Variations of marine current speed can lead to strong fluctuations in the power extracted by a marine current turbine (MCT). During short-time period, swell effect is the main cause for the current speed variations. Conventional tip speed ratio Maximum Power Point Tracking (MPPT) algorithm will require the MCT to accelerate or to decelerate frequently under swell effect, which can cause severe ...

The common palm civets (Paradoxurus hermaphroditus) belong to the family (Viverridae), carnivores order (Carnivora). This animal is widely distributed in South and Southeast Asia. Currently, are raised quite popular Vietnam. delay breeding for first time slow rut has reduced economic efficiency civet farming. study was carried out evaluate effectiveness of different doses hormones (PMSG, HCG) o...

Permanent magnet synchronous generators (PMSG) have a huge potential for direct-drive wind power applications. Therefore, optimal design of these generators is necessary to maximize their efficiency and to reduce their manufacturing cost and total volume. In this paper, an optimal design of a six-phase 3.5 KW direct-drive PMSG to generate electricity for domestic needs is performed. The aim of ...

The recently stipulated grid codes require wind generators to re-initiate normal power production after voltage sag. This paper presents a comparative performance of two commonly employed variable speed turbines in today’s electricity market, the doubly fed induction generator (DFIG) and permanent magnet synchronous (PMSG) turbines. evaluation both was performed for weak, strong grids, consider...

Small Permanent Magnet Synchronous Generators (PMSGs) are widely used in small rooftop wind turbines. In order to inject the electric power generated by PMSG, into grid, a back-to-back AC/DC/AC converter is required. this paper, low cost with high efficiency proposed for rectifier stage obtain maximum per ampere of PMSG. This structure based on Discontinuous Conduction Mode Single-Ended Primary...

Frequency regulation is a critical issue in the islanded microgrids, especially integration of high penetration wind power generator. In order to provide inertial and primary frequency support system, this article proposes an equivalent rotor speed compensation control scheme PMSG for microgrids. A new variable combining pitch angle defined as speed. The versus de-loaded curve designed preserve...

This paper aims to implement a new contribution for sliding mode control (SMC) of permanent magnet synchronous generator (PMSG) wind systems conversion with track the maximum power point tracking (MPPT) power. The SMC is very popular approach due its robustness in dealing non-linear electrical systems. In this work, application by using non lineare model PMSG. objective work stator active and r...

Abstract In this paper, the performance of a permanent magnet synchronous generator (PMSG)-based wind energy conversion system (WECS) supplied to an uncontrolled rectifier-fed boost converter (BC) interfaced with three-phase T-type three-level inverter (TLI) has been analysed. The proposed WECS involves three converters, namely rectifier that is used for from AC DC; BC by PMSG-fed enhance volta...

In this paper, a predictive control of Wind Energy generation system for a Stand-Alone application is presented. The proposed scheme is implied using a wind driven Permanent Magnet Synchronous Generator (PMSG) connected to an Indirect Matrix Converter (IMC). The IMC is controlled using Space Vector Pulse Width Modulation (SVPWM) technique. The IMC consisting of bi-directional rectifier connecte...

The Current Source Converter (CSC) technology is well suited for high power wind energy applications. Because it drives generally features like simple converter structure, smooth power injection at the grid side and excellent short circuit protection. The main drawback lays its dynamic torque response. An improved Direct Torque Control (DTC) method is proposed in this paper to overcome this dra...