This paper presents a theoretical and experimental study on controller design for the AMBs in small-scale flywheel energy storage system, where main goals are to achieve low consumption improved rotordynamic stability. A H-infinity optimal control synthesis procedure is defined permanent-magnet-biased AMB-rotor system with 4 degrees of freedom. Through choice weighting functions, notch filter c...

The most difficult aspect of optimizing a wind farm is creating an accurate model, especially if the connected to grid. inconsistency and unpredictability speeds exacerbates this issue. When dealing with farms, it possible that reactive power addition capabilities individual turbines are insufficient meet network requirements. This due cable losses line between PCC. study employs doubly fed ind...

Series-compensated transmission lines can lead to a sub-synchronous resonance (SSR) phenomenon at high compensation levels, where the system lacks stability. Gate-controlled series capacitor (GCSC) is widely used damp SSR. Here, an effective and new methodology for damping SSR presented. The proposed method aims alleviate based on estimating both frequency maximum value of voltage magnitude sig...

Abstract Rotating machinery supported on journal bearings is affected by forces due to rotating unbalance and pressure gradients in the oil film. The interaction of these can evoke nonlinear behaviour, including asynchronous motion even chaos. This work attempts characterise sub-synchronous rigid rotor cylindrical abovementioned interaction. analysis focuses behaviour at speeds lower than thres...

Abstract Electro-mechanical flight control actuators have become a viable option as replacement for conventional hydraulic in future more electric aircraft. A rotor angle measurement is generally required field-oriented of the electrical machine and usually obtained from safety-critical resolver. It contributes, however, to rising local hardware complexity with negative impact on space allocati...

Recently, Inner permanent magnet (IPM) synchronous machines have been introduced as a possible traction motor in hybrid electric vehicle (HEV) and traction applications due to their unique merits. In order to achieve maximum torque per ampere (MTPA), optimization of the motor geometry parameters is necessary. This paper Presents a design method to achieve minimum volume, MTPA and minimum ...

This paper describes the application of static var compensators, (SVC) on an electrical distribution network containing two large synchronous motors, one of which is excited via a three-phase thyristor bridge rectifier. The second machine is excited via a diode bridge rectifier. Based on linear optimization control (LOC), the measurable feedback signals are applied to the control system loops o...