This paper proposes an improved direct active and reactive power control (DPC) strategy for a grid-connected doubly fed induction generator (DFIG) based wind-turbine system under unbalanced grid voltage condition. The method produces required rotor voltage references based on the sliding mode control (SMC) approach in stationary reference frame, without the requirement of synchronous coordinate...

in this paper, a novel control method for photovoltaic converter connection to the national gridis presented, so in addition to the injection control by solar arrays to the grid, this method cancompensate reactive power and harmonics in the load current. the system will be connected inparallel between the grid and load. the proposed system supplies all load power consumption(including active po...

Today, often ankle’s active prosthesis is used for transtibial amputated people’s walking, because these prostheses have some advantages such as increasing power and decreasing metabolism. In most of active prosthesis in order to create a movement or increase the force at the push-off, electrical actuators are used like a motor. In cases where a higher-power motor is necessary, the capacity, we...

The expressiveness and complexity of several active database prototypes are formally studied. First, a generic framework for the spec-iication of active databases is developed. This factors out the common aspects of the prototypes considered, and allows studying various active database features independently of any speciic prototype. Furthermore, each of the prototypes can be speciied by specia...

This paper presents a robust control scheme for distributed generations (DGs) in islanded mode operation of a microgrid (MG). In this strategy, assuming a dynamic slack bus with constant voltage magnitude and phase angle, nonlinear equations of the MG are solved in the slack-voltage-oriented synchronous reference frame, and the instantaneous active and reactive power reference for the slack bus...

A dual-loop current control is discussed for LCL -type shunt active power filters (APFs), where inverter-side feedback and point of common coupling (PCC) voltage feedforward both provide damping (AD) effects resonance. However, two ADs are equivalently applied to different elements filter with ...

Abstract The Power Drive Unit (PDU) is the power source of aircraft high-lift system (HLS), which converts hydraulic or electric energy into mechanical for output, and deflects flap/slat through transmission lines to increase wing area improve lift. Two sets motor subsystems working simultaneously are used in Active-Active PDU traditional reliability system. In this paper, an Hydroelectric Hybr...