We developed an accurate, efficient and flexible modeling method for the steady-state and transient analysis of grid-connected superconducting synchronous machines. On the one hand, the machine flux linkages and electromagnetic torque as function of operational parameters are obtained from static finite element analysis and stored in lookup tables. On the other hand, the machine is represented ...

Lateral tower vibrations of offshore wind turbines are normally lightly damped, and large amplitude vibrations induced by wind and wave loads in this direction may significantly shorten the fatigue life of the tower. This paper proposes the modeling and control of lateral tower vibrations in offshore wind turbines using active generator torque. To implement the active control algorithm, both th...

Convex combinations are used to express a point in a set as a weighted sum of the extreme points of this set. Therefore, convex combinations are used in many different applications, including control. When controlling linear parameter varying systems which are affected by disturbances, there exist robust control algorithms [1] which use convex combinations to interpolate between extreme control...

Analysis of self-excited induction generator reveals that these machines are not capable to maintain the terminal voltage and frequency in the absence of expensive controllers. A simple way to control the voltage is through series compensation whereas frequency control is possible through operating speed. In this paper Genetic Algorithm has been used to model the control strategy for proper rea...

This paper determines and compares the cost of energy (COE) of various hybrid systems for several off-grid facilities in North and Far North regions of Cameroon by integrating renewable sources and/or storage with diesel generators. The estimated annual energy production by solar PV systems and wind turbines is also discussed. The aim is to study the application of a high penetration renewable ...

The paper explores the influence of large offshore wind farms on the performance of the system to which they are connected. To meet the emerging requirements of the power system with regard to voltage and frequency, controllers with extended features have been used that enable the control of the terminal voltage and the participation of large wind farms on system frequency control. The models o...

This paper shows that we can improve the performance of the auto-adjustable electric machines if a fractional dynamic is considered in the algorithm of the controlling order. This structure is particularly interested in the separate control of active and reactive power of the double-fed induction generator (DFIG) of wind power conversion chain. Fractional regulators are used in the regulation o...

Wind energy is now firmly established as a mature technology for electricity generation. There are different types of generators that can be used for wind energy generation, among which Slip ring Induction generator proves to be more advantageous. To analyse application of Slip ring Induction generator for wind power generation, an experimental model is developed and results

A new maximum power extraction (MPE) controller for variable speed permanent magnet synchronous generator (PMSG) wind energy conversion systems (WECS) is proposed. The proposed controller generates optimum speed reference signal for the speed control loop of the vector controlled machine side converter control system without requiring the knowledge of wind speed using only active power and air ...

Offshore wind energy is an important part of clean energy, and the adoption to generate electricity will contribute implementation carbon peaking neutrality goals. The combination fractional frequency transmission system (FFTS) direct-drive turbine generator be beneficial development offshore power industry. use in FFTS electrical but it also lead increase volume weight generator, which unfavor...