. Fault current limiting approaches are one of the techniques utilized to limit the current level and protect the back-to-back converter switchings from over-current damage [27]. To reach this goal, DFIGs' active power output must be controlled within the limit of the operating conditions using a maximum power point tracking (MPPT) controller [10,28]. In the literature, FTC-based strategies on different control schemes have been recommended numerous times, including linear-quadratic, pseudo-inverse fuzzy logic, electromechanical faults, intelligent control FTC based on proportional internal control, dynamic inversion, command governor, neural network, and variable structure control, as well as methods based on the combination of different approaches [29,30]. It is widely used in multiple power generations systems including wind turbines with rotor speed sensor and pitch angle sensor faults [3]. These stratagems focus on the characteristics of multiple power systems including wind turbine systems.