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Stability studies are also given in this paper The optimization of theĮxcitation system parameters and their effects on power system transient Reduced by using Eq' constant model, and thusĬonceal the potential of stability limits. System with time constant t=0.5", conceal the stability risk, while forįast response excitation system, the transient stability limits may be Power system stability studies to represent the conventional excitation The results demonstrate that the adjusting effects may beĮxaggerated by using the Eq' constant model in Parameter model, and real model identified from field data, are also theĮlectromagnetic force Eq' constant model, typical Results of three kinds of excitation system models, i.e. Therefore, it is necessary to adopt the parameters identified from theįield data in real power system stability studies. Represent the actual responses of the excitation system more accurately. In this paper that by using the excitation system parameters identifiedįrom the field data by means of modern identification technology can Have great effects on power system stability studies. The excitation system parameters of large synchronous generators The proposed controller has good adaptability and anti-interference in tillage depth control. As for the field experiments, the results are in good agreement with the simulation results, and the proposed controller shows good stability with the maximum error of tillage depth of 7.8% at the set depth of 10–20 cm. According to the simulation results, the proposed controller can adjust the hitch system to the set depth more quickly and steadily than the other controllers, with the minimum tracking error of 1.13 mm for the simulation with sine signal, and the shortest response time of 0.261 s and lowest overshoot of 12.4% for the simulation with step signal. Also, field experiments were conducted to assess stability of the proposed controller. Then, the designed controller was simulated by comparing with PID controller and fuzzy PID controller. And the VUFPID controller was designed in accordance with the error of tillage depth and the error rate of tillage depth. The electro-hydraulic hitch system was modeled through transfer functions of the electrically operated hydraulic valve and the hydraulic cylinder. The bifacial gain of a soiled system under E–W orientation (0.81) is greater than the bifacial gain of soiled system (0.34) under N–S orientation due to higher irradiance collection throughout the day.Ī control algorithm of fuzzy-PID controller with variable universe (VUFPID) was proposed to realize fast and accurate adjustment of tillage depth control on tractor-implement and adapt to the complex and changeable agricultural environments. The results show that the performance ratio (PR) of soiled system installed at E–W orientation (1.37) is greater than PR of N–S-oriented system (0.99). Furthermore, a case study investigating the impact of bifacial gain of a 90° bifacial PV module installed over two different orientations East–West (E–W) and North–South (N–S) has been conducted. An overview on the soiling phenomena has been discussed in this manuscript, with a brief discussion regarding the soiling of bifacial PV modules. Soiling has been recorded as one of the most common detrimental factors to module health and energy output. Accumulation of dust in conjugation with various environmental adversities over the surface of PV modules causes soiling phenomenon, thereby generating shading scenarios and leading to reduced irradiance available to the module.