The effect of the error in the wind turbine converter without gearbox by removing the generator tachometer sensor

In this paper, detailed modeling of gearless wind turbine based on PMSG generator with back-to-back converter was presented. The design of direct control of torque and power was carried out along with the removal of the generator distance sensor. In practice, eliminating the distance sensor will have many advantages, including cost reduction and increased reliability. To remove the odometer sensor, the generator speed was estimated using an observer. Fault tolerant control is synonymous with a set of techniques developed to increase machine availability and reduce safety risks Its goal is to prevent a simple error from occurring in the event of a serious fault. Fault tolerant control integrates several things to achieve this goal, including online fault detection, automatic condition estimation, and calculation of remedial actions when fault tolerance is detected. Fault tolerance in wind turbines is of great importance to increase their reliability and availability. The designed observer and controller is compatible with the conditions of the occurrence of faults in the wind turbine and has been able to quickly stabilize the parameters in the conditions of the occurrence of errors and also the amplitude of the signal when it leaves the controller has been reduced. This error does not affect the generator current due to the powerful design of the DC link