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Power system oscillations are inherent phenomena of power system. Inadequate damping can cause sustained power oscillation in the network. These oscillations can be reducing using supplementary control of existing flexible AC transmission devices. This controller, if robustly tuned, can provide sufficient damping on a wide range of operating conditions. Moreover, with the recent development in wide...
Helicopter sling-load operations are extremely useful, but they can also be dangerous. Excessive swinging of the load can degrade control, cause the payload to collide with obstacles, or allow the suspension cable to get tangled with objects. Suppressing load swing could increase safety and productivity. Input shaping is a control technique that has been used to suppress vibration of flexible machines,...
In this paper, a robust strategy utilized the sliding model-following control scheme is proposed for controlling the semi-active suspension system. Based upon a two-degree of freedom magneto-rheological (MR) quarter-vehicle model, in view of variations in the vehicle load, a modified skyhook-based reference model is used to force the tracking error dynamics between the reference model and the plant...
This paper is concerned with the design and simulation of a pulse width modulation (PWM) rectifier for three-phase Permanent Magnetic motor drive. Based on the mathematical model of PWM rectifier, the dual-close-loop engineering design with decoupled feed-forward control is applied in the 3-phase voltage source rectifier. The objective to be reached is to realize unity power factor at the input ac...
This paper presents a new procedure for the design of controllers to damp electromechanical oscillations in power systems. The new procedure is derived from a previously developed methodology, which can simultaneously satisfy a number of practical requirements for this type of controller, such as robustness, decentralization, zero steady-state gain and output feedback structure. However, the original...
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